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From: andy p. <bod...@gm...> - 2011-07-03 12:51:50
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On 3 July 2011 13:34, Andrew <par...@gm...> wrote: > I'd prefer not to mess with homemade conversion, but 2 x 7i33TA = > $160, not so cheap. I missed the bit where you said you were connecting 6 motors. Visteurs has pointed out a more suitable card. > By the way, DMM Tech has optional SPI control for servo drives. I > wouldn't need that nasty pwm-to-analog conversion, if purchased those > drivers =( Maybe not, but you might end up putting the PID loop in the drive rather than in EMC2, and that's not the preferred way. (I would need to check the DMM docs to see if the SPI commands are position or velocity or torque) -- atp "Torque wrenches are for the obedience of fools and the guidance of wise men" |