Hi everyone!
Like the post title states, I'd like to add more buttons to my CM3 build. I don't need a fan or analog inputs, so the add-on board seems to be overkill. From studying pictures of the add-on board, it looks like buttons are hooked up like this:
GPIO button GND
This assumes internal pullup resistors in the chip for each GPIO. Can someone confirm this?
Also, am I missing something else, like hardware debouncing?
Like the post title states, I'd like to add more buttons to my CM3 build. I don't need a fan or analog inputs, so the add-on board seems to be overkill. From studying pictures of the add-on board, it looks like buttons are hooked up like this:
GPIO button GND
This assumes internal pullup resistors in the chip for each GPIO. Can someone confirm this?
Also, am I missing something else, like hardware debouncing?