Arduino multiple outputs I don't even know what you are trying to test. Does anyone have any example code I could try? Or even just This really only comes into play when you need multiple pins to switch within a few hundred nanoseconds timespan. I am using an Arduino UNO. Unlike PWM, on the ATMega328p used in the Uno, you can only get one frequency per timer (you can get two PWM outputs per timer - both at the same frequency). But i am not sure if the Mega can handle all that data at once. page: 305. The Arduino uses shift registers (probably more than one) to drive multiple outputs from a single pin. It is the safest to use only two simultaneous tones (or five on a Hello everyone, I'm new to arduino and electronics (though, have read some theory about some components). ashabbi00 November 21, 2016, 12:42am 1. It is the safest to use only two simultaneous tones (or five on a hi everyone, I'm design my own PCB around the ATSAMD51J19 microcontroller, my requirement is to have 6x independent outputs that could generate 6x square wave (no need for pulses != 50%) with different frequencies, with a range that could go from around 30Hz to about 5KHz. 10 11 This sketch will reliably read any number of button switches by polling each of 12 them in turn. (I know I named it two speakers, but I guess when you know how to build two, the third one should not be that hard, right?) I tried it with an if statement, that the speakers have the same statements, but it will first run the first one, I am using an arduino uno to make a decently large project (for me, anyways). Because of this i am planning to use multiplexer circuit question: 1)Is above circuit is write to build multiplexing circuit?? 2)How Multiple analog This is my very first project, and I chose a Mega2560. you should simply write code to compute the state necessary for each led based on the truth table and write out that state to the specific digital pin only once; you would not need so many if/else conditions and so many calls to In this tutorial you will learn how to use the 74HC595 Shift Register to expand the number of outputs of your Arduino. ezButton features: Uses the internal pull-up resistor to avoid the floating value Supports debounce to What kind of code would be best for multi-channel PWM? This is for a 2ms pulse, technically 40% duty cycle at 200Hz (5ms period) - I only care that the pulses are 2. Signal to one isolator Hi all, Im trying to make some kind of simple portable karaoke machine. The LED of hi I want to print several variables which all of them are double , in same line. So here's the deal, I'm software coder getting into hardware. I would like to have a master chip and some number of slave chips that all receive commands using a bus (I would like to have 1 master-controlled clock line, 1 mosi, and 1 miso, though I'm not using SPI). I looked it up and it seems the best way to do this is use digital potentiometers to 'fool' the circuit board with digital input instead of manual input. I am working on a project for work right now, that will be used to test these new cables that we are manufacturing. It reads Hello All!!! I've been playing with this code for some time and still have not found a way to manage to get 1 input to control multiple outputs based on StateChange of the button. Arduino Forum Aurdino inputs and outputs. actually if I have a, b and c as variables what I want to show is a b c edit: if I use Serial. I think the loss is all yours. I am wanting to use 4 inputs to create a singular output. Hello! First post, so here we go: I've been working on this project where I need to randomize the output of three different RGB leds. At least, Dear All, I just created this free library that allows you to have 16 inputs and/or outputs with 3 I/O pins and a few extra cheap chips. 10M between send pin and receive pin * Instead of using expansion boards, you could use an Arduino Mega or an Arduino Due instead. Because of this i am planning to use multiplexer circuit question: 1)Is above circuit is write to build multiplexing circuit?? 2)How Multiple analog Ok, I'm a noob so I hope I am asking the right question. These have more than enough GPIO pins for 20 inputs and 20 outputs. Such nodes should be given a Hi! i would like to know how i can use the arduino to send output signals through multiple ports on the microcontroller. how to control multiple outputs from single input? i. After instantiating each PWM instance, I using the function setPWM_manual ( ) to change the duty The pins on the Arduino can be configured as either inputs or outputs. This document explains the functioning I'm attempting to use the multiplexer setup in this article with my Arduino Uno to control the output of LED's, as a way to fully understand the principles of multiplexing. Hello everyone, I've written some code to control 8 LED's via serial commands. A button will trigger an LED to illuminate, another light to come on and a solenoid to fire. I need to set multiple output pins at exactly the same time. print(first) to print the first value, and then Serial. Yes but you will have learnt nothing then did you. I ask because I've Ok so I have always been upset when I have to use 12+ lines to set the pin modes to the pins. Basically, the code randomizes three variables, runs each one through it's own switch/case, then outputs the desired result. This loops continuously. Now the same author have made a tutorial for an audio input for the arduino (offsetting the signal so there is no negative signal going into the arduino) Now in this tutorial it says that you need 2 9-volt batteries in series (the middle to ground) to generate the Dear all, I have hall sensor that can measure current upto 25 A . I already have it running using a breadboard to distribute the 12v source between all of the outputs. What do you think connecting two outputs together is going to do? In general, never EVER connect two digital outputs directly together. They act like solenoids that need 50hz pulses to drive them. The pins on the Arduino can be configured as either inputs or outputs. My end goal is to control up to 4 mcp23017 just by calling a channel number from 0 to 32+ #include <Wire. That means you're needing a lot of driver circuits. 3 & I want to do the following: -have 2 separate inputs, on analog input pins 2 & 3 -have 2 separate PWM outputs, on digital pins 5 & 6 The sensors are hooked up to the arduino, and output pins of the arduino are connected to the raspberry pi. how can I make multiple statements to setup pins as outputs for instance without having to declare each pin and set it as output on separate lines? belphit. I put it into a function so I could call it with different axis in (Can the Arduino handle all of them at the same time?) -Will this method be possible if I need to supply a constant Voltage/Current to multiple ICs? Thanks! Arduino Forum Multiple PWM Outputs Question. I need to hook more than one sensor to a So it there any problem with hooking up these two buck converters this way and then Would there be any need for splitting the current needs evenly between the three outputs or would that not make a Power supply issue. SO i'll chip in anyway! In general it is possible to control and measure more than one input and output at the same time by the use of millis(). So my arduino input pins will be hi or low when jogging depending on configuration, not variable like an analog joystick. The first digital output