# CNC FPGA This is the board I designed to interface a PC running Linux and [EMC2](http://linuxcnc.org) with the [Industrial Hobbies](http://www.ihcnc.com/) milling machine I converted to servo-based CNC operation. It is compatible with the [Pluto-P](http://www.knjn.com/FPGA-Parallel.html) [servo driver](http://linuxcnc.org/docs/html/drivers_pluto_p.html) in EMC2. ## Features ## ### User View ### * 25-pin male D-shell connector in parallel with 26-pin box header for connection to PC parallel port * 4 15-pin female D-shell connectors for servo channels * 9-pin female D-shell connector for misc signals * barrel connector for 9-12 volt DC power input * dual-color LED, green when PC heartbeat present, red when not * green LEDs on each of the three power supply rails * RC low-pass filtering on all input pins * 5.1 x 2.5 inch 4-layer board ### Developer View ### * Hardware Features * [Altera](http://altera.com) ACEX EP1K10TC100 FPGA * [Atmel ATtiny10](http://www.atmel.com/dyn/products/product_card.asp?part_id=4558) for heartbeat detector * Tools Used * [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout * Licenses * The hardware is licensed under the [TAPR](http://www.tapr.org) [Open Hardware License](http://www.tapr.org/ohl.html) ## Artifacts ## The design files can be found on [git.gag.com](http://git.gag.com) in the project [hw/cncfpga](http://git.gag.com/?p=hw/cncfpga;a=summary). ## Future Plans ## As of December 2011, version 0.1 is out for circuit board fabrication.