Hacking stomp boxes..

[robin bussell]

Regarding a thread of a while back about hacking into guitar effects
units I thought I'd see if anyone else had tried this:

Here's a very easy mod for any cheap digital delay
pedals you may have ( I used an Arion ). Take a peek inside and see
if it uses a ram chip that you recognise, many have a 41256, if so then
you can look up the pinout and find the write enable pin. A quick
cutting of the pin and wiring a switch in results in an 'infinite hold'
feature.
You may need to put in a pullup resistor as well as some chips don't
respond very well to just having the pin disconnected.
In my case I was also able to double the maximum available delay time by
fiddling with a preset in the clock circuit, without the filter being
changed this results in some very interesting noises :)

I daresay feeding a vco clock into the thing would also be worthwhile..
hmmmmmm!

For anyone who tries this on the arion beware that the metal shielding
bracket that needs to be removed to get at the RAM actually acts as part
of the ground circuit and stops things working until you put it back..
had me going for a while :-)

 Cheers,
      Robin.