I ordered two of these kits, several months ago, and finally got around to assembling them. The kit is really awesome, and despite the few problems I had, would still definitely recommend this kit. My purpose for this review is mostly to let others know that the problem I ran into is solvable. There is a bug in the PCB board, where the phototransistor connected to positive voltage when it needs to be connected to ground. You can fix this by soldering the phototransistor to pads 3 and 5 of the programming header. Once I did this, it worked great! One was missing the IR phototransistor receiver, which I had some extras of from another project, so it wasn't a huge deal.