I am trying to make one H bridge for four identical motors. I do not want to make more than one H bridge by any means. I got a way to do that but I need your recommendation. I am going to make all the motors in parallel to each other so that the current, that comes from one branch in the H bridge, splits apart to all the four motors.
Specifications:
Each one of those four motors has the following features:
"Voltage:DC 6V
Current:120MA
Reduction rate:48:1
RPM (With tire):240
Motor Weight (g):50
Motor Size:70mm*22mm*18mm"
Purpose of use: Building a small robot that moves with 4 wheels.
Each wheel is with one motor.
Sounds a good idea? Tell me.
Best Answer
As a general concept I don't see any problems, as long as you don't expect the robot to move in a perfectly straight line. It may well be pretty good, but you seem to be aware of the problem of motor/wheel matching.
And I presume you are aware that the motors on the left side must be wired the reverse of the motors on the right.
When you graduate to differential steering, you will need 2 bridges. Get used to it. Actually, since you are talking about 4 motors I assume you have a 4-wheel vehicle with a motor on each wheel. Be aware that differential steering works very poorly on 4-wheel vehicles.