Reading a punched card

A project log for RelayRepRap

This project is about exploring whether it is possible to make a RepRap control system that can be made by a RepRap.

will.stevenswill.stevens 09/27/2016 at 23:010 Comments

Copper nails are used as brushes and contacts. These have a lower contact resistance than the galvanized iron nails used previously. The mechanism is not reliable enough yet - it advances correctly, but sometimes a brush does not make good contact - I hope that this can be improved by weighting the ends of the nails that act as brushes to give a larger contact force.