In terms of specifications, the classic Nano board doesn ... in size and microcontroller, the Arduino Nano and Micro share some similar pinout configurations. They both have two GND pins, two ...

Each of the 14 digital pins on the Arduino Uno can be used as an input or output, using pinMode(), digitalWrite(), and digitalRead() functions. They operate at 5 volts. Each pin can provide or receive ...

The Arduino Uno Rev3 is the third revision of the classic Arduino Uno board ... However, the R4 WiFi introduces new pinouts and special pin functions you don't see on the Rev3.