A new eccentric tappet for the pcb drill

The problem I have built a PCB drill that works nice most of the time, but sometimes it occurs that the stepper motor don't perform a full turn. This is caused by the friction of the eccentric tappet. I've simply made it out of a piece of steel...

Drilling PCBs the easy way

I've built a PCB drill that drills the holes from below through the PCB. Taking aim on to the solder pads will be done with a webcam. The start of a cycle is triggered with the help of a foot pedal, so that both hands can be used to fix …