I have successfully connected a parallel port break out board to the stepper motor driver on my ScanTek 2000 (a re-branded Denford Micromill 2000) and have the 3 axis moving under Mach3 / LinuxCNC control.
I've posted a video explaining how I did it here:
https://www.youtube.com/watch?v=oJxEdeaLSbU
My website that includes all of the pinout information and photos is here:
https://www.summet.com/blog/2016/01/16/h ... s-control/
Hopefully this documentation will assist others.
Places where I could still use some more information:
1) Which pins on the 96 way connector are for each of the limit/home switches and ESTOP / front cover open switch?
2) Which pin on the 96 way connector should I apply a PWM signal to drive the spindle driver board?
[I have the baldor-eurocard-schematic-and-pinout.pdf file, so I think I could eventually figure this out, but if somebody already has it working I'd appreciate just knowing...]
Thanks,
Jay
HOWTO: Driver Stepper motors with parallel break out board
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- Posts: 13
- Joined: Sat 09 Jan , 2016 14:25 pm
- Hardware/Software: ScanTek 2000 ScanMill (Micromill 2000)
ScanTek 2000 ScanTurn (Microturn 2000)
Re: HOWTO: Driver Stepper motors with parallel break out boa
Update, I have gotten the home switches and estop switch working, you can see the full set of photos here:
https://www.summet.com/blog/2016/01/17/h ... es-e-stop/
Very briefly:
C26 - Home 0 (X axis). Parallel pin 10
B24 - Home 1 (Y axis). Parallel pin 11
C23 - Home 2 (Z axis). Parallel pin 12
A25 - (E-)STOP. Parallel pin 13.
If you ground C6 it enables the Spindle Go Relay (SGR), but I still don't know if there is a pin on the 96 way connector that you can PWM to control the NextMoveST SpindleOut (SOUT) 0-10 volt signal.
https://www.summet.com/blog/2016/01/17/h ... es-e-stop/
Very briefly:
C26 - Home 0 (X axis). Parallel pin 10
B24 - Home 1 (Y axis). Parallel pin 11
C23 - Home 2 (Z axis). Parallel pin 12
A25 - (E-)STOP. Parallel pin 13.
If you ground C6 it enables the Spindle Go Relay (SGR), but I still don't know if there is a pin on the 96 way connector that you can PWM to control the NextMoveST SpindleOut (SOUT) 0-10 volt signal.
-
- Posts: 13
- Joined: Sat 09 Jan , 2016 14:25 pm
- Hardware/Software: ScanTek 2000 ScanMill (Micromill 2000)
ScanTek 2000 ScanTurn (Microturn 2000)
Re: HOWTO: Driver Stepper motors with parallel break out boa
Update 2:
I've gotten PWM spindle motor speed control using the circuitry on the NextMoveST board (via the SOUT pin that is wired to the KB spindle motor controller).
Short answer: Solder a 200-220 ohm resistor to Pin 3 of the OptoIsolator (HCNW4503) and wire that to an output. (Active when low). Also remove surface mount resistor R29, which disconnects Pin3 from the original programmable timer/counter chip that used to drive it.
Longer answer with pictures and video is located here:
https://www.summet.com/blog/2016/01/29/h ... d-control/
https://www.youtube.com/watch?v=CFH58YUjX5U
Hope this helps others,
Jay
I've gotten PWM spindle motor speed control using the circuitry on the NextMoveST board (via the SOUT pin that is wired to the KB spindle motor controller).
Short answer: Solder a 200-220 ohm resistor to Pin 3 of the OptoIsolator (HCNW4503) and wire that to an output. (Active when low). Also remove surface mount resistor R29, which disconnects Pin3 from the original programmable timer/counter chip that used to drive it.
Longer answer with pictures and video is located here:
https://www.summet.com/blog/2016/01/29/h ... d-control/
https://www.youtube.com/watch?v=CFH58YUjX5U
Hope this helps others,
Jay