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Thread
2010-02-11 by ross b
2010-02-12 by James
>Assuming this is a Chinese thing, you won't find a schematic unless somebody reverse engineered one, and even then, yours might be different internally.
> Hi All:
> I would like to modify my GBC H-65 laminator, does anyone have or know where to find the wiring schematic, a google search turned up nothing,any help is appreciated
>
> Thanks Ross Bell
>
2010-02-12 by sailingto
--- In Homebrew_PCBs@yahoogroups.com, "James" <jamesrsweet@...> wrote:
>
>
>
> --- In Homebrew_PCBs@yahoogroups.com, "ross b" <rossbell@> wrote:
> >
> > Hi All:
> > I would like to modify my GBC H-65 laminator, does anyone have or know where to find the wiring schematic, a google search turned up nothing,any help is appreciated
> >
> > Thanks Ross Bell
> >
>
>
> Assuming this is a Chinese thing, you won't find a schematic unless somebody reverse engineered one, and even then, yours might be different internally.
>
> When I modified my Scotch laminator it was trivial to figure out enough of how it worked to do what I needed to do. Open it up and have a look.
>
2010-02-12 by Roger Blair
2010-02-12 by Roger Blair
2010-02-12 by sailingto
--- In Homebrew_PCBs@yahoogroups.com, "Roger Blair" <Roger.Blair@...> wrote:
>
> Oops,
>
> I forgot that this group doesn't do attachments. I forwarded it to Ross's personal address. If anyone else wishes, I can post it to
> photos.
>
> Roger
2010-02-12 by Roger Blair
--- In Homebrew_PCBs@yahoogroups.com <mailto:Homebrew_PCBs%40yahoogroups.com> , "Roger Blair" <Roger.Blair@...> wrote:
>
> Oops,
>
> I forgot that this group doesn't do attachments. I forwarded it to Ross's personal address. If anyone else wishes, I can post it
to
> photos.
>
> Roger
[Non-text portions of this message have been removed]
2010-02-12 by sailingto
> When approved, it should show up here:
>
> http://groups.yahoo.com/group/Homebrew_PCBs/photos/album/1587588139/pic/list
>
> Regards,
>
> Roger
2010-02-12 by sailingto
2010-02-12 by Roger Blair
>>> I used AutoTRAX DEX for the schematic, and used screen capture to get the .jpg. I'll email that to your personal address. <<<2nd - where/how did you get the temperature ratings of the thermal switches? By testing? OR did your switches have the value on
>>> Those values are really meaningless; that was a first shot at figuring out what I had, and used an IR temp probe to 'see' intothe top vents to get those values which represent an averaging of the readings. Since then I found that I could 'see' the rollers
>>> I am looking for the most simple variable control circuit to do that, haven't found anything DIY suitable yet; I haven't gotteninto programmable stuff yet. Can you elaborate some on the ATmega bit?<<<
> When approved, it should show up here:[Non-text portions of this message have been removed]
>
> http://groups.yahoo.com/group/Homebrew_PCBs/photos/album/1587588139/pic/list
>
> Regards,
>
> Roger_
2010-02-12 by Roger Blair
2010-02-12 by sailingto
2010-02-13 by saposoft
2010-02-13 by Stefan Trethan
On Sat, Feb 13, 2010 at 8:54 AM, saposoft <sapoliste@...> wrote:
> There is a cheaper and easier solution than an Arduino and IC temp sensor, if you look back in the archives of the group you can find a few solution for tempo control cheap and easy to DIY.
> mine is located here
> http://sites.google.com/site/elettronicaarduinoesperimenti/Home/thermostat-with-ua-741
> You need a thermometer for the first calibration, but once you do this it will work like a charm, I'm using it for my laminator.
> have fun
> Sapo
2010-02-13 by sailingto
--- In Homebrew_PCBs@yahoogroups.com, "saposoft" <sapoliste@...> wrote:
>
> There is a cheaper and easier solution than an Arduino and IC temp sensor, if you look back in the archives of the group you can find a few solution for tempo control cheap and easy to DIY.
> mine is located here
> http://sites.google.com/site/elettronicaarduinoesperimenti/Home/thermostat-with-ua-741
> You need a thermometer for the first calibration, but once you do this it will work like a charm, I'm using it for my laminator.
> have fun
> Sapo
>
2010-02-13 by Stefan Trethan
On Sat, Feb 13, 2010 at 2:31 PM, sailingto <sailingtoo@...> wrote:
> You are correct there - that approach is cheaper.... and Stefan is correct - a person "could" spend $30+ for a temperature controller that would hold the temperature closer to setpoint.... but where is the fun in that? This was a chance to etch a PCB, design a circuit, and do some uC programming. Great fun:)
>
> Had I purchased all the components the cost would surely have been more than buying - but due to the generosity of a friend and my spare parts bin, I think about the only thing purchased for the temperature sensor itself... oh, and the $3 Radio Shack box. I have several of the $4 uC chips laying around and this was a perfect chance to learn some code for the uC.
>
> Ken H>
>
2010-02-13 by sailingto
--- In Homebrew_PCBs@yahoogroups.com, Stefan Trethan <stefan_trethan@...> wrote:
>
> Depends on how much time you have on hand.
>
> Personally I have so much stuff to do that I just can't buy off the
> shelf for a reasonable price. I get plenty of uC time there, so I have
> no desire to re-invent the wheel for practice.
>
2010-02-13 by Stefan Trethan
On Sat, Feb 13, 2010 at 4:19 PM, sailingto <sailingtoo@...> wrote:
> Ahh, but Stefan, you are so far ahead of me in knowledge and experience on this electronic stuff there is no comparison. Sometimes it helps me to learn/understand things if I *re-invent the wheel* - that really helps me understand rather than just buy something off the shelf.
>
> .....and as I approach retirement - this stuff is a LOT more interesting than just sitting on the porch watching traffic go by:)
>
> Ken H>
2013-06-08 by Rich