This is probably the smallest Arduino controller speically designed for controlling the servo. It features a 12 standard servo control capbility with Xbee socket which can be used to control helicopter or UAV via the Xbee link. The feather weight (7.5g) make it an ideal controller for those application that has limited payload. The build in regulator is allow the input voltage vary from 3.5-8V which fits the most power supply without any modification.
Designed originally for the Rover 5 chassis this driver PCB is ideal for any small robot
using either Omni or Mecanum wheels. Current sensing for each motor allows the
processor to determine if a motor has stalled or is under excessive load.
BT-410 dongle converts two interfaces: USB 2.0 interface and Bluetooth 4.0 Low Energy interface (master function). That is, if you connect BT-410 dongle to the PC, it can be paired with BT-410 Slave module to exchange data (1:1 communication).
The OpenCM 485 Expansion Board connects to the OpenCM9.04 controller to connect Dynamixels that support RS-485 and TTL. Battery connectors for batteries such as LIPO and Li-ion can be connected, and SMPS connector can be connected as well.