A cnc611 4 axis board can be used to control hot wire, foam cutting machines. There are several third parties software options to control such a machine, including, but not limited to: cenece.com, foamworks, mach3, emc2. And any other software outputting step and direction control signals on printer port. These software use PC internal clocks for their timing.

Popular software for foam cutting machines are gmfc and jedicut. These ones need an external, hardware clock, on pin 10 of printer port, to operate correctly. This kit of parts provides expantion of basic cnc611 functions, upgrading it with the timer needed by gfmc/jedicut.

A programmed PIC16F628A outputs 2kHz and 4kHz timer, injecting this signal on pin 10 of printer port. You may freely choose operating frequency via a jumper. You may also get rid of the timer function, and give standard general input functions to pin 10, when you're not using it for gmfc/jedicut.

This upgrade is mounted at no extra cost on cnc611, when purchasing together, and specifying "assembled" option. Or it comes as a parts kit, when ordered alone (without the cnc611) or when explicitly choosing "parts kit" option during checkout.