Hey guys, I was looking around and couldn't really find any PID controllers that were very high current/voltage.
I am building a 3-axis CNC machine and I want to be able to vary/regulate my router RPM. There is a product called Super PID which has a few videos on youtube and a website www.superpid.com. That is basically exactly what I am looking for except I don't wanna $155 on it. I have done PID control before but with 12V CPU fans and a 5V thermistor. So I was wondering what type of things do I have to consider when dealing with a 2-1/4HP 11Amp 220V router? I have a Hitachi m12vc, Currently it has a switch which regulates the rpm from 8000 RPM to 24,000 RPM. I'd like to be able to go down to 5000 RPM such as the SuperPID.
Also I was wondering what would be the best method for measuring the router RPM, I was thinking of using an optical sensor and a some white paint on the spindle head would work?
Okay well let me know if I missed anything, I am using a Arduino UNO with GRBL installed but i could use an external PID controller which I would set manually instead of via gcode.