Anyone know where I can find a sample schematic for a serial interface? I just want to grab some data that I send out the serial port and manipulate it. I basically need a test rig to better understand how to interface with the serial port. I am writting a cnc driver that will work off a serial port (usb or serial). I would like to make or find a cheap way of taking serial position/step data and convert it to step direction pulses to drive a gecko or xylotex board. I have found some ready made boards like the simplestep, but they are around $200-$250. I am trying to see if I can make a cheaper interface. Anyone know of one, or interested in this type of thing?
thanks,
mw
www.bigbearcnc.com