I have a thunder laser y stepper driver is set to 5000 pulses/rotation. (factor setting)
PiBurn Rotary motor is set to 8000 step/rot and PiBurn Chuck motor is set to 4000 step/rot. (factory settings)
Lightburn: in machine settings rotary parameters is set to 4000 pulse/rot.
I discovered today that using the chuck: i set lightburn rotary settings to 4000 spr and a object diameter of 3in … lightburn calculates the circumference to 9.4 in but actual measured circumference is 10.75in
PI Burn chuck gear ratio for thunderlaser is 3.0x
What setting is incorrect? What should I look for? Thank you for your help
Not really follow what you’re up to… See if this link helps and double check the PiBurn rotary, mine is 2.5:1
With more research, I have discovered that the driver steps should match the motor steps (1:1)… Then do the math for the chuck rotary steps.
Does this sound correct?
Yes, use the driver to find the steps/rotation.
If your motor is not direct drive, you have to multiply the steps/rotation by the ratio. That will give you the proper step/rotation for the rotary setup.
My PiBurn on the co2 … the motor driver is 2000 steps/rotation, then times the 2.5 ration makes 5000 steps/rotation for a value in Lightburn rotary setup.
If you’re PiBurn has a 3:1 ratio, then it would be 2000 steps/rotation times the ratio of 3 or 6000 steps/rotation.
Make sense?
The math makes sense. Confusion on what to set on stepper motor.
Y driver on laser is set to 5000 spr
Roller Motor: is currently set to 8000 - i need to change to 5000 since it 1:1 ratio
Grip: is currently set to 4000spr - need to change to motor step value * gear ratio to = 5000 spr to match the driver
is this correct? Or do I need to ignore the laser driver and set only the roller motors to the appropriate values to make 1 complete revolution.
Are these the same motors? In other words do you just change the basic hardware to drive a chuck? Or is it as I suspect, a whole different machine?
Check the placard of the motors and see how close they are, size (NEMA) and current if labeled.
Maybe, thinking of a more simply way, like I do mine, but need to know about the motors.
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