[microdot]

I'm building a rotary table for a laser scanning rig that will be controlled by step and direction signals sent from an Arduino. The objects that will be positioned on the table are fairly large and can weigh as much as 35lbs. I was going to use a 720oz/in NEMA34 stepper with a 4:1 belt reduction that I already have. What I need to buy are the stepper drive and a power supply for which it looks like a Gecko 201 would do the trick. Can someone point me to a vendor that might sell an inexpensive power supply for only one Gecko? What is it I need?

Thanks

[cgo]

Something like this may work SE-350-48 - Mean Well - TRC Electronics

Or if you like linear supplies then something like this PS-3N44 - 300W 44V Power Supply - AnTek Products Corp

I always give a little tolerance to manufacturers ratings, so find the motor amp rating and add approximately ~one amp per motor extra for the power supply.

Heres a handy calculator for steppers to find speed and torque, also look at geckos page for good info. Stepper Motor Calculator