My project need to use 10 buttons, may I know how many buttons BR4 can handle? the UNO board have 6 Analog In (A0-A5), is that mean that I can only use 6 buttons ? Thank you!
My project need to use 10 buttons, may I know how many buttons BR4 can handle? the UNO board have 6 Analog In (A0-A5), is that mean that I can only use 6 buttons ? Thank you!
If you search the web, you can find many button matrix examples... You can have as many as 64 buttons with only one I/O pin...
It all depends on what you want to do with them... But, usually, a button is not used on analogue pins... As they have only 2 states...