I bought a LMD18200T H-Bridge but do not understand how to manage the connections from an Arduino. I am using an Arduino Wee which runs at3.3V and offers digital output and PWM.
What are the minimum required connections for this H-Bridge?The following seems straightforward:
Pin 2: Output 1 -> voltmeter (eventually to DC motor) Pin 10: Output 2 -> voltmeter (eventually to DC motor) Pin 6: PWR Supply -> 8V power supply Pin 7: Ground -> Ground from power supply Pin 3: Direction Input -> Arduino digital output HIGH
I also tried:
Pin 4: Brake -> digital LOW Pin 5: PWM Input -> Arduino analog output (value 255)
I didn't do anything with the "Bootstrap" pins.
One part I don't understand is the PWM Input. Is that required? Is3.3V sufficient?
Any clarity you can lend to this would be appreciated. I was not able to find anyone documenting this H-Bridge wiring to an Arduino.
Thanks, Damien (U. Penn, Philadelphia)