is setup to switch on at a certain value, lets call it 60% and to switch off at 20%. I wants to read 10 Inputs, if any one goes High Output status needs to change. Add a loop timer -- Step 2 ; Rewriting the Blink Example as a task as you add more tasks/functions to your sketch, you will quickly find things don't work as expected. The current of all relays together is 1A at 5V DC. Have you considered using max7219 chip to drive your leds? Each chip can drive up to 64 leds and needs only 3 Arduino pins. So you can control six PWM pins using an Atmega328 for PWM output using analogWrite() at the same time, controlled by hardware. I was expecting them Hi All, I am trying to do a project where i have multiple micro-controllers. mclaren12c September 6, 2015, 5:52pm 1. Actually I am trying to drive two pins but both controlled by two timers. I'm currently working on a small project to sense multiple magnets and turn on LED's based on their presence. Each micro controller (Teensy with arduino) collect data from multiple sensors (analog to digital conversion). HOWEVER the moment I connect two inputs, one of them ceases to read. Two digital "device select" outputs (DS0, DS1) from Arduino, connected to the 74HC125D "G" inputs #1&#2 and #3&#4, respectively, that let me I am attempting to retrofit a control panel which currently uses mpg wheel encoders to a joystick with momentary NO switches . Shift registers are chips which use logic gates to control many inputs or outputs at once. You may be able to wire the 4N35s in series (one Arduino digital output to drive them all). But deffinitly need some pointers because i cannot seem to get the order right. I think what I'll start with will be playing around with them, later maybe buying some more stuff. Can I see a full example of all Digital pins of the UNO getting Interrupted and Arduino Serial. I would love them to run concurrently but it didn't work as planned when I upload the code on the Using an Arduino and multiplexer for writing to multiple outputs. ) But, it's generally OK to connect inputs together. I will only need access to one of these input/outputs at the If you connect the output pins of two or more Arduinos together that is a great way to burn them out. That would use two pins. 16: 2504: May 5, 2021 Using 2 or more Arduino to double pwm. I am trying to build a program that will allow me to use one momentary switch to toggle between two different controls. My issue is, I'm getting multiple outputs from a once-a-second read of the gps. Hi, I have an Arduino hooked up to a few various things through some transistors. This is just an I wants to develop similar program of Digital input Pullup Serial. 25: Hello I'm working on project with two inputs and four outputs. Exact same for multiple headphone outputs BUT use 50 Ohm pots. (That's what your mixer is for. 1 /* 2 Ron D Bentley, Stafford, UK 3 Feb 2021 4 5 Reading Multiple Button Switches, using simple polling 6 ''''' 7 8 This example and code is in the public domain and may be used without restriction and 9 without warranty. But all of the Frequencies have to be synchronous ( Its okay if they differ in ns, but not much) my actual code does produce 1 frequence on 5 outputs, but I cant do the tricks do do different frequencies on each PWM-Channel. Alternatively feed the interrupt outputs into separate arduino outputs and have a hardware OR gate combine the two and have the output into the interrupt pin. That obviously doesn't work since the echo I don't even know what you are trying to test. Is there a solution?? I put my Good evening, I am hoping to get a clear answer on this as I have read many posts but haven't come to a conclusion yet. Bottom line is, I'm going to need way more than 14 inputs. The pin 6 will control relief valve. This document explains the functioning of the pins in those modes. 16 hours after Arduino is powered on: Light turns off for 8 hours. In this case, we can use an external integrated circuit (also called a "chip") to expand the Arduino's inputs and outputs. cc Arduino Reference - Arduino Reference I have Arduino 1:8:3 with a DS3231 RTC and I am looking for help with how to use the output time from the RTC to turn on & off a number of relays. The idea from what i am looking for is something shown in the Hi, thanks in advance for any assistance in this matter. So far I haven't found many other projects or resources that have been very helpful. I woul like to cummulatively collect the information of individual micro controllers and transmit them via a single serial or wifi port. My project is a train layout controller and will be taking inputs from a human and switching outputs on the train layout - pretty simple. This thread will be ongoing. First I wanted to ask how many shields you can actually have on an arduino board? The reason I ask, its because Im starting a project, and I need to control two different motors, one stepper motor and one servo motor. Basically I am controlling a night light, a fan with external thermostat and a relay to override the thermostat. And I've got the output working (from Instructables). Hi all, One (These two, together with the number of analog outputs are different from all the other boards). with analog output 0~5v. I am trying to interface with a joystick on an existing Wheelchair driver. Two digital "device select" outputs (DS0, DS1) from Arduino, connected to the 74HC125D "G" inputs #1&#2 and #3&#4, respectively, that let me Hello all, I'm new to arduino and learning some of the basics. Hi again, I was using Sparkfun PIR motion sensors with open collector output. I'm planning to use motors similar in The general rule is - NEVER connect OUTPUTS together. Can anyone help me with the sketch please. Recently I bough couple of these eBay PIR motion sensors with TTL output. I'm looking for the same command in Arduino. One function reads the current RPM ad adjusts a throttle servo accordingly (powering a small gas engine), the other reads the temperature at (much longer) intervals and Hello guys Am new in arduino and i would need your help if possible please. The problem is, there are 2 different types of I'm breaking up some messy code into separate functions, and can't seem to figure out how to pass two parameters into a function, and get two back. Here's the code, which reads and outputs to 16 buttons and LEDs using only 5 pins! The only vanilla Arduino with that many Outputs is the Mega. Additionally you can perhaps use one or two pins for output of "software PWM". Ask Question Asked 7 years, 9 months ago. So I was thinking of using four PIRs to control four of the props via relays. I also think that his code is not what you asked for. In english what I'm trying to achieve 1st Press (LED1 == HIGH) 2nd Press (LED1 and LED2 == HIGH) 3rd Press or 5000 milliseconds (LED1 and LED2 == LOW) (back to start) - Was also Hi all Just a quick one. The telephone is (in our Basically, there is a nested for loop (with 3 for loops) that computes all 16 million possible combinations; the function RGB (which should be renamed to RGB_strength -i. What you need is to use the Arduino pins to simulate an open drain output. – Can anyone tell me a little more about how fastled works with Arduino architecture? As a demo I have 2 sets of LEDs and I want them to both light at the same time (not what I really want, but just to highlight the issue). Does anyone has any other ideas? Show YOUR code. I have 3 axis , all 3 which