I've been reading this forum for a long time and finally am going to try my hand at converting a small CNC mill. I've decided on a PM-25MV, Arizonavideo's kit, LinuxCNC, ASRock Q1900B motherboard with built-in parallel port (Amazon has some old stock), and Keling motors and drivers from Automation Technologies.
My question has to do with the Keling drivers. I've narrowed the choices down to two packages from Automation Technologies. Both have Nema 23 570 oz/in motors for the X and Y axes, but one has a 906 oz/in motor for the Z axis and the other has a 1200 oz/in motor. I'm not sure how much difference this extra torque makes, but the more expensive package also has some upgraded "32 bit DSP based" drivers -- KL-8070D vs KL-8060 and KL-5056E vs KL-5056.
Does anyone know if the new drivers are actually better, or are the bugs still being worked out? Are they (plus a larger motor) worth an extra $110?
Which Keling Drivers for PM-25MV ?
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