Papilio wing: DC print head controller

Controls printers that use linear encoders (DC motors, not steppers). Will eventually be a cnc controller. VHDL source and Eagle PCB files are at https://github.com/debreuil/printers2cnc Uses a TA7291P for bidirectional control of the DC motor. Homemade PCB, used laser printer, laminator, and thin copper clad : http://www.goldmine-elec-products.com/prodinfo.asp?number=G17455 Uses a Papilio, truly wonderful low cost FPGA board http://papilio.cc/