24V PSU + 7809/7812?

Attached is a diagram of what I want to try to do...

  • 24V Wall Wart
  • Connected to 7812 voltage regulator
  • 24V fed straight into an Easy Driver board (I'm actually using a Big Easy Driver, but couldn't find a fritzing part)
  • Output of the 7812 to Vin on Arduino
  • GND of PSU, 7812, Easy Driver and Arduino all connected
  • Additional Arduino pins for step & dir
  • Easy Driver connections to bipolar stepper motor (not shown)

For simplicity sake will this approach work?

Heke -- I didn't know about DC-DC converters. If the above approach won't work I'll get one of those.

Thanks.

Uno-BED-78xx.pdf (776 KB)