Answered Video Guide: Electrical System

Great video, but a few points to consider. Drivers are heatsinked from the bottom, what you should see directly under the driver chip on the bottom side of the driver board is something that looks like a square solder pad with 9 - 15 holes that are solder filled. If they are built that way then you have a properly heatsinked driver chip that uses the PC board to sink the chips. Putting heatsinks on top of the chip could actually lead to damaging them, usually not, but the possibility exists. Putting a fan that blows across the board is a better solution than those little heat sinks.


Great idea to label all the wiring with little wire flags, I did that with every wire on my Robo. Makes rewiring or diagnosing wire issues much easier. Personally I use one of these, but any adhesive labels will do .


Marking pin 1 on the steppers is also a good idea. They can be inserted either way, and it would take a novice forever to figure out why a particular motor spins backwards.