Anyone ever attach a mono LCD to a PET?

From: MikeS <>
Date: Tue, 8 May 2012 20:10:41 -0400
Message-ID: <CA623C475F764532B6278C8AD7FE88CD@vl420mt>
> 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" <>
> To: <>
> 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 <> 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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Received on 2012-05-09 01:00:29

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