This is Waveshare Adapter Board for Arduino and Raspberry Pi .

ARPI600 is a Raspberry Pi Expansion Board, it simply adapts the Raspberry Pi GPIO interface to Arduino pinouts making it possible to use your Raspberry Pi with a precious number of Arduino shields and hardware/software resources. The ARPI600 also supports XBee modules, adds up wireless features without having to hassle up with wires.

• Arduino connector: for connecting Arduino shields
• ICSP interface : Arduino ICSP
• XBee connector: for connecting XBee communication modules
• Sensor interface: for connecting sensors
• Raspberry Pi connector: for connecting Raspberry Pi
• USB TO UART
• TLC1543: AD converter
• PCF8563 : RTC
• CP2102
• 32.768KHz crystal: for RTC
• Power indicator
• XBee state LED
• XBee and Arduino interface RESET button
• XBee EasyLink button
• RTC battery holder: for the CR1220 button battery
• TLC1543 reference voltage configuration jumper
• RTC jumper
• UART jumper
• Arduino AD selection jumper
• Arduino I2C selection jumper
• Arduino SPI selection jumper

Features:

• Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano.
• Compatible with Arduino UNO, Leonardo, easy to connect with various Arduino shields.
• XBee connector for connecting various XBee modules.
• Sensor interface for connecting various sensors.
• USB TO UART onboard for serial port debugging, also can be configured as an XBee USB adapter.
• Onboard ADC, 10 bit, 38KSPS, 11 channels (6 channels for Arduino interface, 5 channels for sensors).
• Onboard RTC.

Package Includes:

• 1 x ARPI600
• 1 x USB type A plug to mini-B plug cable
• 1 x RPi Screws Set