LED Always On

Creteloc

Sorry if this has been posted. I searched but only came up with how to light up the buttons. My problem is that they are always lit! A friend's arcade has this setup and his buttons only light up when they are pressed. He said he did that in RetroPie's config files but can't remember where. Any help is appreciated.

Pi Model or other hardware: (B, B+, 2 B, 3, X86 PC etc..) : CanaKit Raspberry Pie 3 B (not +)
Power Supply used: (If using a Pi) : 2.5A USB Power Supply
RetroPie Version Used (eg 3.6, 3.8.1, 4.1 - do not write latest): : retropie-4.5-rpi2_rpi3
Built From: (Pre made SD Image on RetroPie website, Berryboot, or on top of existing OS etc.. - please provide the filename of any image used) : Put the image on an SD card
USB Devices connected: The button control pads are USB, so 2 of those
Controller used: https://www.amazon.com/gp/product/B00WAY9848/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
Error messages received: None
Log found in /dev/shm/runcommand.log (if relevant): N/A
Guide used: (Mention if you followed a guide) : Can't find one
File: (File with issue - with FULL path) : N/A
Emulator: (Name of emulator - if applicable) : the one with Retropie 4.5

IanDaemon

He did it in software? This would be easy to do in the hardware. Just wire up the circuit so that the light only receives power when the button is pressed.

Creteloc

Any ideas how I can do that?

alt text

IanDaemon

Ah, you don't have access to the switch circuitry. Software could be the solution without opening up the buttons or altering wiring. How comfortable are you altering the wiring on these pre-wired buttons?

Creteloc

I'm willing to give it a go. That thing could light up a city in the middle of the night and I don't want them on all the time.

Halvhjearne

@Creteloc

if there is no software from the manufacturer to change this (which i doubt for a cheap encoder like this), you might aswell give up, the microswitches you have, simply cannot physically handle what you want them to do.

however, if this is just a matter of the leds being too bright, you could just add some resistors to lower the brightness of the leds.