New Machine Build- Need driver sugg. for my steppers (Pac Sci)

[lkasdorf]

I picked up a Dahlgren 24"x16" engraver, that I'm going to use as a basis for a CNC router.

These machines are 2.5 axis- the Z is an air solenoid that is either up or down. So, I'll want to install a real Z axis and stepper. I could use the existing motor, or use a trim router.

The electronics package that came with it seems to be useless (doesn't seem to be able to cause any movement at all).

I want to run something like Mach on a cheap computer, and get a suitable driver board that I control from the parallel port or USB

So, I want a suggestion for a suitable driver board. I can make the power supply out of stuff I have around mostly.

My steppers say:
Pacific Scientific
Powermax 1.8degree step motors
P22NRXB-LNN-NS-00
3.52 VDC unipolar
3.3 ADC unipolar
date: 95493041
40 degree centigrade operation

Money IS an issue, and I am a very experienced elec tech, so assembly/soldering is no problem.

[jalessi]

lkasdorf,

This is a very inexpensive solution.

http://www.hobbycnc.com/products/hob...er-board-kits/

It has 3 amp output which is close enough to the rated capacity of your motors.

A heat sink is required however it is not included in the kit.

Have fun.

Jeff...