[sdiy] Video synthesis

Jean Bender lofideadbeat at gmail.com
Sun Nov 3 21:33:32 CET 2013

Wow !!

Thanks for all your answers !

>>But these days it's
>> probably a lot less grief just to buy yourself a Raspberry Pi and learn
>> how to program that.

I've thought about that, and i preffer looking for an "analog" way to
discover video synthesis. My goal is not to build "video makers" but
more to have some instruments that could be interfaced with my musical
gear.. It would interpretate sounds to make video, and it also could
be controlled by voltages from the same gear..
I think it's a huge project, more in the way LZX industries seems to go..

The 555game gives in its shematics a sync based on 2 555 timers.. it
could be a good start !

Cheers, jb

// sorry for my written english, hope it's understandable .. i'm not
english native !

2013/11/3 Oren Leavitt <obl64 at ix.netcom.com>:
> Here's a complete video game implemented with 23 555s and a few LM324s and
> generates a monochrome composite video output.
> http://kaput.retroarchive.org/555game/
> - 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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Jean Bender

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