I can't quite wrap my head around the power requirements for a CNC setup i'm building.
I'm using 3 x Easydriver 4.4 for driving the Sparkfun Stepper Motors. I previously used a 22 V 800ma Power supply which blew up one of three of the easy drivers. Any explanation as to why ?
will a 12 volt 2A power supply be sufficient to power the entire setup or will it damage it?
I'm really new to this and would really appreciate your input.
Edit 1: Added link to the original easydriver page with correct data.
Best Answer
I have't looked at the datasheet for the driver chip on the Easydriver but Sparkfun website's blurb at the link you posted says that the Easydriver runs from 7 to 20V. That strongly suggests that your 22V supply is too high.
Your 12V 2A supply should work just fine but be aware that you may not get as much stepper speed as is possible.
If you plan to purchase more stepper drivers, I highly recommend TI’s DRV8825 driver chip. This is good for about 1.5A per phase without extra heatsinking and operates with a motor supply up to 45V. Pololu.com has them for a rational price Pololu.