DFRobot (DFR0327) Arduino Expansion Shield, for Raspberry Pi B+/2B/3B/3B+

Product Information Add-On-Card & Module Type: - Silicon Manufacturer: Microchip For Use With: Raspberry Pi B+/2B/3B/3B+ Board Core Architecture: AVR Core Sub-Architecture: - Silicon Core Number: ATmega32U4 Silicon Family Name: ATmega Kit Contents: Arduino Expansion Shield, 20cm Micro USB Cable, CR1220 Button Cell Product Overview Gravity Arduino shield for Raspberry Pi B+/2B/3B/3B+ ATmega32u4 on-board microcontroller Arduino Leonardo chip, Arduino compatible pin mapping Compatible with all Arduino standard shield and sensors System voltage is 5V 20 Arduino digital I/O, 6 Arduino analogue I/O 16 Raspberry Pi B+ GPIO, 1 Raspberry Pi B+ I2C, 1 Raspberry Pi B+ ID I2C Raspberry Pi B+ SPI, Raspberry Pi B+ TTL UART Dimension is 86mm x 61mm x 26mm (3.46"" x 2.20"" x 1.02"")