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Very new to this site. Been playing with this project on and off for 6 months. Completed once then went back to and it wasn't working. Tried to troubleshoot and burnt out the chip. Pulled out the whole circuit board. Then rewired the battery pack. At that point it is just the frame DC motors on front and back(front geared to turn right and left, back left as dc motor for fowards and back) . I pulled an H bridge chip from a motor drive expansion board and breadboarded it . For the most part to DC ...
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/eg-first-2nd-rev-bot