[sdiy] Synthi AKS sequencer cloning possibilities - and musings on Ken Stone's Pedalboard Controller as the core of an arpeggiator/sequencer.

[Fernando de Izuzquiza]

I loved to play that sequencer. A very smart design (in terms of  
functionality I mean)

It could be great to have available some sort of long memory with  
plenty of resolution to record gestures and values, like in the AKS  
(and without an actual computer)

Maybe it can be done with a PIC?

Fernando



El 08/11/2007, a las 21:58, anthony escribió:

> I can't remember if we've discussed this topic in depth or not so  
> I'll cast again:
>
> I've looked at the schematic for the sequencer for the Synthi AKS  
> and it is amazing. And it's sad that what looks like a critical  
> component is horribly and finally obsolete. Has anyone ever thought  
> of updating this design.
>
> I like the idea for an on-the-fly performance oriented sequencer.  
> Knob twiddling is fun, but it would be great to be able to just  
> punch a sequence in and go. I have a design germinating in my brain  
> that revolves around Ken Stone's CGS Pedalboard/Minikeyboard  
> controller, some latches, like maybe CD4044's and his CGS gate  
> sequencer and some other bits to fit it all together. I first got  
> the idea when I looked at the schematic for the CGS Pedalboard  
> schematic - the way the CV in generated from the output of the  
> 74C922 (or a 74C923 for a 20-note version...) with a R2R ladder  
> like a D/A converter. I thought you could take that raw binary  
> output and chug it through a chain of latches with their own R2R  
> ladders, controlled by some sort of sequencer and it'd make a nice  
> arpeggiator/sequencer.
>
> Doesn't this sound like a neat elegant aproach? It woldn't get a  
> 256-step sequence, but 8 or 16 would be easy.
>
> I think both ideas have their merits.
>
> Oh but I were a rich man and I'd have my own Synthi AKS and I could  
> play "On The Run" on my very own!
>
> cheers,
> aa