Now that you have the new Raspberry Pi 3, a chart mapping out the GPIO Pins would be handy wouldn't it? We thought so and created this quick guide!
Power - These pull power directly from the Raspberry Pi 3
Ground - Pins used to ground your devices. You can use any of them as they are all connected to the same line.
UART (Universal Asynchronous Receiver / Transmitter) - Serial pins that are used to communicate with other devices.
I2C (Inter-Integrated Circuit) - Pins that allow you to connect and talk to hardware modules that support I2C protocol.
SPI (Serial Peripheral Interface Bus) - Pins that allow you to connect and talk to hardware modules that support SPI protocol.
GPIO (General Purpose Input / Output) - Standard pins that can be used to turn devices on and off.