Each of the 14 digital pins on the Arduino Uno can be used as an input or output ... These pins are connected to the corresponding pins of the ATmega8U2 USB-to-TTL Serial chip. PWM: 3, 5, 6, 9, 10, ...

The Arduino Uno Rev3 is ... Many pins on the Rev3 and R4 WiFi share similar functions to ensure compatibility with existing hardware. However, the R4 WiFi introduces new pinouts and special ...

I myself own an Arduino Uno R3 and found that it can simplify my projects development and microcontroller programming, but sometimes I need to know the Arduino pinout. That is why I have written this ...