need to be able to produce different quadrature encoder outputs (A/B, per axis) simultaneously I am into a project which includes processing inputs (digital) from 3 sensors simultaneously. All outputs go to the top of the pot, all bottoms of pot are connected together, use separate 10uF capacitors back to the lineout common of each device. Heating Pad/Mister still on via the relay's contacts NC connections. Inputs are missed, outputs are slow to operate and when you add debugging print statements everything just gets worse. e by pressing a button the previous output turns off and second output turns on and so on. This may be answered elsewhere or may not be possible which is why I can't find a quick answer but can the Arduino Uno handle multiple digital outputs at the same time? I'm designing a polysynth with multiple speakers and only one pin can handle the output at one time using the tone command. print("\t") to add a tab character for formatting, followed by Hi, can the arduino mega output on one of two pins based on if the answer is positive or negative? The input pins are connected to an ISR so I think digital or analogWrite would be of no use since they are too slow. There shall be 4 input variants, first two is pretty simple: IF input A = high AND B =low then Out 1 = high IF input A = low AND B = high then Out 2 = high this I do understand how to make, however the second part I have absolutely no clue: I need to check which input was high first, e. Can anyone explain the reason for this, or how I can go about fixing it? Hallo I am a new arduino user and I need somehelp with my project I wrote a sketch, but it does not work properly. These are mosfets someone taught me how to use and I have always used them for many applications. I'm currently using a Uno to prototype what I want to do, and will Arduino Code - Blink Multiple LEDs. I want 4 leds to turn on when the water Hi, I want to connect multiple ultra sonic sensors using as few pins as possible on the arduino. There will be 4 layers with 26 buttons each and when switching between layers the displays shall indicate a text for the actual function for each An Arduino UNO (Atmega328) has 3 hardware timers and using the Arduino core library each timer controls two PWM pins. Also you will only need one resistor to set the led current for all leds, instead of one resistor per Hi all, I'm still really new to this ardino malarkey, I've spent a bit of time getting to grips with some of the basics. I got the dimmer tutorial to work fine haha. I am using Arduino mega Board for programming. So i can test 24 wires at one time and switch the relays, which are changeover, so I can test 48 wires. e. I need to pilot 9 different DACs (MCP4725) because I have to feed 9 different varactors with 9 different voltages at the same time. I also used to do alot of work with Maxuino but I do not own Max 5 and since the arrival of UNO its all gone to hell. The inputs will be NO, non-latching push YES! It is possible. Syntax & Programs. Thanks for help void setup() { // initialize serial communication at 9600 bits per Right now I'm using an HC-SR04 sensor for my project. Yes, but don't underestimate how much easier this could make your wiring. Im looking to build a control box for my sim racing setup. I want to connect several 10A outputs to my Arduino UNO and may exceed 20 outputs. single LED or lin or log level display, and true/reversed patterns Hello! First post, so here we go: I've been working on this project where I need to randomize the output of three different RGB leds. If I comment out PA09, the LED I have an Arduino Uno and a Mega. Programming Questions. I'm using far too much memory as it is, so I think it is time to implement this into my code. So my program is like digitalWrite(2,HIGH); analogWrite(3,20); something like that. Hey guys, This is my first attempt at using the arduino board (UNO). Hi, Just wondering if the Arduino Mega (or another suitable Arduino) Independent PWM outputs with variable frequency (Arduino MEGA) Programming Questions. I used the tutorial for the button hook up and just doubled it for the second switch. but not working. print("Filter Value is:"); Hello all, I am a newbie this is only my 3rd sketch. Often it's better to give them their own routes to the power supply, and only share a common ground with the Arduino. For many cases this is a To use it, you need 3 pins connected to the Arduino. I want to drive some optical couplers to try to parallel the joystick signals. Hi, I wanted to Pinmode on multiple pins. I have no good idea, Unlike PWM, on the ATMega328p used in the Uno, you can only get one frequency per timer (you can get two PWM outputs per timer - both at the same frequency). Hi All, I've been working on a project of building a thrust vectoring gimbal system on and off for a while and think I'm nearing a point where things are working, A brief outline on whats going on. Three of the conditions are the fault conditions and one is Good condition. For the buzzer, it will stop buzzing after approx 5 seconds. I am trying to drive two vibratory pumps. I can find many scripts outputting time to a LCD display but am unable, so far, to find a sketch which will allow me to use the time to turn on and off the relays. Playing three simultaneous notes on a standard Arduino board, or more than six on a Mega, is possible, but millis and delay will no longer work properly. Unlike the other ones, it has only USB C outputs. If power is supplied from a singled low voltage PSU to all 8 Arduinos, they will already have a common ground, but if the Arduinos are independently powered, e. I am having an issue when using certain PWM pins at the same time but with different output values. h> #include I am able to read and parse my gps data. In practice the ping 7,8,9,10 will control hydraulic directional solenoid valve. These devices operate with the I2C interface so you need only two lines from the Arduino to drive up to 8 of these What you need to easily control multiple LEDs are demultiplexers, or use of multiplexers in reverse. I have a big problem. Hello Everyone, I am in need of help. Hello, In my project I have to generate 5 different frequencies with a duty Cycle of 50%. If I analogWrite PA05 to 255 and analogWrite PA09 to 0 both LEDs will flash. 10 minutes after Arduino is powered on: Water Pump turns off for 1 hour. hi I want to print several variables which all of them are double , in same line. Here's a simple version: Imagine you have a telephone. " adafruit_support_bill, now that the title of my post is adjusted, can you confirm that I can run multiple pins as outputs simultaneously to control multiple strips? In practice, am using 8 outputs, and I am driving 4 ~ 5 v, 0. println(a,b,c) it does not show the correct result Hello, I want to expant the number of outputs from a single dac to 16 analog voltages using a CD74HC4067 board and holding capactiors going to a op amp buffer. The active range will then be between 20% and 60%. For a single button to work, all 8 Arduinos would have to share a common ground. I would like to use it as sort of a reset for a Hi guys. I am trying to control multiple digital outputs from Max/MSP. Motors, Mechanics, Power and CNC. Hello, I am working on a project with a SAMD21G18 that uses multiple pwm pins. Arduinos are typically too slow to provide data with the first transmission. I realize this would be an OR condition, but I could not get the syntax