Hello everyone, this is my first post on this forum.
I'm working on my first diy project which is a F1 wheel with some leds, 7 segments screens, led matrix, buttons and so.
The problem is: I am using a Arduino Pro Micro, that will sit insde the wheel, and I need more IO than it provides me. Is it possible for me to use a CD74HC4067 for multiplexing digital buttons? With this CI's pinout I may use 5 pins for 16 buttons, instead of 6 pins for 9 buttons.
Is there any special thing I should do alongside declaring the multiplexer properties on the sketch?
I've superficial knowledge on programming, so if anyone more capable could help, I would be very grateful.
PS:
Also, I've read about desoldering the ProMicro tx/rx led indicator resistors for two more pins (B0 and D5), has anyone already done that? Could I just do it and add those two pins to the button matrix on the SimHub Arduino Configurator, then just set the pins on the sketch manually?
Good evening! Have you made any progress on that issue? I managed to connect the code SimHub gave me to the multiplexer, but I couldn't get it to display button presses on the joystick. I only saw it on the Arduino serial monitor. Regards