Hi blimpyway,Thank you for your reply. The H-bridge modules look like a good compromise with the advantage that they are prebuilt and won't test my soldering skills. I looked at the L9110S modules and also the L298N which maybe better as it has a larger voltage range. I'm thinking that if I use for example the output OA1 to the load, then the other side of the load to ground the voltage drop will be less than 1 volt? Plus it would give me 4 channels?