figured out. Each LED is driven by a PWM instance (defined in the library). I check for an active input and then turn on an LED that stays on for a certain amount of time. You send one bit to the chip from the Arduino for each output, then when you have them all set, you toggle the Latch pin - Learn the different methods of extending the number of IO lines on an Arduino using decoders and shift registers. others left alone PORTD = PORTD & 0b11000111; // clear bits 5,4,3. Thanks in advance!!! I'd like to control multiple Inputs and outputs, like a Parking lot. To blink multiple LEDs simultaneously, we can't rely on the delay function. My small project that am building has three inputs pins and one relay pin as output, The three inputs which go HIGH (5V) two at the time and one remain low (0 V). Later, I intend to use analog inputs and send them to puredata A very well explained example should use serial-output that shows the fast execution of the loop and the "delayed" execution of parts of the code that shall be delayed. I have purchased an arduino yun board and a seeedstudio motor shield. I was wondering since the UNO has multiple inputs and outputs, can I control multiple items? I have some Halloween props that have the "Try Me" buttons on them. But i want something more permanent. I don't need them to change direction, just control the time and speed at which they rotate (though they don't need to accelerate/decelerate) . I know that exists a lot of thing like shift register, or special board like Mux board ecc. I thought I could do this by using the digital pins of my Arduino Uno board, but then I realized that I have to connect the DACs to the Analog pins (A4 and A5). Sometimes, in many electrical and embedded systems projects, there is a need to connect and operate more sensors or other output devices to the Arduino. I'd like to know if there is a special device tha commmunicate with Arduino ( maybe in a special coomunication I'm currently developing the hardware (and later software) for a system to use in a vehicle for controlling the basic functions, various lights, horn, compressor, those kinds of things. println(c) it shows : a b c Hi, This is my first post on this forum as I am new to this whole Arduino universe. Goodmorning everyone. So far I this is the exact effect but with 8 different buttons. At the same time, I'd like to keep the analogWrite available. Likewise, if you have a 4067 16 port multiplexor you can obtain 32 inputs or outputs, or a mix of the two. I'm relatively new to Arduinos so I'm still learning the ways around them. I have got hold of a Arduino uno r3 dev board, and i'am wanting to make 1 button input to switch 4 different outputs high, and display on a JM164A 16x4 lcd (line1=mic1,line2=mic2,line3=line1,line4=line2) each button press selects the next output in a loop. Switching multiple digital outputs. If I use a switchcase statement on a variable called "test"; switch (test){ case 1: //do thing 1 break; case 2: //do thing 2 break; case 3: //do thing 2 break; } as you'll see the result of test being either 2 or 3 results in the same action. But if you insist of you method, the right way is : pinMode( led1, OUTPUT); pinMode( led2, OUTPUT); pinMode( led3, OUTPUT); digitalWrite(led1, HIGH); digitalWrite( Instead of DigitalWrite() you use C to write directly to the I/O port registers in the Arduino. 2A on each output ( I am not actually using LEDs ) Currently the drop voltage on 8 diodes ( 1N4148 ? ) is enough no to turn a LED on. h> /* * CapitiveSense Library Demo Sketch * Paul Badger 2008 * Uses a high value resistor e. This code works but would like to now if there is a more efficient way to controlling more than one mcp23017 at once. A There are two ways you can get more pins out of an arduino. 🙂 Next up is configuring and optimizing the output stages. I would be surprised if there were a ready-made board to do so with Arduino which implies a pretty high level of electronic board and software design as well as a substantial time effort to tackle this project. All you need to do is refer to A0-A5 as pins 14,15,16,17,18,19. For beginners, managing timestamps while blinking multiple LEDs can It says "Controlling Multiple Neopixel Strips with Multiple Mega 2560s. I'm getting this (watch the seconds): latitude: 39. 6-Arduino Uno-Arduino Mega. I am using an MPU9250 to gather IMU data and feeding this through a function I created to calculate the PID output. " It should have said "Controlling Multiple Neopixel Strips with a Single Mega 2560. I want somthing somthing that looks like this: I'm working with the ESP32_fastPWM library on an ESP32 DEVKIT V1 DOIT module. I put it into a function so I could call it with different axis in We are trying to send 8 signals but since the Arduino Due DAC only has two pins (DAC0 and DAC1), we are having trouble as to how we can implement this idea in code. and a third led high when neither switch is pressed. I have a question about controlling multiple mcp23017 as outputs. println(a,b,c) it does not show the correct result I have a schematic and code that work brilliantly, where the arduino reads an analog input(a sound sensor), uses Damien Clarke's ResponsiveAnalogRead library, and outputs analogWrite PWM values to an LED output. millis() is an arduino function that returns the number of milliseconds since the arduino fired up. The sensors are 3 Hall effect sensors (A1104) (which have one digital output pin each), and the display i am using is . I need to refresh the data on ALL ports at least 30-40 times a second. I changed the code from For few outputs ROM chips have been used, which map the address bits into many (4-8) outputs, with arbitrary output patterns. Any guidance would be appreciated. If the only issue is having multiple digitalWrite lines, well it's just not a problem. So I figured, why not use a computer program to process and filter the Arduino Forum Defining Multiple Pins At Once. I need to know how to make one input drive two outputs, using a PWM output. The project (simplified) has the ESP32 driving 10 LEDs at 1000 Hz where each has its own duty cycle (brightness). For example: If Sensor 1,2,3,4 are showing within certain levels then the green LED is on If Sensor 1,2 are good but 3,4 are bad But in the Arduino Cookbook, it says I can play up to 3 tones in Arduino UNO and up to 6 six tones in Arduino Mega. Did you connect the inputs to something? If not, they are floating and can reading them can result in anything. Is there a way to enter multiple outputs for a single case, eg case 1,2: or similar? Hello all, I'm still very new to the Arduino. The difference is about twenty-something Hz. Three random variables, So what i am wondering is how do i make it so two different requirements have to be met before the code on the inside of the if statement is run. Ideally, I would have a sensor with a Dear all, I have hall sensor that can measure current upto 25 A . An example sketch would be: Hi. In the beginning i thought about using the Portenta for its power since i wanna fetch all the data over the network but Pin wise, the Portenta sucks a Ok then. ? The below sample program working fine for one digital input, tried to edit for muktiple inputs read. The 74HC595 is an 8 pin shift register. Excuse the code, I'm keeping it as basic to me as I can until I understand everything better. I've been looking online, and am a bit confused about which would be the most suitable products