I have added a diode to every button. Now I can detect more than 2 simultaneous button presses.

The circuit works pretty well on the breadboard. The multiplexed LEDs are flickering, but I think I can fix this in software.

I also ordered the PCB today, it should be here in a month or so.
Jeremias
Discussions
Become a Hackaday.io Member
Create an account to leave a comment. Already have an account? Log In.