Differentiator / function generator?

[warpigs666]

Has either the Differentiator or the function generator been replicated in new modules? Are they still available or do they come up for sale often? They’re both very attractive modules at a good price and size!

[sean]

@reverselandfill did this:

Triple Function Generator project

Project description: I want to make a Triple Function generator based on the Sandin/LZX design. The function generator is very cool if you use it to re-colorise the B/W Luma input . Especially with camera feedback, this gives very beautiful results. Each generator stage can be used individually too. Features: 3x shaper for re-colorizing the B/W Luma video input and other processing normalised inputs Options: extra gain & span pots? See Grant Richters adapted schematic below - to be tes…

Order a kit here:
https://www.etsy.com/listing/664989156/triple-function-generator

[Genlok]

I’m selling a Triple Function Generator if you’re interested

[reverselandfill]

An adapted version of the Differentiator is still something I want to build.
My idea was to make a voltage controlled feedback Differentiator.
You can patch it up with some Cadets, but it takes a lot of cables. So a dedicated module would be great.

Currently I’m a bit stuck on the design. I’ll continue the Thread, maybe somebody can help me with the design!

Differentiator VC Feedback Project

Thanks Jefro! First order of business is to design the project. When the prototype is ready, it would be good to test different system routings. I’d like to make this module because I like to have this effect without having to patch this all the time. It is a pretty extensive patch, so it would be useful to have a pre-routed module for this (with some added features) As before, this is an open source project mainly focused on DIY. My current idea is to have a module that does voltage contr…

[warpigs666]

Are there video examples anywhere? I don’t see any. Also does anyone know if setting this up for color means that it alters the original design and can’t be used the same as the original?

[warpigs666]

This looks great, I just couldn’t tell based on the description whether it functions along the lines of the original design or if this is something primarily intended for colorizing.

[reverselandfill]

The Differentiator makes edges,my take on it would be to make iterations of edges…
These are some video examples in the design thread.
To do colored edges, you would need 3. Or do some creative patching with some mixers.

My Triple Function Generator is three times the original design with some routing options
The original Function generator is a sort of waveshaper / equaliser for light, medium and dark tints.
You can invert, boost and lessen those ranges, causing interesting shading effects.
To do RGB, you need 3 of these, which is why I made my version

these are the LZX demo video’s

Module Preview - Sandin IP Differentiator

Module Preview - Sandin IP Function Generator

[Fallinggirl]

This is gorgeous! Is there any way I could purchase this assembled? I think my boyfriend knows you. His name is Paul Tas and he owns Error Instruments in Amsterdam. I’d have him build it for me but he is so busy with his own modules.

[reverselandfill]

I have the ‘triple function generator’ available, which I can build for you.
PM me!

[Robbertunist]

Here’s a photo of the Sandin Differentiator with coloured jack nuts, Rainbow edition

Here’s