MobiFlight Community Support

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Message #24883

e4rthdog

Posts: 10

Hi All!

I have the following momentary push button that has a led on it. Can somebody tell me how to connect to arduino mega?

https://postimg.cc/ZWkChcy0

https://postimg.cc/WqFbBFNM

2022-01-14 10:14

Message #24886

Whiteknuckle157

From: Bayern - Bibertal, Germany

Posts: 50

Hi,

at the R16-503 the upper two connectors labeled with + and - are for the LED. Since the LED of the R16-503 operates with 3.3V you might need a resistor. The lower two connectors are for the switch.

You may connect as follows:

The - connector and one of the lower connectors to ground (GND)
The + connector to a resistor (470-1.2k may be sufficient) and the resistor to the arduino digital output. Preferable to a PWM output in order to also control the brightness
The other lower connector goes to the Arduino digital input

cheers

Volker

2022-01-14 13:09

Message #24889

e4rthdog

Posts: 10

It worked just fine!

Thank you very much.

2022-01-14 16:01