Fingers crossed it'll cut ally

[blackburn mark]

Maybe open up your servo tester and take a picture...

dont know if you will make any sense out of these... its just a magic box to me

i do have a mulimeter but the pc with mach on it is in bits ready to go in my base but i will take you up on the offer of help when i get to that point in the build, iv only had a quick play with mach up to now.

iv just orderd a "MICRO MAESTRO 6-CH USB SERVO CONTROLLER ASSEMBLED" £12 ebay
im not sure if it will solve our mach spindle problem but i thought id give it a punt

im hoping mach will know what to do with it :question:

[blackburn mark]

micro maestro 6-ch usb servo controller

[Jonathan]

Ok disregard that, just had another look. It should be simple to get the servo tester connected.

:idea: Here's a step by step guide.

1. Remove the potentiometer, or just desolder the pin connected to R32.
2. Solder a wire to the pin of R32 that was connected to the potentiometer.
3. Connect the other end of that wire to the chosen output pin on the parallel port...say pin 14.
4. Solder a wire to the negative of the circuit board, e.g. pin labled '-' on connector JIN, and connect it to any ground pin on the parallel port.
5. Set PWM frequency in mach3 to something high, like 1000.
6. Under Config-->Spindle Pulleys set max speed to the max RPM of your motor.
7. Cross fingers...it should work as normal with the rpm show in mach3 corresponding correctly.