MEGA BREAD - NPN H-BRIDGE
A easy to build and use H-Bridge for DC motors. Uses 4 NPN type PN2222A standard transistors
We are using this module on a 7.4 volt system, tested working on 5 and 3.3 volt systems also.
Trigger inputs cannot be a PWM source for speed control. Add a NPN switch to the Negative return to use for PWM.
The Ground of this unit should be connected to the common project ground.