Quote Originally Posted by boldford View Post
The BoB draws such a tiny current you can tap off a spare HDD (or similar) connector inside the PC.
I wouldn't take that route.? The drives are industrial grade and servo's are powerful beast's that unlike steppers tend not to stall when the shit hits the fan.!
For this reason things like limit switch's and E-stops become very important with servo's. They are sensitive to electrical noise and for this reason I wouldn't run any e-stop or limit switch's with 5V, instead using 24V which is more industry standard. So you'll need a 24V PSU so then I'd run the BOB from that, most decent bob's will run off 24V.