Micro controllers are great, but have you ever wanted to control something bigger then, lets say an LED? If you have, look no further (unless you want more then 0.6Amps for 4 channels, or 2.4Amps for 1 channel), unless you don't mind spending more money. This instructable will be all about building your own, preferably etched, driver shield for the Arduino. It's highly recommended to etch your shield, but not necessary, etching just makes it a lot neater. If you want to etch, but have never done it before, just follow this instructable, I'll made a few steps about etching the shield as well.
It seems like I can't upload any files other than pictures, so here's a link to my dropbox, original files included: http://www.dropbox.com/sh/ihua115tbmmy9h8/6tvqm0G5Ue
. The non-shield driver has been made with Diptrace, the shield driver with Fritzling.
This is my very first instructable, so well commented "criticism" is welcome.