In case you don't know, a pinewood derby where kids build a car out of a block of wood, add some nails for axles and plastic wheels and then race them head-to-head on a length of track with an ...

The electronics for [ilektronix]’s build ... keeps the car from popping a wheelie when it is released from the starting line. You can check out a video summary of the pinewood derby competition ...

Today’s derby is decidedly high tech though, and we were impressed with this car scale that also figures ... If you’d rather build something for the actual race, why not a photo finish system?