I am using an Arduino Uno to light up the LED buttons for an arcade machine console. There are about 18 Buttons in total. 9 red and 9 blue. i am using digitalWrite(ledButtonPin, HIGH); to turn the buttons on and off. whats happening is that only the blue buttons are turning on. when I remove the …

Arduino Output Pins only providing 3.5v

system April 27, 2018, 11:42am 15

(deleted)

Topic		Replies	Views
OUTPUT PIN and LED General Electronics	8	2292	May 6, 2021
many buttons, one problem with voltage LEDs and Multiplexing	3	997	May 6, 2021
Voltage divider and old post. General Electronics	7	2893	May 6, 2021
Problemas voltajes Arduino Español	13	5953	May 6, 2021
arduino pin outs with relays Troubleshooting	4	1626	May 6, 2021