Questions tagged [button]

A button is a simple input component which responds to being pushed by a user.

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strip.clear() is not clearing/turning off the NeoPixel strip after resetting the ESP8266

In the code below which is running on a WEMOS D1 (ESP8266), a NeoPixel strip turns on 1 LED in red which moves left to right and then right to left whilst the board attempts to connect to Wi-Fi in the ...
Lachlan Etherton's user avatar
0 votes
1 answer
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Sketch halts if button is pressed on boot

I have a KY-040 rotary encoder with a push button wired to an ESP8266. My objective is to be able to detect if the button is pressed or not on boot. In the below code, if I hold the button down and ...
Lachlan Etherton's user avatar
0 votes
1 answer
218 views

Turn on by long press of a button?

In my project on Arduino, I want to implement turning on the whole circuit by long press of a button. But at the same time, I want the Arduino to be turned off in standby or sleep mode, but I don't ...
EndyVelvet's user avatar
-1 votes
2 answers
209 views

Arduino Pro Micro not recognizing INPUT or INPUT_PULLUP

I tried to make a controller box with multiple buttons. Sadly, when I tried to connect the buttons, the Arduino Pro Micro didn't recognize them being pressed. I even tried to connect a wire directly (...
szilard1996's user avatar
2 votes
1 answer
57 views

Code not Executing Reliably on Push Button Activation

I have put together the following code to activate a motor using an Arduino Uno via push buttons. Two push buttons should be pressed simultaneously to activate the motor for a specified number of ...
chandler's user avatar
2 votes
1 answer
458 views

Push button issues

I have been using https://wokwi.com/ to learn Arduino and I am having a problem that seems to be happening no matter what I do. I am trying to set up a push button and an LED. The end goal here is to ...
wgm's user avatar
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214 views

LED doesn't completely turn off with digitalWrite(led, LOW);

When I was testing out a program I found a strange behavior of ESP8266. LEDs don't turn off completely in the first digitalWrite(led, LOW), just the brightness of the LED goes down, but it does turn ...
tatu101's user avatar
  • 73
2 votes
1 answer
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ESP8266 seems to be killing a while loop

When i was testing out a program I found a strange behavior of esp8266 It seems to get out of a while loop even when there's no option of getting out on code I don't know if these are related but here'...
tatu101's user avatar
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1 vote
2 answers
305 views

How do I turn on 3 LEDs in a repetitive sequence where all three LEDs would then turn OFF when the push button used is released?

Basically, how do I modify my code listed below to turn ON each of the three LEDs one at a time in a repetitive sequence while keeping the push-button pressed? Red (3 sec), Yellow (1 sec), and Green (...
Mars's user avatar
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2 votes
0 answers
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How to show repeated result on LCD while button is pressing

my results are here. 0 press--"a" 1st press--"b" 2nd press--"c" 3rd press-- still showing "c" When button pressed 3rd time, It must be repeated to show "a&...
hfsrg's user avatar
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2 votes
2 answers
176 views

Tone() generates a high pitched sound when button is released

I have a simple circuit that makes use of the tone() function to produce some sounds. I also have a button, hooked with an interrupt function, that whenever is pressed, a variable changes. Sometimes, ...
user1584421's user avatar
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2 votes
1 answer
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Button Matrix / Wiring Schematics

I am just beginning my journey into the Arduino world - plenty of development experience, but basically nothing with electronics outside of building computers. The question I have involves wiring ...
Scott Salyer's user avatar
1 vote
0 answers
79 views

Unable to use RF M4 Receiver with servo motor

I am trying to control a servo motor with the following code: #include <Servo.h> Servo servo; int const inputPin = 3; void setup() { Serial.begin(9600); servo.attach(9); pinMode(...
A P's user avatar
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0 votes
3 answers
2k views

Interrupt on button press + debouncing

I want to have an interrupt function executed whenever a button is pressed. The button is connected to pin 2 and the GND. Therefore, the pin is turned to LOW whenever the button is pressed. In ...
user1584421's user avatar
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When a button is pressed, it interferes with TFT screen

I'm trying to build a simple device to monitor my heart rate. The components are the following: A TFT 2.8" LCD screen to display relevant information for the user. 3 buttons for the user to ...
Arnau's user avatar
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2 answers
2k views

The same button with one click and double click [closed]

i hope to get some help with my code. I am trying to distinguish between a single press and a quick double press of the button with debouncing. I am making some silly mistake in my code and i can't ...
Carlos Costa's user avatar
0 votes
1 answer
111 views

Arduino Mega, 6 push buttons for each analog input (A0-A9) - closing one results in reading by other

On day to day basis I'm more of a high level programmer, with little electronics knowledge, apologies in advance if I lack some nomenclature or basics. I communicate with my Arduino Mega via firmata, ...
wopolow's user avatar
  • 103
2 votes
1 answer
1k views

How to count steps of a stepper motor with AccelStepper?

