Learn how to connect multiple buttons to just one Arduino pin using clever wiring and resistor techniques. Perfect for compact projects, keyboards, or when using small boards like the Nano or Pro ...

Additionally, the Uno features two extra pins, a duplicate of the A4 and A5 pins (meaning, they're internally connected), that you can dedicate for I2C/TWI communication.

Arduino created a Renesas RA4M1 microcontroller board in its Nano form-factor. Called Nano R4, it follows the Uno R4, the first Arduino to use the RA4M1. Episode 13 of our podcast CHIIPs is out now, ...