[sdiy] 4xD Quad Flanging Delay

[Seb Francis]

Hi,

I'd like to announce my latest project: the 4xD Quad Flanging Delay.  
It's kind of taking the Box-O-Trix modular effects processor concept and 
applying it to a digital delay/flanger.  In fact, it could be 
inter-patched quite nicely with the Box-O-Trix if you like a bit of 
compression or distortion in your feedback loop!

http://burnit.co.uk/sdiy/index.php?page=4xd

It might also be of interest if you want to have a play with audio-DSP 
programming (read near the bottom of the page).  The design has been 
somewhat improved since my previous post - it's now using dsPICs with 
many more pins so they can access the SRAM without wasting instruction 
cycles moving the bits around to suit the available I/O.  And while I 
had all those pins free I decided to go for bigger SRAM.

Anyway, as with the Box-O-Trix, I'm hoping some people would like to 
share the cost of the PCB run with me.  As before I'm not sure of the 
price until I get an idea of numbers, but I'm hoping it'll end up at £30 
or less per PCB.

One thing to bear in mind is this uses quite a lot of surface mount 
components.  I've tried to keep them all as big as possible (i.e. 0.8mm 
pitch), but the CODEC ICs are only available in a 0.65mm pitch TSSOP 
package - having said this though, I didn't have any problems soldering 
one onto a surface mount adapter just using a flux pen and my normal 
soldering iron.  There is the possibility I can sell a *small* number of 
these PCBs with the surface mount stuff pre-assembled - but I don't want 
to become a factory worker, so I would prefer not to.

It's fairly early stages at the moment - I'm still designing the PCB 
layout - but I'd like to get an idea of the amount of interest, so drop 
me an email if this tickles your fancy :)

Seb