I want to turn on my motor and count how many total rounds it has until my limit switch is switched on. After that, I want to count rounds counterclockwise until another limit switch is pushed. For ...
Korte Alma's user avatar
-1 votes
2 answers
100 views

Question about Buttons and INPUT_PULLUP

I am ok as a developer but have very little experience if it comes to electronics/hardware. I am always too cautious and have the fear that I could wreck something with the wrong wiring. This question ...
Mister Woyng's user avatar
0 votes
1 answer
139 views

Arduino alternating between high and low signal without button press

I have connected my LCD with arduino uno. I am controlling contrast with the library and not the potentiometer. I am trying to read input from the button, it is connected to pin 9 of arduino. The ...
Rice's user avatar
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0 votes
3 answers
654 views

Trigger event onRelease of button

I am using the EasyButton library to detect button presses on an arduino. I want do execute a function when the user Presses a button Presses and holds a button Releases a button Detecting when a ...
spuder's user avatar
  • 111
-2 votes
2 answers
287 views

Problem with push button

I am making a project where if the push button is pressed, the LCD screen will show a message. But with many trial and errors, it doesn't give the right result. Here is the circuit: Here is the code: ...
James's user avatar
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1 vote
0 answers
125 views

HOW convert momentary button to touch sensor TTP223?

I am trying to convert this project https://maker.pro/arduino/projects/simple-fm-radio-receiver-with-arduino-uno-and-rda5807m to 3 touch sensors TTP223. But so far my new code don't work. Please can ...
massimo's user avatar
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1 vote
1 answer
154 views

Can't figure out why what I'm trying to do isn't working. Trying to light up a RGB with buttons with AnalogWrite

DISCLAIMER : I have just started Arduino, like 2 days ago, I've been following some tutorials on YouTube, and I tried to do this myself, but I can't figure out why it isn't working, can't find what I'...
salfysox's user avatar
3 votes
1 answer
144 views

Simulating a button press using the Serial Monitor to run a Servo

I'm kind of new to Arduino and C, and I was having trouble with this sketch. I'm working on a project to control 6 servos using virtual buttons. When I hold down the button, the servo moves forward ...
rayank97's user avatar
2 votes
2 answers
661 views

Toggle button switches through case statements with button debouncing

The overview of my code is that I want a toggle button to be pushed and each button push will move the code to the next case statement. In each case statement, there will be different LED functions. I ...
Myles's user avatar
  • 73
0 votes
3 answers
716 views

How do I modify the value of a variable when I press a switch

I am new to arduino and I want to make a project where I have a motor spinning clockwise then when a button is pressed it spins anti-clockwise and if it is pressed again it goes back to clockwise etc.....
bstplyr2401's user avatar
-1 votes
1 answer
82 views

Pressed Buttons are permanently low and one of them is not working [closed]

I am a beginner to Arduino, and I'm having a problem in a project that I am currently working on. I was just beginning to write the code, after preparing the components and the wiring, and suddenly ...
lolflexgameplays's user avatar
7 votes
5 answers
4k views

What is the best technique to design a 20 push button circuit

I will be controlling a robot with more than 10 motors which means I'll need 2 buttons each to control moving forward and backward. My controller is an Arduino mega. Is 1 pin = 1 button the best ...
Julius's user avatar
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5 votes
3 answers
2k views

How do I make another action repeat inside a loop?

So, I've just started programming Arduino (and also in general), so I'm doing basic things, like switching on and off LED's. I've made them light in a sequence and then turning them off (in the same ...
AndreFro's user avatar
0 votes
2 answers
270 views

Problem with DC motor

I've got a circuit with Arduino UNO Rev3, DC motor, button to switch direction of rotation and potentiometer to regulate revs. The problem is that usually when I increase voltage using potentiometer, ...
Maciaz99's user avatar
1 vote
1 answer
777 views

Detect button press in a loop

I am designing simple "Simon Says game" using Arduino. Simon says is a game in which a LED pattern is played and user has to mimic the pattern. There are 10 Rounds. First Round = 1 led, ...
Snoke's user avatar
  • 23
1 vote
2 answers
200 views

Serial.print() Inferferes with my digitalRead()

I'm running into issue properly reading a button connected to a digital I/O pin on my Adafruit Feather HUZZAH ESP8266 device. I've implemented the debouncing script exactly as the Arduino provided ...
Marc's user avatar
  • 31
1 vote
1 answer
797 views

