Breakout Board

[croy]

Hi to all,

 I am looking to make a breakout board with full opto-isolation on Outputs and Inputs as well as 2x dedicated 10A relays.

 The uses will be able to select from a further combination of;
 a) 2 out of 3 comprising 1x 10A relay, Charge pump and 0-10V for Spindle control.
 b) Channel Y Step and Dir or Y Step and Relay no4 (10A relay)


 i believe this board will adequatly cover Lathe and Milling use.

Your comments, recommendations and interest would be most welcome.

[Tweakie.CNC]

Hi Croy,

There are an awful lot of BoB's already available and here are just a few  http://www.cnc4pc.com/Store/osc/index.php?cPath=33&osCsid=879b109464028d53cd1fc711623e996a

But - there is always room for another so good fortune with your project and I look forward to seeing the pictures of your prototype etc.

Tweakie.

[rrc1962]

Here's another one that fits your specs pretty well.  We use the 122 and love it.  If you're talking about putting optos on the step/dir outputs, that's not necessary.  Any drive worth buying will already have optos on the step/dir inputs.

[croy]

can you give me a ling to the site for the 122?

[rrc1962]

Sorry...I copied it but forgot to post it....122 is on the same site...

http://www.pmdx.com/PMDX-126

[Hood]

PMDX are my choice of BOB, never heard of an issue with them and the quality is very good
Hood

[croy]

Hi,
i nice design, but my board is a lot simpler, but ot cheep design. It was derived from my need for a low cost reliable board with the features i need for my Lathe conversion.

i estimate my board will cost less than half the cost of the 122 and still have the features i mentioned in my first post.

If people have ideas they would like to see incorporated, now is the time to speak.

[rrc1962]

All the features of the 126 for the price of the 122 would be great.  The 126 has some nice features, but the 122 does what we need it to do. 

[croy]

Point taken and i may well follow up with this as a second board.

My first board is a simple discrete compoent board, I may if interest is there go down the route of a more featured design. right now I am trying to avoid coding micro-controllers or fpga's.

[Hood]

For me 24v I/O capability is the way forward, maybe not such a concern for hobby type machines but for more industrial end machines its a must I would say. Then again more and more of the external controllers are having 24v I/O on them so no need for a BOB and thus maybe it will just be the lower end hobby type machines that will be using BOBs.

Hood