Custom-Shape Motor Driver with DRV8833, Direct Motor Mount

Challenge: Motor driver for a handheld medical actuator where the board has to follow the enclosure contour and the motor mounts directly to the PCB assembly. No room for a separate driver module. Solution: Custom-shaped PCB built around the DRV8833 dual H-bridge. A magnetic Hall sensor on the board provides closed-loop speed feedback from the motor shaft. Board outline matches the enclosure geometry so it drops into the housing and the motor shaft aligns with the mechanical assembly. Results: The Hall feedback loop maintains consistent actuation speed across varying load conditions and battery voltage. Smooth, repeatable motion with no stalling.