I am trying to wire up several momentary switches - but these only have two poles: [image] I have one pole going to the PIN5 (digital input) on the arduino, and the other going to the +5V line. Where do I wire ground to with the 10K pulldown resistor? I was able to make this work with a tactile …

Wire it to ground and use the internal pull-up resistor. pinMode(5, INPUT_PULLUP);

The internal pullup was giving me unpredictable results, is there a way to do it with the pulldown? On that tactile switch, that is effectively still a two pole switch right? It just has two pins for each pole

I am pretty new to the arduino stuff - i am not using a button library that i know of

Adapted from the link in post #4: #include "Arduino.h" // 1. Include the library #include "EButton.h" // 2. Instantiate the object and attach it to PIN 5 EButton button(5); // 3. Handler method for a single-click void singleClick(EButton &btn) { Serial.println("We have a single-click!"); } void…

I think this will answer most of your questions about connecting buttons of all kinds: [image] Buttons and other electro-mechanical inputs (introduction) General Electronics Intended audience This tutorial is intended for people who have mastered the basics of electronics…

Wire switches as S3 is wired below. A LOW on the input pin indicates the switch is closed. [SwitchesAndLEDs]

[image] barrychapman: The internal pullup was giving me unpredictable results, Can you explain more about what you were experiencing with INPUT_PULLUP? What code were you running?

Maybe those switches do not make good contact a very low current flow, not dry circuit type, but are designed for switching higher currents.

Thank you, this clarifies things a lot

How do you wire momentary switches with only two poles

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jfjlaros January 8, 2023, 5:18pm 4

That is probably because of bouncing. Have you tried to use a button library?

https://www.arduino.cc/reference/en/libraries/ebutton/

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How do you wire momentary switches with only two poles

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