When testing power supplies or other circuits that deal with higher current loads, it can be convenient to have a dummy load - a device that can sink a pre-set amount of current. This can then simulate using the device under test in the real world - however commercial units can be expensive.
However thanks to Instructables member wigman27 you can not only build your own load but also delve into some interesting and very well explained theory behind the electronics, design principles and more about the project.
It's certainly a neat project, and somthing for the more advanced hobbyist to consider, so visit the project page to get started. And for more, we're on facebook, Google+, and twitter - so follow us for news and product updates as well.