What he said. Also, you don't need a board for each axis. Most of the boards you mention are 3 axis boards.
I think you are asking too much of any of those boards if you want a high torque motor to run at 900 rpm. You will need to save your money and go with gecko or rulex boards. I would drive servo's, so you get constant torque over the speed envelope.
If you can live with 400- 500 rpm, driving 100 -150 oz steppers, go with the xylotex board and a 24 or 36 volt powersupply.
Eric
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I wish it wouldn't crash. |