BUZZ TRACE NERVE MACHINE
As seen on the 3dFilaprint stand at the TCT NEC event 2015
For the trace, I used Proto pasta conductive PLA. A 10 metre sample supplied by 3dFilaprint Globalfsd is sufficient for the trace , hook and lead if low density infil is used. This still results in a end to end resistance of about 8 k ohms. I used either a darlington transistor pair or arduino input with 680k ohm pullup and a piezo buzzer.
The parts require a bed of 350mm x 250mm