Q: Help I need more pins from my Arduino Leonardo board. Is it possible? A: Yes it is! Read lines below for explanation, how to. Arduino Leonardo board is using an Atmel atmega32U4 microcontroller which have 26 I/O pins. Arduino R3 platform is designed only to use 20 of them. So if you are working…

How to use all available pins on Leonardo (atmega32U4)

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