Hi Azhar,

I'm afraid you've very little chance of getting the exact same motor/gearbox’s that I used on the project - I used to work for a company that repaired photocopiers and fax machines so mechanical parts like motors we easy to come by. I didn't pick them specifically, they were just available at the time I built the robot. Since they were 'salvaged' from scrapped equipment there was absolutely no parametric data - sorry. You could try looking on eBay for a suitable motor/gearbox combo.

Pins 1 and 3 were unassigned so feel free to use them for whatever; it shouldn't affect the basic operation.


Please Note:
The Datasheet for the BA6826 Motor Controller can also be viewed directly at:
http://www.rohm.com/products/databook/motor/pdf/ba6286.pdf