Changing motor direction via a mofset?

I know you can drive a dc motor via a mofset in one direction, but how would you make it so you can change directions?
I'm assuming you'd need two mofsets?
I'd purchase the L298N Dual H Bridge driver, if it weren't for the fact I'd have to order from china to remain in budget range, and I'm looking to get my project done in the next three days before I go back to school.

You could use a MOSFET for PWM, and a DPDT relay to reverse direction.

AWOL:
You could use a MOSFET for PWM, and a DPDT relay to reverse direction.

A solid state relay basically, correct?

No, a MOSFET and a DPDT relay

With N-channel MOSFET vs NPN for On/Off or PWM/speed control.

CrossRoads:
With N-channel MOSFET vs NPN for On/Off or PWM/speed control.

Hmm, I don't have what's required for those, so I guess I'll be making a trip to radioshack.
Driving 40+ miles for $6 in parts is kinda pointless though.

If you have a servo, you might make it rotate to touch the appropriate wires together.

zoomkat:
If you have a servo, you might make it rotate to touch the appropriate wires together.

I no longer have any servo's, as I donated some stuff to my school's robotics club so they could start without spending alot.

Hi,
What do you have in the junk/parts box?
You need basically to do an H-Bridge.
2 Nch MOSFETS logic level
2 Pch MOSFETS logic level
2 NPN low current transistors.
4 1N4001 or similar diodes.
Assorted resistors.

Tom.... :slight_smile: