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Circuit Board Router [message #6537] Sat, 31 March 2012 11:07 Go to next message
Clif is currently offline  Clif
Messages: 893
Registered: March 2012
Senior Member
Hi Gang,

There is this old T-Tech Quick Circuit 5000: http://www.eugeneweb.com/gallery2/v/clif/Geeky/QC5000/
that needs some TLC. Maybe we can fix it up and get some cool PCBs out of it. Smile

Here are some links to what I know about it so far:

Manual: http://computing.cells.es/services/electronics/media/qcmanua l.pdf
http://www.satcam.com.au/downloadFiles/qc-circ2.pdf

Another hakerspace called MakeHackVoid started a project to upgrade theirs but it's stalled.
http://www.makehackvoid.com/group-projects/pcb-engraver

Before that they wrote a quick and dirty python script to convert G-code into the RS232 serial protocol that they reverse engineered by listening in on the schematic capture app -- router conversation:

https://github.com/projectgus/amc2500

I have fixed some minor things in one of those programs. More later on that.

Ciao!
Clif

...

Re: Circuit Board Router [message #6548 is a reply to message #6537] Sun, 01 April 2012 18:58 Go to previous messageGo to next message
Clif is currently offline  Clif
Messages: 893
Registered: March 2012
Senior Member
Hey Kassie,

It was fun working on that with you today. Here is the unmodified python code, its also available off of github in the link above. I happened to catch the MakeHackVoid guys online and here is what they said:

(18:13:29) wil5on: morning MrClif
(18:13:56) devdsp: woohoo!
(18:18:03) MrClif: Good Morning!
(18:19:18) MrClif: Hey, I was just wondering if you guys had any documentation on where the opto isolators are on the AMC2500 board, which is the controler for the circuit board router.
(18:19:59) devdsp: hmmm, I think EvilDeece might have a photo that he could label.
(18:20:39) MrClif: excelent! I took a photo of the board today but haven't uploaded it yet.
(18:22:25) projectgus: MrClif: you should be able to pick the layout from the EAGLE schematics that EvilDeece uploaded here http://www.makehackvoid.com/group-projects/pcb-engraver
(18:22:39) projectgus: if you can view EAGLE, I think he duplicated the isolator layout to make "dummy" headers that plugged inover the top
(18:
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Re: Circuit Board Router [message #6555 is a reply to message #6537] Mon, 02 April 2012 11:08 Go to previous message
Clif is currently offline  Clif
Messages: 893
Registered: March 2012
Senior Member
Not sure, but I was already leaning that way. ;-) If you read between
the lines they sorta say that there is a problem with their
understanding of the serial protocol, but let me know what you think
they said.

The control cable has DB37 connectors though there are probably a lot of
power and ground pins. The main power supply is 36V 4.2A and the
controlor board has a LM2576 5V switching regulator for logic. The two
GS-200S easy power modules are the integrated stepper motor drivers.
There are 4 bits of control that are opto-isolated (TLP621-4) for each
stepper that presumably go to the GS-200s. There are at least 4
non-isolated limit switch inputs back. The MCU is a Motorola MC68332. Of
course then there are the head up/down, spindle, switched AC and relay
outputs to trace down. The MHV guys have some eagle schematics on their
blog but you have to install eagle to view them, not too hard though
there is not much there to look at, oh well...

Clif

Kassandra Kaplan wrote:
> yup I got it.
...

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