Driver wiring advice needed...

[Wal]

Cheers Jonathan.

Hmm, so nothing connects to the PUL-/DIR- pins on the driver...?

>Make sure you set the step outputs in software to active low.

How can you be sure that this is the case? Would this not be entirely specific to what pulses my parallel port is sending..?

Oh yeah - PM me your PayPal details for the spindle mounts, man!

Wal.

[Jonathan]

Cheers Jonathan.

Hmm, so nothing connects to the PUL-/DIR- pins on the driver...?

They go to ground.

>Make sure you set the step outputs in software to active low.

How can you be sure that this is the case? Would this not be entirely specific to what pulses my parallel port is sending..?

With this setup, when the parallel port output is low the output of the breakout board is 'open', so the driver pin will be pulled high. It's therefore inverted, hence the parallel port needs inverting to restore normality.

[ruffle]

This thread is handy.... a large package arrived today with some DQ860MAs and a DB25-1205 BOB

No documentation of course :) The BOB has jumpers and I've no idea what they do. I'll email the supplier and see if there's any info.

Wal - please update this thread as you go; I'll be one step behind you.

[ruffle]

Found this:

http://www.nbglin.com/download/cnc25...g63R68R-Yj4h1A

which 'documents' the BOB. It's in terrible chinglish (although better than my Mandarin!). Changing jumpers J1&J2 changes from single to double power supply.

One picture shows VCC, VSS, GND and VDD for the power connector and the other one POWER+5V, POWER-GND, DB25-GND and DB25-VDD for the same connector.

Huh? Now I'm confused. Does this make sense to anyone?