to use to control and power them. Hi there and apologies if this is on the wrong forum. println(output); SerialBTooth. This is because using delay blocks other code execution, preventing us from blinking multiple LEDs at the same time. Can you help me how to di this? I quite like rachet freaks's idea, however whilst making an example for you his answer hadn't been posted. a = floor(num); ab_instance. println(a) Serial. begin(9600). For example, if I type: u,243 it turns on the PWM pin defined as u, at value 243? or: b, ON turns output defined as b, on. my goal is to make a water level/control system for my Christmas tree. What my group wants to do: Then a pole is bent or tilted the arduino will respond by activating 2/ I mean the number of Arduinos is one. /* Input Pullup Serial This example demonstrates the use of pinMode(INPUT_PULLUP). I am using an arduino micro. Or maybe I need to Hey everyone, hope all is well. It seems multiplexing is the only option, but just as a way to test whether this idea would work, we are prototyping to send two signals through a single pin. others left alone. println(c) it shows : a b c and if I use Serial. I have an Arduino 2 board, i need to pilot 1000 or more led, if possible in PWM. Everything in the red and purple areas are inviolate; these are existing circuits Hello Everyone, I am in need of help. if i send a short signal, does this turn the relay on and then it stays on until i send another signal to turn it off? In my project I have Arduino and Raspberry Pi Zero controlling via SPI one RGB LED strip (APA102). I am leaning towards the mega for its plethora of available serial ins and outs but the teensy I have heard is better at handling midi messages. In this case I am trying to modify a reclining hospital bed remote so that the user (who has very limited hand mobility) has to only use one button to operate HEAD Hey guys, Been doing a little research and I'm a little new to the embedded area so I'm not exactly sure what to look for on this. I am working on a project that requires synchronization between two outputs. Because of this i am planning to use multiplexer circuit question: 1)Is above circuit is write to build multiplexing circuit?? 2)How Multiple analog Hi All, I've been working on a project of building a thrust vectoring gimbal system on and off for a while and think I'm nearing a point where things are working, A brief outline on whats going on. I have Hi all, My vehicle flasher project is progressing. My question is, if I have multiple NeoPixel classes open on different ports, how can I update all of them at once to avoid a lag in the display? I have a 14x156 matrix, I want to use 7 or 14 outputs to drive the 156 pixels strips. 9: Hi all, I'm looking to control 7 DC motors using Arduino. 12: 1336: March 28, 2023 About pins declaration need help please. Can any of the 6 variables (not DIRECT) be shared. If possible, I want to control as many digital potentiometers as possible (analog Hi All Im very very green to this and have been having a tough time working something out im using to guide me but im having a tough time writing in multiple buttons. There's lots of Learn how to add more inputs and outputs to your Arduino projects with the bidirectional 16-channel CD74HC4067 multiplexer You can turn on or any of the outputs in any order and pattern you want. They are plugged into different outputs on the board, I'll try and attach a video. Ideally, I would have a sensor with a Or of course just wait until someone @dimulino pops a full answer up in the thread. The first way is by using the Analog pins as digital output pins, which is really easy to do. But I have a doubt about the grounded select pins. It works Keep it simple are words told in many different situations. Hello, I have an array of 10 HC-SR04 ultrasonic sensors which I am using to measure elevation changes of -Arduino MKRZero Music-Teensy 3. So you can control six PWM pins using an Atmega328 for PWM output using analogWrite() at the I am thinking about driving multiple mosfets (STP16NF06) from one output. I want to make a cable tester, I was thinking of usin 3 Multiplexer (8I/O) as Outputs and 3 Multiplexer (8I/O) as Inputs. You would have to use a separate interrupt from each of the chips if you wanted to tell which one had caused it. Here's the download URL: I'm very new to arduino and have been trying to find if it is possible to use one input ( a tilt sensor) that will turn on an led as well as play an audio clip using the Wave Shield on the Arduino Uno. Provide details and share your research! But avoid Asking for help, clarification, or responding to other answers. You do not need diodes to do this. I'm working to modify the Is there a way to create a function in an arduino code with int or void or a boolean array that will output multiple values? Is there a usful example you have. If it is low light and the LASER beam is broken I want the light to come on for 10 mins. With this we can extend the Arduino’s PWM capabilities to more than 16 outputs, for example 32, 48, or 64 PWM outputs and still use the same 4 pins used by the Arduino Board as for controlling one TLC5940 IC. how Discover how digital pins work and how they can be configured. On my control board I have 3 buttons. Each prop runs on about Greetings, I am new to Arduino and have started my first project. Therefore a high output at the arduino will turn hi I want to print several variables which all of them are double , in same line. (I often use every pin available) Now that my Arduino Mega is coming later today, I really want to learn how to (if possible) set multiple pins of the same mode to their modes whithout using multiple lines. splungedude February 3, 2019, 8:07pm 1. basically, i have about five relays, all powered by a seperate power supply, that need to receive signals from the arduino at the same time. I have used multiple motion sensors connected to a single input pin (pulled up to 5V) on Arduino and if any of the motion sensors triggered, the input pin was pulled low. eg on arduino to say Control an Alternator using a PWN output, based on an electrical load detector on an Analog input, Multiple Outputs with Separate Timng. another way. Hello, so I've read from many of the experts on here about the atrocities of using Strings. not for PWM but Connect faders or potentiometers to the inputs of analog multiplexers, and connect the outputs of the multiplexers to analog inputs on the Arduino (A0 and A1 in this case). when I use my sketch, all LEDs will blink white. Please help me finish my project. How Edit : I figured that it can can be done by substring or sscanf but I dont know how to code it This is part from the output in the serial monitor, I got the following data in the serial monitoring as shown in the figure from imu razor sesor which is connected to Arduino Mega 2560 I don't want to display all these data , I only need to display the data that starts with "#A-R= You can't return more than one value from a function in C. I had to put it on hold and forgot all about it. This is my first posting, too. I ask because my program will be running 6 PID's and can get quite large quickly. I've seen on the forums that you should not Hello, so I've read from many of the experts on here about the atrocities of using Strings. What are these pins driving? Hello all. I used the example code and I could get only one button to work (obviously because the code is for only one switch, but at least I know it works). . Never connect outputs together unless they are open collector outputs. Setrik_aZ August 23, 2020, 11:45am 1. So I'm working on building an arduino guitar-pedal. In the Arduino IDE, use Ctrl T or CMD T to format your code then copy the complete sketch. I just ported my MIDI Drum-Machine code so it uses less I/Os, making it compatible with the UNO board. Once this is working, I would like to see if the 4th row could include a countdown timer from 120 seconds for example to zero after the first OR condition is met. Forum 2005-2010 (read only) Software. batteries, then a common ground would need to be wired up. For example, you can connect a few amplifiers to a tape player or mixer. The price isn't much higher compared to the extra expansion board Have you ever wanted to do MULTIPLE timed events with Arduino? What about multiple CONCURRENT timed events? We’re “upping” our game with this lesson, so buckle in and hold on tight!  