[ckirchen]

I decided to make a batch of breakout boards during my mill conversion. The ones I didn't use are for sale.

More details at: http://www.rammspeed.com/karvemachine

Chris Kirchen

[Chunky]

What is a breakout board? (I'm not being sarcastic)

[ger21]

What is a breakout board? (I'm not being sarcastic)

A board that usually plugs into the parallel port and usually has connections for stepper drives, home and limit switches, and relays. It makes it easier to wire everything up to the computer.

[zoltan]

hi,

Your link doesn't work. Is there a mistake?

[ckirchen]

I changed servers a while ago and the landing page had to change. It's http://www.rammspeed.com/karvemachine/index.htm.

Chris Kirchen

[zoltan]

Are you going to share with us the schematics for those who will prefer to build it by themselves?

[ckirchen]

> Are you going to share with us the schematics for those who will prefer to build it by themselves?

Sure. Considering the amount of other peoples knowledge I drew on when I built my machine, I'd be happy to reciprocate.

I'll post the schematic on my site (www.rammspeed.com/karvemachine/index.htm) sometime during the weekend.

Chris Kirchen

[zoltan]

I have not seen yet your board on your site.

[eldata]

"When a servo is powered up, it jumps"

Not always. Depends on the servo drive circuit and interface electronics.

[ckirchen]

The schematic is up: http://www.rammspeed.com/karvemachin..._schematic.pdf

I couldn't find the file on my computer (must have lost it when I upgraded to XP), so I had to recreate it.

[ckirchen]

"When a servo is powered up, it jumps"

Not always. Depends on the servo drive circuit and interface electronics.

True. I should correct that to read: "On some machines, the servos jump when they are powered up".

My machine does it. So does a friend's Maho with glass scales--when you power up the drives, the DRO shows the drives correcting themselves.

But, I've seen others machines since then that don't do it.

[bigal]

sorry to ressurect an old thread, but why have all the lines got pullup resistors on them? are they neccicary and will they work on active low systems as well as active high systems?

thanks
Alex.