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A few days ago I was doing some testing of the Motor Mind C (MMC). I also had a PC cabinet sitting in the lab that was unused. After my work was done I decided to turn the PC into a remote controlled mobile robot. This was pretty easy to do using the Motor Mind C, the Motor Mind C - BS2 Carrier Board, and some EZ Roller robot wheel kits.
The control system for this "robot" is simplified by using an off-the-shelf radio control transmitter and receiver. The MMC can control two DC motors bi-directionally and proportionally. By operating it in RC mode the need to develop a software control system or test sensor feedback is elminated. You can simply control the robot remotely. This design has two DC motors slaved to each H-bridge on the MMC (for 4 motors total).
The PC chassis is a little heavy for the EZ Roller kit (it weighed in at 23lbs). The EZ Roller can be purchased with a plastic wheel and O-ring, or a foam tire. For this design I used the plastic O-ring and removed the O-rings on the rear wheels so the PC Bot could slide better. You could also replace the rear wheels with a pivoting free wheel.
While I used the MMC BS2 Carrier Board for the PC Bot, the only benefit to this is that connectivity is easier. Here's a schematic for the connections directly to an MMC (carrier board not shown).
and here is a link to a PDF file of the schematic.
Finally, here is footage of the PC Bot being tested.
Pre-youtube video
The control system for this "robot" is simplified by using an off-the-shelf radio control transmitter and receiver. The MMC can control two DC motors bi-directionally and proportionally. By operating it in RC mode the need to develop a software control system or test sensor feedback is elminated. You can simply control the robot remotely. This design has two DC motors slaved to each H-bridge on the MMC (for 4 motors total).
The PC chassis is a little heavy for the EZ Roller kit (it weighed in at 23lbs). The EZ Roller can be purchased with a plastic wheel and O-ring, or a foam tire. For this design I used the plastic O-ring and removed the O-rings on the rear wheels so the PC Bot could slide better. You could also replace the rear wheels with a pivoting free wheel.
While I used the MMC BS2 Carrier Board for the PC Bot, the only benefit to this is that connectivity is easier. Here's a schematic for the connections directly to an MMC (carrier board not shown).
and here is a link to a PDF file of the schematic.
Finally, here is footage of the PC Bot being tested.
Pre-youtube video
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