The Arduino has been used for many purposes, and “shields” are available to make many common tasks easier. However, [Nick] wanted a stackable motor driver shield, so he build one himself!. ...

Next is the verified circuit diagram of the L9110 dual-motor driver module that I bought from RhydoLabz (India). Unlike most other DC motor driver modules, this module has a single VCC for both ...

A note here, adding 100Ω resistors in series with the arduino pins could help limit pin current if someone shorts the motor connections to either rail. UPDATE: There are some cheap motor driver boards ...