Freaduino Sensor Shield with XBee Shield

Freaduino Sensor Shield is a IO expansion board. It is full compatible with Sensor Shield V4.0 and it is a enhancement version. You can control servo or all kinds of sensors through XBee or our BTBee(HC-06). And external power supply for servo allowed you to drive more powerful servos, and it is optional between 5V on board and external power supply connector.Break out for SPI,IIC and UART bus make bus connect easier.