Hi,
I have developed a brushed servomotor controller.
Maybe somebody is interested in it.
The inputs are step/direction signals.(you can use MACH2-3, KCAM4, etc.)
Maximum voltage: 90V
Maximum current: 20A
Selectable 2X and 4X quadrate encoder logic.
The main controller algorithm is a modified PID alg.
It has a PID controller manual and autotuning feature, full diagnostic via USB port and some other good features...
The price of the controller is hobby rated
If you are interested or have questions, write mail to: dubblecnc(at)gmail.com
Here's the picture of my controller:
The PCB only:
Download a short video of running servo, click here.