Hi Greg,Originally Posted by smartgsm
I've seen this, and planning to go ahead and build atleast one for the learning value. I'm at a bit of a disadvantage at the moment, not knowing assembler or C for the AVR but more than keen to learn.
I plan sticking with the AT90S2313 AVR, which I already have (I purchased a dev board from www.futurlec.com). I'm at the "Hello World" stage, managing to blink an LED.
As for the drive section, I'm looking at using a single IRF540 per leg of the H bridge generally as per the OSMC bridge, and incorporating the same protection, and driven by a HIP4081 FET driver.
I'm by know means an electronics whiz, I can follow a schematic, and read specs, and solder. Designing from scratch really is beyond me.
I understand that the ELM SMC3 is some what limited and has no current feedback, other than calculated which may not be ideal.
My interest in this is to eventually build 3 servo drivers for a converted X3 milling machine. For the moment, it will be run with stepper motors and a xylotex microstep drive.
If anyone else is interested, or made some advances, I would love to hear about it.
Pat