[sdiy] Video synthesis

Oren Leavitt obl64 at ix.netcom.com
Sun Nov 3 21:00:47 CET 2013

Here's a complete video game implemented with 23 555s and a few LM324s 
and generates a monochrome composite video output.


- Oren

On 11/3/2013 1:14 PM, rburnett at richieburnett.co.uk wrote:
> A good place to start with generating your own video signals is to dig
> out the relevant video timing standard document.  This might be PAL,
> NTSC, SECAM, 720p, 1080i, one of the VGA modes, etc.. depending on what
> you are going to use to display the output.
> It is not hard to generate a basic video signal with a microcontroller
> like the PIC or propeller.  A quick search on youtube or google should
> return some DIY video using low cost micros. But these days it's
> probably a lot less grief just to buy yourself a Raspberry Pi and learn
> how to program that.  To the best of my knowledge composite video and
> HDMI outputs are already implemented in hardware for you, so you can
> concentrate on learning to program it to make some cool imagery.  You
> also have a powerful embedded board that you can use for other things if
> your interests change.
> -Richie,
> On 2013-11-03 16:58, Jean Bender wrote:
>> Hi !!
>> Thanks a lot for your answer ! We are actually using an oscilloscope
>> for playing around geometric shapes ! And that's work pretty well, i
>> must say !
>> But after a lot of searches, except some sub forums on electro music &
>> muffwigglers, there's not so much informations about video synthesis..
>> There are some great synths made in the 70s, the EMS Spectre & the
>> Sandin Ip, nowadays we can find the LzX products, but not so much
>> stuff in a diy manner..
>> I know, for exemple, that i could hack a vga cable in order to get a
>> sync, but.. i don't want to use a computer, and i'm more interested in
>> composites signals..
>> And my main goal actually, is to understand, how, electronically, a
>> sync works, and how it should be melt to a video signal..
>> Cheers !
>> jb
>> 2013/11/3 cheater00 . <cheater00 at gmail.com>:
>>> Hi Jean,
>>> On Sun, Nov 3, 2013 at 5:11 PM, Jean Bender <lofideadbeat at gmail.com>
>>> wrote:
>>>> Hi !!
>>>> I'm looking to this list now for a while, but i've just discoverd how
>>>> to send you mails.. So i begin !
>>>> I'm not so experimented as most of people here, but i enjoy a lot
>>>> electronic, and practice it as often as possible in order to build my
>>>> own instruments ( most serge synth & handmade cmos based noise
>>>> makers).
>>> Welcome to the forum. Don't be daunted by the amount of jargon flying
>>> around the list - soon enough you'll be able to talk about most
>>> topics. No one here knows and understands everything - or even most -
>>> about synthesizer design. Since you DIY, you're right at place here!
>>>> Actually, i'm working with a friend on a new project based on video &
>>>> sound relationship. In order to go further into it, i'd like to build
>>>> some video synths. Actually, i've found some documents about the
>>>> Sandin synth, and its schematics.. I've had a look to links given by
>>>> LzX industries, but i'm not sure about how works syncing in video
>>>> synthesis...
>>>> I think i'm a bit off topic, but.. maybe somebody here would have some
>>>> knowledge to share, or books to advise...
>>>> I'm really begining into video, so any advice will be appreciated !!
>>>> Jb //
>>> You might find an oscilloscope with variable persistence to be very
>>> useful for video synthesis. Get something like a Tektronix 7633. You
>>> can get really fun geometric shapes with this method.
>>> Cheers,
>>> D.
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