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This bot is remote controlled over Bluetooth using a Bluesmirf module. This works just like a wireless serial port.I have written a program for my smartphone which sends serial commands to the Picaxe via Bluetooth, and the Picaxe then moves the motors using an L293 motor driver chip. Unfortunately the Picaxe doesn't have enough built-in PWM channels to drive the motors proportionally forwards and backwards so I wrote my own PWM routine. However this can't run in the background so there is ...
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/bluetooth-controlled-robot-updated-new-video