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Take a multimeter and measure the resistance between the left-most pin and each of the other pins with all the different combinations of button pairs pressed. Write down the results. … Then set up the 2 input pins on your Arduino as analog inputs and measure the voltage with no buttons, top button, bottom button, and both buttons pressed for each pair. Write those values down. …

Note that there is another, easier way to do this. If instead of setting your pin to INPUT, you set it to INPUT_PULLUP then internally the input line is connected through a resistor to +5 volts. Then …

To do button debouncing, try something like this: //Adjust debounceTime as desired. … Shorter times will make fore faster button //response, but make the debouncing less effective. 50 is 1/20th of a second. …

if (newMillis >= nextReadMillis) { byte newButtonState = digitalRead(buttonPin); //Only do something if the button state has changed if (buttonState ! … Note that if you want your LED to only light when the button is pressed, you could control it with another digital pin. …

You'll probably want to respond on releasing the button, since at that point it's easy to tell if it was a long or a short press. … press_in_progress press_in_progress = true start = millis() else if press_in_progress //Button has been released elapsed = millis() - start press_in_progress …

You have your switch shorting both pin 1 and V+ to ground when you press the switch. Do not do that. The resistor you have isn't doing anything at all. It isn't really a meaningful part of your circu …

A pushbutton is a pushbutton. It is a momentary switch. Since it has flexible wires, and needs a place to mount, you should probably wire it using a breadboard. That pushbutton looks like a panel moun …

I'd suggest code like this: void loop() { if buttonStates[0] == HIGH { //code to handle button 0 (pin 2) being pressed } if buttonStates[1] == HIGH { //code to handle button …

Your code has various issues, but the main one is that you can’t use delay() when you’re trying to more than one thing at a time. Delay causes your program to freeze, and not do anything else. (Basic …

You can then add control logic that starts and stops individual objects based on things like button presses. … With this approach you'd have your button 1 press stop animation 2 if it was running and run animation 1. Conversely, pressing button 2 would stop animation 1 if …

I'd suggest creating an array of MIDI button structs. For each entry you'd have a button object, an LED pin, and a BOOL to track the state of thate button. … Write a function that loops through the array of structs, checks the state of each one, and does the work to play/stop the notes and toggle the LED states based on the state of each button. …

You set the LED to 2 different brightness values that don't have anything to do with each other: The pot brightness and the button-based brightness. … Should the button input alter max/min value of the pot up and down? Should holding the button down change the brightness by 1 value per a specific time unit? Say 2 increments/decrements per second?) …