Recently I purchased DRV8835 Dual Motor Driver Carrier and
Tamiya 70189 Mini Motor Low-Speed Gearbox (4-Speed) Kit.
The motor works when it was connected to two 1.5 V x 2 batteries.
However, when the gearbox was wired to the driver, and all of powers (motor and logic),
and PWM signal was applied, the motor didn't work.
In this case, what should I check?
the voltage between two pins for the motor batter was 3V and
that for the logic power was 5V.
Any comments and suggestions are appreciated.