Re: Anyone ever attach a mono LCD to a PET?

----- Original Message ----- 
From: Philip Lord
To: cbm-hackers@musoftware.de
Sent: Tuesday, May 08, 2012 11:07 PM
Subject: Re: Anyone ever attach a mono LCD to a PET?

> Ultimately I want it to be a all in one unit that I can take to parties
> and impress the hipster crowd (ok, only joking about that).

Well, I was impressed when you first finished it and showed it, especially
after all the tribulations getting the PET board itself working; one of the
more challenging repair sagas (and 'scope tutorials ;-) on VCF.

mike
******************************************************
----- Original Message ----- 
From: Philip Lord

If you look  here you can see my PET 2001 motherboard in a suitcase.


http://web.mac.com/lord_philip/other_computers/20012.html#107


It was the perfect fit, and I even have a 'PETdisk installed now. I don't
consider this project complete yet as I want to tidy up the cabling that
brings the power into the case for a more elegant solution, and finally I
want to install an internal 7" LCD monitor/TV as I have a couple that I
purchased a few years ago on a trip to China for about $50 each. I have
measured things up and if i build a small bracket I can mount the screen on
the lid of the case (inside of course) and have it 'float' above the lower
left side of the motherboard. When closed it should fit snugly behind the
keyboard area.
 Ultimately I want it to be a all in one unit that I can take to parties and
impress the hipster crowd (ok, only joking about that). I have one of the
composite adaptors from eBay and I find it to work very well with the LCD
screens.


Phil






On May 9, 2012, at 10:26 AM, MikeS wrote:


Well, like Ethan I'm thinking about what to do with a spare PET (2001)
board, not acquire another one ;-)
----- Original Message -----
From: Steve Gray
To: cbm-hackers@musoftware.de
Sent: Tuesday, May 08, 2012 9:06 PM
Subject: Re: Anyone ever attach a mono LCD to a PET?


If you had your choice of boards to use, the 8296D board would be the
smallest. It also doesn't have the large capacitors and heat sink that the
other pet boards do. As a bonus it runs off +5V. An 8296 motherboard (no
"D") can also be converted easily. These motherboard would fit nicely behind
a 15" lcd monitor and also have the external keyboard connector. I wouldn't
want to use the "SK" keyboard though since it would look strange, and
instead try to mount the keyboard in a smaller enclosure.

VICE? .... smack! didn't duck fast enough ;-)

Steve

From: MikeS <dm561@torfree.net>
To: cbm-hackers@musoftware.de
Sent: Tuesday, May 8, 2012 8:10:41 PM
Subject: Anyone ever attach a mono LCD to a PET?



> One of my back burner projects has long been using an old terminal for the
> P/S, display & case, and maybe even the keyboard; unfortunately the PET
> boards are a little long to fit inside any terminals or monitors that I've
> seen so it'd probably need to go into a pizza-box case under the monitor.
>
> Just another option...
>
> But heck, anybody can hook it up to an LCD; what you really need is a nice
> plasma screen; maybe squeeze it into an old Toshiba laptop? A T3200 is
> almost long enough ;-)
>
> (Of course you could always just use an old monochrome laptop autostarting
> VICE ;-)
>
> mike (ducks & runs)
>
> ----- Original Message ----- 
> From: "Ethan Dicks" <ethan.dicks@gmail.com>
> To: <cbm-hackers@musoftware.de>
> Sent: Tuesday, May 08, 2012 2:53 PM
> Subject: Re: Anyone ever attach a mono LCD to a PET?
>
>
> On Tue, May 8, 2012 at 2:46 PM, Steve Gray <sjgray@rogers.com> wrote:
>> Hi Ethan,
>>
>> I have looked for mono lcd screens on ebay for exactly the same purpose
>> and
>> haven't had any luck. the occasional one would be listed but at
>> ridiculous
>> prices.
>
> Obviously, I'm not interested in ridiculous prices.
>
>> I think you'd be better off with a color panel. VGA LCD monitors are
>> quite cheap but these days it's hard to find one that syncs down low
>> enough.
>
> A standard VGA panel will _not_ sync down to 15KHz, which is why I
> wasn't looking at those.
>
>> I have an NEC 1550M unit that syncs down to 15kHz and I was hoping to try
>> to
>> hook that up to the pet somehow. I think you need to adjust the voltage
>> levels though.
>
> Level adjustment is easy enough - a simple voltage divider, or MOSFET
> circuit or possibly even a 4066 should do the trick.
>
>> The other option is to go with a TV-type LCD unit that accepts composite,
>> and just make a small adapter to convert the PET signals to composite.
>> You
>> can buy a small pre-made board on ebay for $25, but it's really just a
>> single chip that should only cost a buck or so.
>
> I know how to build a composite adapter for the PET, but having done
> it in the past, I was less than thrilled with the results (adjustment
> fiddliness and picture that was not rock-steady and sharp, unlike a
> "real" PET display).
>
> -ethan
>
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>


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