Raspberry Pi Pinout


  • GPIO (General Purpose IO)
  • SPI (Serial Peripheral Interface)
  • I2C (Inter-integrated Circuit)
  • UART (Universal Asyncronous Receiver/Transmitter)
  • Ground
  • 5v (Power)
  • 3v (Power)

Expander Pi

Expander Pi is a versatile digital and analogue expansion board. It allows you to connect your Raspberry Pi to switches, lights, sensors, and many other devices giving you a way to communicate with the outside world.


8 channel MCP3208 12-bit ADC with a maximum sample rate of 100 ksps and includes a 4.096 volt precision voltage reference.
2 channel MCP4822 12-bit DAC with an internal voltage reference.
16 digital I/O channels, using an MCP23017 16-bit I/O expander with a maximum input of 5 volts on each channel. A Real Time Clock using a DS1307 RTC and a CR2032 battery to maintain the date and time when the main system power is not available.

Python, C, C++, Node.js and Windows 10 IOT libraries are available on GitHub.


Expander Pi