Hi
When i checked supply voltage across printer port pins they are very small like 3.5v & some times 0.42v.
I am using computer of Intel P2 (2.4Ghz processor , 512 RAM DDR)
regards
manoj
I take it you are using a lead from the printer port. I used an old printer cable which I then cut in two. I identified all the pins with each wire and soldered the 25 wires in order 1 - 25 onto a small piece of copper clad strip board.
If you look in Config/Ports and Pins/Motor Output, you can then specify which pins you want the signal to come out of. These are usually 2 and 3, 4 and 5, 6 and 7 for the first three motors. Do not forget to specify Port 1 in the ports column.
You can test if there is any signal on the pins by connecting a TTL/Cmos logic probe to each pin and trying to jog ( without any cards or anything connected). Pins 2,3,4,5,6,7,8, and 9 are the eight outputs used in the stepper motor page. Pins 10,11,12,13 and 15 are inputs. Pins 1,14,16 and 17 are the other four outputs. Pins 18 to 25 are signal ground - and you will need to connect at least one of these to be able to read the port.
You should get a "pulse" reading on the logic probe if a signal is being output.
You can test your cards simply by tapping a positive or negative wire on the "step" input - the motor attached to the driver should react even if it is only a small movement.
If you are getting some signal out on your printer wire, and your cards are giving some signal to the motor, connect up the wired as you have specified in "ports and pins" and it should work.
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