Auto dc moter reversing circuit
Need to automatic reverse 12v dc motor.
Application is a shuttle in a saw mill model moving back and forth, driven by a lead screw :idea:
Re: Auto dc moter reversing circuit
Simplest way is to use microswitches operating a changeover relay.Originally Posted by Bill Rice
I've heard that an H-bridge is good for this. I put "h bridge dc motor" in Google and this site came up - http://www.robotroom.com/HBridge.html
The bridge accomplishes the same things as the relay. I can be constructed from discrete parts out of a junk box.
Alternatives to the microswitch are magnet/reed relay, photocell or similar devices.
Sounds like a fun project - good luck.
stevez
I highly recommend that site mentioned above btw for any robot fans... David Cooks book I think was seriously one of the best Ive read (for a newcomer like myself) into all aspects of robotics, plus as you can see, he knows a thing or two about electronics too.
Use L293 Dual H-Bridge Driver Chip. Handles 1A current and is very easy to interface with logic circuit.
"There is no way to peace, peace is the way!"
Aaargh, you guys think all too complicated. Get a windscreen wiper motor, it reverses all by itself
Klaus
Actually the windshield wiper motor spins like any other motor. It uses an arm with a ball on the end and some other linkage to move the wipers back and forth.
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