need help controling dc motors
im going to be making a robotic arm for my wheelchair to lift and hold my tablet pc. im going to be using 4 mg996r servo motors moded to be geard dc motors. i own a (owi robotic arm edge robot) im hoping to use the pc board out of it to control the 4 motors forward and backwards,but i cant seam to figur out how to hook up a 6v acdc adapter to it to do so. here are pic of the edge robot schematics and a link to the manual (pdf) if anyone can help or know a easer way to control 4 motors both ways and not with arduino as i dont know enuff about them yet.
edge robot manual pdf