6 Photos - Mar 19, 2013
Photo: The release version of InterPi has Grove connectors for 3.3V SPI, 5V UART and 3.3V I2C bus. A Quick2Wire connector serves for 5V I2C and an ICSP connector is for 5V SPI connection. There is also a connector for a Tiny RTC module on the 5V I2C bus segment and there are headers for the remaining buffered GPIOs.Photo: Two FETs perform level shifting for the high integrity I2C bus, making it a simple matter to include a connection for the Tiny RTC (blue board).Photo: Despite its small size, InterPi offers a substantial 5V and 3.3V connectivity solution without compromising performance.Photo: The inexpensive Tiny RTC module is intended for 5V Arduino systems but is fully compatible with Raspberry Pi via InterPi's 5V I2C bus segment.Photo: InterPi is fitted here with a Tiny RTC (clock etc) module, mated with Raspberry Pi and conjoined with InterSPi operating at 5V for a compact but substantial interfacing solution.  The high-integrity I2C bus connectors are at the lower right of the picture.Photo: InterPi allows a mixture of 3.3V and 5V devices to connect to Raspberry Pi.  Here, there is an InterSPi operating at 5V (lower right), MegaWire operating at 3.3V (centre) and a Quick2Wire Port Expander (upper left) operating at 5V, a capability that is not supported by the Quick2Wire Interface Board.