After completing my short c-beam z-axis with 500w spindle I discovered the possibility to have the speed of spindle controlled by g-code. (S commands)
From the hardware side it’s fairy simple unless I’ve overlooked something.
My spindle power supply has a potentiometer and a ‘speed input’ 0-10V DC.
With a PWM-to-voltage module like this https://www.amazon.com/KNACRO-voltage-module-converted-voltage/dp/B06XB6J4FV/ref=cm_cr_arp_d_pl_foot_top?ie=UTF8 I should be able to adjust the speed via the arduino.
- do we have a free pin that does PWM
- how much effort is it to implement