USB IO module

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08 Jan 2019 03:31 #123746 by crowloy
USB IO module was created by crowloy
Anyone ever find out a source for the USB IO module that Tormach uses? So far I've only found one that's similar and it might be possible to make it work, but it's a definite might.

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08 Jan 2019 05:21 #123748 by smgvbest
Replied by smgvbest on topic USB IO module
Looking at how PP communicates with the board there are Tormach specific strings in it.

I would tend to believe that the board is either custom tormach or a commercial board that has been customized by Tormach.

it send the command VE and gets back two values, r and data, data contains the "Tormach I/O"

this is contained in the usbio.py file

A bit of recoding in the usbio.py probably could make this work with other boards.

the other thing you can do is you can map in the hal file I/O directly. i did this for 4 outputs as a test

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08 Jan 2019 15:53 #123781 by sharmstr
Replied by sharmstr on topic USB IO module
At one time (last year) the IO module was a CP2102 with 4 relays attached.

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23 Jan 2019 23:23 #124692 by jwatte
Replied by jwatte on topic USB IO module
It's a CP2102, a microcontroller, and four relays (output) plus four optocouplers (inputs) plus an ID selector.

If you're comfortable rolling your own, I reverse-engineered the protocol, and wrote firmware for the Teensy 3.2/3.5 microcontroller (Arduino-like but harder/better/faster/stronger) that emulates the USB I/O: github.com/jwatte/teensy_tormach_usbio

It can also be used on an Arduino Leonardo with minor changes, I've heard, but it doesn't work well on a "plain" Arduino because the serial bootloader gets in the way of properly detecting the board.
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24 Jan 2019 12:39 #124731 by crowloy
Replied by crowloy on topic USB IO module
thank you for this. I figured that someone probably had done this before. I was going to eventually look into this myself, but this works too.

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25 Feb 2019 06:25 - 25 Feb 2019 07:46 #127084 by Contract_Pilot
Replied by Contract_Pilot on topic USB IO module
I seen this on youtube..




Found the board in the video on amazon..

www.amazon.com/gp/product/B07DGPT293
Last edit: 25 Feb 2019 07:46 by Contract_Pilot.
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25 Feb 2019 09:15 #127093 by smgvbest
Replied by smgvbest on topic USB IO module
I saw that also and I have 3 of those boards, they are decent boards.
my concern with this is he's looking to sell these. my hope is he's designing his own board and not using this on. basically, relying on someone else who could stop production at anytime is usually not a good thing.

I wish him luck and it appears to work well.

I've played with the teensy code and find it ok but has some quirks and of course you have to add your own relays and input protection to teensy.

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25 Feb 2019 12:05 #127101 by Contract_Pilot
Replied by Contract_Pilot on topic USB IO module
Seen a post on the zone looks like he shelved the project due to MCU change on the board.

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26 Feb 2019 00:42 #127135 by smgvbest
Replied by smgvbest on topic USB IO module
Yeh, that's why you don't based offerings on other hardware, you have no control.
and one of these type of boards is not that hard to design.

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