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CNC Circuit Boards for My CNC Router Table Mad Mod

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Bernd:

--- Quote from: Gadget on May 10, 2010, 07:21:11 PM ---I bought a kit from Hobbycnc.com, it's optoisolated.

--- End quote ---


HobbyCNC dosen't state in their write up as to using opto's. The Pro board has patented chip protection. I don't know what they mean by that. But if they do use opto's that's great. Like I said I've done a bit more surfing and found that some use it on their high end boards.

Bernd

Gadget:
I'll double check my documentation. You are right, I don't see anything about isolation. Must have been the torch relay I was thinking about.

Bernd:
Like I said I've come across board suppliers have different levels of boards they sell. For example CNC4PC has 14 break out boards. The higher end has optoisolated inputs from the computer printer port. Here's their web site: CNC4PC. Check out their 14 break out boards they sell.

Bernd

Gadget:
Have you looked at candcnc.com They have a UBOB that looks like it will do a lot and is isolated. Here are the specs;

Single cable solution
8 High speed outputs for S&D .  8  Low speed  for general extrernal control.  Open collector buffered outputs for Up to 6 relays.
9 Fast Inputs for Homes, Limits, Probes, External sensors, etc.
Charge Pump output
Charge pump indicator
Plugs directly into our MTA100 for interface to various motor driver options.
Plugs directly into our new EZPlug250-5 card for up to 4 axis of tabletop stepper control
Plugs directly to our Table I/O card (see below)
Provides clean, buffered (full 5V TTL logic) signals for Step and Direction
Board mounted DB25 uses ONE standard M-F Computer cable
Board mounted serial port (DB9) for pass through communications to our other Smart cards
Expandable to use our low cost Port 2 card (Even MORE I/O) and our popular MPG101B Hand controller
Feature Expansion Plug for Digital Torch Height Controller and Isolated Spindle Speed Controller
Compact SMT design minimizes mounting footprint to 2.75 X 5.0 sqr inches
Uses external +5 and +12 supply (+12 must be isolated with a separate ground).
Pricing with Optional 3 output power module (third isolated supply will drive up to 100ma for other features to be announced) is less than most other single powered/isolated BOB's
Comes with  25 pin expansion cable for external I/O  (to Remote Table I/O card )

Bernd:
Got the link safley stored in my favorites. Looks like quite an impressive source for boards.

Will have to go through their site later when I have more time.

Thanks for that link BTW, appreciate it.

Bernd

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