I'm fairly new and still learning so please forgive me if this isn't the most technically correct wording or diagram.
I built a circuit to work with Arduino using PWM and a simple MOSFET. My motor is 7.4 amp stall current and about 1-2 amps running. It's running off a 12.4v Lipo pack.
However, I now need to support braking. I don't need to support reverse and so many of the drivers out there are h-bridges, and I gather I only need a half h-bridge.
On paper, a half h-bridge appears to be just two MOSFET transistors. I can control speed with PWM on one, or set it to low and short the motor with the 2nd MOSFET for braking.
However, my circuit doesn't work, and I'm not sure why. I read some things and I'm thinking maybe it's related to voltage difference on the gate. In my old circuit, the MOSFET was used on the negative line for the motor, but that won't work with a half h-bridge.