The millis story so far This is part of a mini-series we’ve been publishing that’s all about using the Arduino millis function to Hi guys- I'd like to set something up, let's say, keyboard style if I have 4 buttons for inputs I'd like to have 4 tones for outputs. I try doing the research but I have a TBI and am just not as quick on the uptake as I used to be. Arduino Forum Multiple statements on one line. 99% of the cases you will come across. Input signal is from the Ping sensor. So, pin 6 has to open and close in loop together with pin 7,8,9,10. Or maybe I need to The fact that you are using LOW as the assertion level is what's causing the seeming reversal of these two ways of looking at it. I've seen on the forums that you should not Hi there, I'm looking at the library, I noticed that the NeoPixel class uses the Mailbox one, then sends the data to the pin. Then I can trigger one and wait for the reply, then the next one and so on. print("Filter Value is:"); Hello everyone, Im new here, Just wanted to say hi and ask a few question. I need to be able to have at least 6 Hi all I'am new to this 😲 I am hoping that someone can help me. In some cases, I would like the Beginners usually run into the following troubles: floating input issue chattering issue detecting the pressed and released events managing timestamp when debouncing for multiple buttons With the ezButton library, the beginners do NOT need to worry above problems. So my question is what is the best way to distribute the 12v between the 4 devices so i can remove the breadboard out Hi Everyone, you have all heard of a Newbie but I am the ultra mega newbie! I am 74 years old and am just trying to learn. I am sorry i am probably re posting this question and not giving much information but well what can i say. At the other hand, the circuit, may be a bit dangerous (and can damage the Arduino or the mux) to use LEDs without a current limiter series resistor (330 - 1K Ohm would be nice values, 1/4 W). The second digital output is setup to switch on at 65% and to switch off also at 20%. Could be a ground output or a positive output. Appreciate any helpful comments or advice Hi there! Totally new to Arduino, 3 weeks old! I am doing a project with 2 inputs (2 x ultrasonic sensors) and 2 outputs (buzzer and send SMS) The code to run the buzzer and sms works perfectly individually. I want to be able to have multiple speakers operating at different If you are trying to connect multiple things, you should first consider if it is appropriate to have their power passing through the Arduino at all. I need it to power 2 fans and 2 sets of led strips. Making statements based on opinion; back them up with references or personal experience. I am trying to use 2 buttons to 2 separate digital inputs (digital 2 and digital 3). Therefore a high output at the arduino will turn In this Arduino code, we define two integer variables, first and second, and assign them values of 100 and 200, respectively. Is there anything I can do to synchronize the two outputs or to minimize the You mean daisy chaining the slaves? That's certainly possible, provided the master knows how many bytes are sent by how many slaves. Many beginners think this is what they want to do but it is seldom what the want. I scoured the forums and didn't find out too Found something that might be of interest to others. If I connect the arduino to it, no power at all is provided! It is NOT the phenomena that a powerbank shuts off because of too little power draw after a couple seconds (that should not be an issue here since over 300 mAh are drawn once the arduino nano has activated multiple mosfets). Arduino Forum Multiple HC-SR04 simultaneous outputs. b = num * pow(10,6) - a * pow(10,6); return ab_instance; } As far as outputs I’m driving relays with them so how ever it needs to be for that. Either return a struct, or pass by reference and modify in the function. This command will allow me to turn on port B outputs 6, 1,2 and have the rest off. @dimulino is a brand new member and hasn't yet got the difference between helping you and doing it for you. The same applies to sensors or other devices with JIT data. I don't know what you think is inelegant. h" #include <SPI. The former has 7 outputs, the latter has 8. Set all pots to 50%. The Arduino has no open collector outputs except on the Ok so I have always been upset when I have to use 12+ lines to set the pin modes to the pins. The issue however is that it gives only a single output value from which to calculate distance. The outputs will need to be amplified via driver circuits before they would be able to power your solenoids. So, I'm trying to code my own "Maxuino" but in a very paired down fashion. should I be using the PORTD = B01000110 command as mentioned in the following link: arduino. Any pointers would help. I want somthing somthing that looks like this: Simple Multi-tasking in Arduino-- Step 2. I have been looking all over the net trying to find I was trying to use two analogRead using arduino due, but one of the readings are always a random number. The passing part is easy - I can just call get_angles(somenumber, somenumber), but how do I make theta1 and theta2 available within the loop() or wherever I call the function? If anyone has insight or a good link to a The best way to deal with (multiple) line out is with 1K pots. Its about using up to 30 TFT displays with an Arduino Due. LEDs are always Greenlight. printing the pin that was changed from LOW to HIGH? Basically, I want to have 2 Arduinos. One line of code can turn on or off all the I/O by writing a single byte to the proper port. This is so short a time as to be considered the same as "at the same time" for 99. Now the same author have made a tutorial for an audio input for the arduino (offsetting the signal so there is no negative signal going into the arduino) Now in this tutorial it says that you need 2 9-volt batteries in series (the middle to ground) to generate the Hey all, I'm working on a project involving getting an arduino to control a tennis ball machine. Instead, we utilize the millis function to manage timestamps effectively. I just read on the tutorials that you can only have 1 tone at a time and you have to stop each one before starting the next and I'm curious what the limitation is, so that I can throw money at it by buying more components, which is my solution I'm using the following code to synchronize three channels and output a pair of complementary outputs per channel. The cables have 5 wires and I plan on using an ATMega328p w/ bootloader to design a kind of cable scan. How to do that. There are four conditions that must be tested. There are totally 30 Hall sensor and where arduino mega has 16 analog channel. 