Arduino and Arduino Uno compatible GPIO expansion board designed exclusively for the Raspberry Pi. The GertDuino is a Raspberry-Pi add-on which offers the same functionality as an Arduino-Uno but with some extra features; connects to Raspberry Pi and has dual Atmel MCU capability onboard. GertDuino offers onboard Atmega 328 shield hosting which will execute Atmega 328 code written and compiled on the Raspberry Pi. The onboard Atmega 48 provides RTC IrDA front-end and additional computational capability. Arduino and Arduino Uno compatible GPIO expansion board; Atmega 328 shield hosting will execute Atmega 328 code written & compiled on the Raspberry Pi; Onboard Atmega 48 provides RTC IrDA front-end and additional computational capability; Supplied with free to download software and tutorials; Connects to all Arduino shields; Real Time Clock with Raspberry-Pi Wake-up; IRDA receiver; RS232 interface for interfacing with other devices; Intelligent slave I/O interface I/O expander; Embedded Design & Development; Hobby & Hardware Hacking; Portable Devices; Robotics