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Author Topic: Breakout Board input, just a thought...  (Read 5035 times)

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Offline Davek0974

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Breakout Board input, just a thought...
« on: April 10, 2014, 02:42:24 AM »
It seems that the standard boards are limited to the 5 input lines on a LPT port, is it not possible to use these lines as a 5 bit word, that would give us 32 possible inputs (i think) but would need a little change or secondary add-on to the breakout board plus a decoder at the Mach3 end.

Just a thought, the breakout board end id simple as it can be a secondary encoder board connected to the standard input lines, Mach on the other hand I don't know about.
« Last Edit: April 10, 2014, 02:45:12 AM by Davek0974 »
Bridgeport Mill, Mach3 V062, CSMIO-IP/A controller, AC Servo Drives

Offline Hood

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Re: Breakout Board input, just a thought...
« Reply #1 on: April 10, 2014, 03:37:15 AM »
Get a second port or an external controller and you can have many more inputs.
Hood

Offline Davek0974

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Re: Breakout Board input, just a thought...
« Reply #2 on: April 10, 2014, 03:46:11 AM »
Ah but second port = two cables to the PC plus another BOB etc, external controller=£££

Just wondering :)
Bridgeport Mill, Mach3 V062, CSMIO-IP/A controller, AC Servo Drives

Offline Hood

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Re: Breakout Board input, just a thought...
« Reply #3 on: April 10, 2014, 05:10:09 AM »


Ah but second port = two cables to the PC plus another BOB etc, external controller=£££

Just wondering :)
Yes, but just remember where you started and how much extra things have cost so far by saving money at the start ;)
I certainly know when I started I bought  cheap and ended up having to buy further to get what I wanted, ie initial cheap stuff was crap and money wasted.

Hood

Offline Davek0974

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Re: Breakout Board input, just a thought...
« Reply #4 on: April 10, 2014, 05:18:42 AM »


Ah but second port = two cables to the PC plus another BOB etc, external controller=£££

Just wondering :)
Yes, but just remember where you started and how much extra things have cost so far by saving money at the start ;)
I certainly know when I started I bought  cheap and ended up having to buy further to get what I wanted, ie initial cheap stuff was crap and money wasted.

Hood

Of course, some you win some you lose :)
Bridgeport Mill, Mach3 V062, CSMIO-IP/A controller, AC Servo Drives

Offline stirling

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Re: Breakout Board input, just a thought...
« Reply #5 on: April 10, 2014, 06:27:26 AM »
There is a system out there (ironically enough) yet another THC that I believe does multiplex parallel port I/O in some way or another. To me it seems unnecessarily complex.

Offline Hood

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Re: Breakout Board input, just a thought...
« Reply #6 on: April 10, 2014, 06:40:33 AM »
I think the PMDX 126 BOB also does it but that would require you having to purchase another BOB so.....
Hood

Offline Davek0974

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Re: Breakout Board input, just a thought...
« Reply #7 on: April 10, 2014, 06:48:28 AM »
They do say there is no such thing as new idea :)
Bridgeport Mill, Mach3 V062, CSMIO-IP/A controller, AC Servo Drives