63 l Meaning it seem nearly impossible to use one Arduino for everything. The purpose is a Midi Foot Controller, where each button shall have a display indicating its actual function. Afterward, we set up serial communication using Serial. Hi all, One Ok, I'm a noob so I hope I am asking the right question. However, there are no more output pins available on the Arduino board. So far I've seen things like the Fast digital I/O Library, the Timer2_Counter Library, direct port manipulation (a bit alien to me), etc. Just follow this logic in your setup and loop and you'll be ok. I will only need access to one of these input/outputs at the I'm write a program with multiple PID's and I was just wondering what variables if any can be shared between them? PID PIDname(&Input, &Output, &Setpoint, consKp1, consKi1, consKd1 ,DIRECT). To contol which of the two masters drives the LED strip, I use 74HC125D chip (a set of four 3-state buffers). To get started, gather all the necessary components – an Arduino board, LEDs, resistors, jumper wires, and a breadboard. I am going to create relay circuits using transistors or MOSFETs to drive the relays and use the Arduino to drive the MOSFETS. Neither one is wrong, per say, but yours is closer to how actual logic chips are named. I've managed to get as far as I can with some code, but I cant quite get my head around something. The load impedance drops as you add more devices, so if you connect too many devices you will start to affect the signal. I just went I have hit a wall trying to work out the best way to assign multiple outputs to single inputs using the shift registers in my project. Hi All am new to Arduino but are slowly figuring it out, I am building a gearbox controller to control a gearbox in a offroader competition vehicle, the gear shift is electronic soleniods, the shifter on has 3 outputs/positions, i want to do is have a "stepup" switch, so in 1 position on switch i can get 1,2,3, in second position i will get 2,3,4, I have manged to figure I want to trigger multiple relais over 1 digital Outpu. Also, I plan on using a ton (100?) of LED's, and would like to be able to individually control them. I have an Arduino Uno Rev. I did try using the code by 756E6C, but the reading is still a random number. Example 1: struct struct ab { long a; long b; } struct ab Conv(double num) { struct ab ab_instance; ab_instance. println("Learning Filter ValuePlease Wait"); SerialBTooth. Right now, I'm looking for a way to change this series of lines: SerialBTooth. Can anyone tell me a little more about how fastled works with Arduino architecture? As a demo I have 2 sets of LEDs and I want them to both light at the same time (not what I really want, but just to highlight the issue). In this case I am trying to modify a reclining hospital bed remote so that the user (who has very limited hand mobility) has to only use one button to operate HEAD On the 3rd row, I would like a counter to increment to show how many times ANY of the outputs have been active. The first tank I want as follows: I want 5 leds to turn on when the water is full. Daisy chaining is a great feature which means that we can connect multiple TLC5970 ICs together in series. Some options: Return I'm trying to do something like this: uint8_t values[4]; values[0] = width; // these are values[1] = height; // already defined values[2] = max_chars; // elsewhere in I'll show you the long but simple way. It will consist of two tanks one with 5 leds that show the water level and tell when to turn the refill pump on. I have a few questions (couldn't find Thanks for contributing an answer to Arduino Stack Exchange! Please be sure to answer the question. No one of these solution can solve my problem. Edit : I figured that it can can be done by substring or sscanf but I dont know how to code it This is part from the output in the serial monitor, I got the following data in the serial monitoring as shown in the figure from imu razor sesor which is connected to Arduino Mega 2560 I don't want to display all these data , I only need to display the data that starts with "#A-R= But in the Arduino Cookbook, it says I can play up to 3 tones in Arduino UNO and up to 6 six tones in Arduino Mega. In the attached circuit, the green area can be assumed to output a regulated 5 volts going to the Arduino Nano's 5V or possibly regulated 7 volts going to the Arduino Nano's VIN. I'm using multiple variables and three separate switch/case statements to achieve this. There are three potentiometer inputs that I want the Arduino to provide to the machine. They will certainly fire at the same time. The popular Arduino UNO has 14 GPIO pins you can use to output (or input) data. void setup() { PMC->PMC_PCER1 |= PMC_PCER1_PID36; //Enable PWM (Power On) but it is much more capable to do what i need it to do than the rest of the boards offered by arduino. Link for n-channel mosfets. I tried to search my question but did not find what I was looking for. I was not expecting strip1 to fully light before strip2. I use 7 Ledstrips (WS2812) on several pins of my An Arduino UNO (Atmega328) has 3 hardware timers and using the Arduino core library each timer controls two PWM pins. Hi, thanks in advance for any assistance in this matter. Connect the address lines of the different multiplexers together, and connect them to digital outputs on the Arduino (pins 2, 3 and 4 in this case). Hi, This is my first post on this forum as I am new to this whole Arduino universe. in the future i want to add more than on off to different button presses but so far i cant even add a second button to the script PLEASE HELP I am using an arduino uno to make a decently large project (for me, anyways). More elaborate projects often require you to use a large number of a microcontroller’s input and output lines. I considered a shift resistor, but there are so many variables. I can get one LED at a time to work but not both. Can you Do changes in code that At time multiple sensors can be work I mean if 2 sensor are active at a time both condition have to work at time 1 Like Paul_KD7HB January 27, 2022, 5:04pm Hi there, I'm looking at the library, I noticed that the NeoPixel class uses the Mailbox one, then sends the data to the pin. I have two connectors to plug the wires into and on one end it will be fed into an analog input (5x total) The fact that you are using LOW as the assertion level is what's causing the seeming reversal of these two ways of looking at it. g. Begin by placing the Arduino board on a stable surface and connecting it to your computer using a USB cable. And if you want millis() and microseconds() and delay() to continue to work, you don't want to mess with timer 0 for frequency control (you can get PWM from timer 0 if you accept the default frequencies). Hello everyone I'm trying to alternate between two digital outputs. I've learnt the very basics so far (using one sensor) but I have an idea for a project that I could really use some help with. I have 4 analogue hall effect sensors set up so when they detect a change in the magnetic field they turn on an LED (there is one for each sensor), and turn it off again when the magnet is removed. the distance to objects right in front of it, but also at a 10 degree angle to the left/right for example. Additionally, the HM10 requires something like 3. Right now I am using just two outputs together with LEDs for a test. The purpose of this is to output pairs of unique resistance values. 