It is a robot platform from LINK (scheme and pictures). It was modified by adding a LCD 2x16 characters. Also a bluetooth receiver Nokia BH-101 was added. The device has a reflection system from Baumer Electric. The source of light is 5 LED lamp. There are also indicators of the decoder state (4 red and 1 blue LED). 2 switches are used to switch the electronics and motors. You also have to add the housing and radio mount.
Pictures:
Control by bluetooth is done using a standard sound of a Nokia 5530 keypad. 2 cables connect the bluetooth receiver (speaker) and the long-range transmitter or directly to the robot. Bluetooth range is about 10-15meters. Radio – 5km.