I received my OnOff SHIM today and installed it on my Pi3B+. It works flawlessly using the included push-button or an arcade-button attached to the breakout-pins.
I would love to use one of these toggle-switches. The LED-feature is optional. I tested if they would work by just crossing 2 jumperwires attached to the button-breakout-pins. Result: the Pi boots but keeps hanging on some point. I can’t see anything valuable in the logs. Any ideas for this?
I also found this guy on YouTube who seems have it working using a different toggle-button.
Thanks for your help…