How to connect an Output to a Pullup Input of another arduino

:tldr; Could problems occur if one connects a HIGH Output of one arduino to a PULLUP_INPUT of another while using differed power sources? Hi I'm building some devices for a LARP Dungeon (think Escape ...
Karl Sanathos's user avatar
2 votes
3 answers
127 views

Send button only works when pressed immediately after

I am new to Arduino and I am trying to create a Morse code based "chat". I can submit a message in Morse code using the send button (the one on the right,) and when I press the button on the ...
MarryPoppins's user avatar
1 vote
1 answer
179 views

Arduino UNO With On / Off Module Switch + Battery Advice

So I have the following connected and the programming works fine when connect by USB The Parts 1 Arduino UNO 1 Laser Module (KEYS) 1 Rocker Switch Module (Standard 3 PIN) 2 Variation Motors (KEYS) 1 ...
Davinco's user avatar
  • 21
2 votes
3 answers
611 views

How do I make my piezo buzzer only hum once without repetition?

I have a problem with getting my buzzer to only do the tones I programmed in once. I know I have to add some sort of code but I'm relatively new to this so I don't really know. I want it to start ...
Éemia's user avatar
  • 33
0 votes
2 answers
269 views

Pushbutton to initiate a 5 time flash

The following code operates in a way that LED starts to flash only if the pushbutton is pushed for one second. I want to change this and make the LED flash for 5 times, immediately on push, regardless ...
Varonne's user avatar
  • 89
1 vote
1 answer
164 views

Arduino button voltage versus HIGH/LOW state

I'm measuring voltage between button's ground and input pole on the following sketch. When button is on off state, there's 5V there, when it's switched on and led turs on, there's 0. Is this a correct ...
Varonne's user avatar
  • 89
2 votes
1 answer
2k views

Making pushbutton behave as a toggle switch with ezButton - do I have to use ledstate with =! operator

I'm using ezbutton to make a pushbutton act like a toggle switch, first press doing permanent on, second press doing permanent off. I'm just trying to understand the basic coding. This project is just ...
Varonne's user avatar
  • 89
3 votes
1 answer
310 views

Increase or decrease const byte value inside the code with a push button

I'm kind of new in the Arduino world. I decided to make a self learning project with an Arduino where it controls a conveyor that simply moves from right to left and back again. There is a start and ...
Carlos Costa's user avatar
2 votes
0 answers
156 views

Single LED controlled by two pushbuttons - one of which acts like a toggle switch

Trying to control this LED with those 2 pushbuttons - one button that starts a short flashing sequence, another pushbutton acts like a toggle switch, one press bulb is on, another press bulb is off. ...
Varonne's user avatar
  • 89
1 vote
0 answers
99 views

Why is my button not working?

I'm trying to making a traffic light for my school project but my button for the traffic light doesn't work. The traffic lights should light up normally but when the button is pressed all LEDs should ...
fatihakan21's user avatar
0 votes
1 answer
1k views

Arduino while loop with or condition

How do I write a program to wait (delay) until one out of two buttons pressed? I have written a program to wait until a single button is pressed. It's working fine. However, if I extend it to second ...
Ak Rikas's user avatar
1 vote
1 answer
618 views

Stepper motor won't change directions!

I am driving a bipolar stepper motor with an a4988 driver using the AccelStepper library. My goal is to press a button and the motor moves CW, then another button for CCW. I have looked at another ...
Epsicro N's user avatar
1 vote
1 answer
46 views

Unable to make a really basic sketch work

I've been learning how to encapsulate my code within functions, and one of the examples I worked on is a simple INPUT_PULLUP button. When I upload the sketch from the arduino website everything works, ...
Zhelyazko Grudov's user avatar
1 vote
1 answer
433 views

How to wire and control a 16mm button with 2 legs using arduino?

I can't find any tutorials online explaining how to wire and control a 16mm push button like the one in the picture: Do you have any suggestions as to how use it with an arduino or a raspberry pi?
S.E.K.'s user avatar
  • 53
1 vote
0 answers
82 views

How to make my sensor reads when i pressed the button

Hi I'm making a digital fare meter, I have a problem in how my sensor reads when I'd pressed the button(single tap). I need the sensor to read once I pressed the button because when I press the button ...
SkilleX's user avatar
  • 11
1 vote
0 answers
532 views

Using AccelStepper to move a set distance while a button is held down

I'm working on a project and using a nema 23 stepper motor and driver. Need to be able to move the stepper 1/32 rotation when I press a button. I need a small delay so I have time to release the ...
clint's user avatar
  • 11
-2 votes
1 answer
238 views

Push button restarts the arduino [closed]

I have linked an external push red colored button to my arduino but when I press it, instead of giving me HIGH or LOW, it resets the arduino. I am a beginner to this stuff so could someone help?
Siddharth Agrawal's user avatar

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