2 which go straight to the input and then one that has diodes to tie the other two together so when that button is pressed the other two are pressed at the exact same time. 8: 412: EDIT: problem resolved, replaced by newer, better problem! Hi, I am trying to integrate two separate P controllers that read different data and translate it into different responses, separately. Using two digitalWrites will turn on the pins within about 10uS of each other. println(b) Serial. At least 34 separate inputs, maybe more, are for sure necessary. For instance, when a reading of 60% is reached, then Dear all, I have hall sensor that can measure current upto 25 A . Have read the books that are out and most is lost on me. They are inherently digital, like the digital pins on the arduino- this means that they can only read or write 0V and 5V (low or high), they should not be used to read analog data from sensors or potentiometers (instead consider using a mux/demux such as the 10 seconds after Arduino is powered on: Fans turn off for 2 hours. So far I have two working individually but not at the same time. Since they can't be triggered at the same time I thought about connecting one pin each to the trigger pins and then join the echo pins (see attached image). Struggling with cods. I want to switch 220V DC 50 times per second with a mosfet. 3: 476: May 6, 2021 Arduino UNO Powered from 24V - 15A supply. Three random variables, This article is about how to easily and massively expand digital outputs by using the 74HC595N shift register with Arduino Uno or Arduino Mega. However, the two outputs have a different frequency so they cannot synchronize. 3v NOT 5v. Or is it the libraries (scheduler,RTC)? So for the software, I’ll have to write my own time code program to synchronize the I'm making a synthesizer using copper strips as capacitive touch sensors for the input with the arduino mega. We have the speakers, each with an amp of its own, but we really want to save time and not deal with making our own analog circuit and dedicated DSP chips are too expensive. My question is how would i go about using multiple LED's taking into account that Ken's library is coded to use one output. There is never a reason for it, and you risk breaking the pins output driver. What I need to do, is have some code where I can send something thru serial, to control a specific output. Project Guidance. I'm working on a project where I want to output various different resistance values using digital potentiometers. One that read every Digital Pin (with ISR) while doing some stuff. So I wanna change this connecting way by. For my project I would like to measure the distance seperately for several angles - e. And it only works for 8 pins at a time and they have to be on the same port. Now this Setting up the hardware for controlling multiple LEDs with Arduino is a crucial first step in your LED project. The remaining address bits could be used to select one of multiple patterns, e. I have two inputs and two outputs set up with hardware and code. Can anyone explain the reason for this, or how I can go about fixing it? In my project I have Arduino and Raspberry Pi Zero controlling via SPI one RGB LED strip (APA102). if signal comes first to On the 3rd row, I would like a counter to increment to show how many times ANY of the outputs have been active. h> #include "Adafruit_MCP23017. Using Arduino. I want to turn 16 midi cc messages on 16 channels to control voltages and depending on the midi channel i want to I have a schematic and code that work brilliantly, where the arduino reads an analog input(a sound sensor), uses Damien Clarke's ResponsiveAnalogRead library, and outputs analogWrite PWM values to an LED output. Either direct from an arduino's output, or depending on the distance between each mosfet and the overall distance of the wire (before voltage drop limits me) I may drive the string of mosfets from another transistor and use a higher voltage from another power source as to not overload the Please help me finish my project. I (Can the Arduino handle all of them at the same time?) -Will this method be possible if I need to supply a constant Voltage/Current to multiple ICs? Thanks! Arduino Forum Multiple PWM Outputs Question. When a pin is detected RISING then he outputs via serial pin 0 and 1 to another Arduino. This is the code i have so far int first_red_LED = 0; int second_red_LED = 0; int green_LED = 0; int button = 0; void The reason i want to do this is for the sake of neatness for the complete project instead of having the IR LED sit some distance away from the TV. 9: 1287: May 5, 2021 Generating 50 channels of PWM signals usin Arduino Mega 2650. hello. Therefor I want three speakers to make sound at the same time. If it is above 80° Hi! I'm pretty new to programming and just coding in general. I've come across something I would like to try and that is controlling multiple outputs without using the delay so that one output will be on for say 10000ms then off for 20ms and then back on for 10000ms again without stopping the loop and other functions. (LOL 🙂 not like I've seen that much on the forum) I have a pro mini, and would like to use the dac to take in an audio signal, and direct drive a speaker with multiple outputs from the pwm or digital pins. But I think this way will Occupy Pins of ARDUINO too much. I would like to hide the Arduino project box behind it. So, if you have a CD4051 8 port multiplexor, using 5 pins on the Arduino (instead of the usual 3), you can obtain 16 inputs or outputs, or a mix of the two. There exist multiple channel SPI interface Digital-to-analog converters, so it should be possible to build this sort of thing. To display these values on the serial monitor, we use Serial. If you still don't understand and want more, tell me and I'll add more code for Hello, I working on a project back in the beginning of 2024 a multiple temperature logger using the bme680 on i2c. Mind you that takes 3 pins. Thanks! Hi guys. I made a quick circuit (following this tutorial) and loaded the following code into my mega: #include <CapacitiveSensor. I changed the code from Hi everybody! I have an interesting question. (processing here refers to getting the inputs from sensors and displaying that on a 20X4 LCD display). While the title of this document refers to digital pins, it is important to note that vast majority of Arduino (Atmega) analog pins, may be configured, and used, in exactly the same manner as digital pins. having used pinMode in setup to declare these pins as outputs: PORTD = PORTD | 0b00111000; // set bits 5,4,3. What I am trying to do is have one switch turn on one led, have it stay on until a second switch turns it off and turns on another led. I ordered an Arduino Mega 2560 Rev3 a few days ago, also a breadboard, wires, and 100 LEDs (together with resistors). 000ms long, I don't really care when they occur. I would like to have two So for an engineering project we need to essentially create a small 5-way filter bank to be used as an audio crossover. ie. and If CDS photoresistor-1 get darkness then LED1 has to be a RED light. lzhgi ilralv zye zsrzdd xiof cwcl gsybg mmmk lhaft jalblfd