CHASM REVERB

[deadastronaut]

john, cool, so it was the footswitch then,..

re the osc: double check the 2 resistor values that the switch goes to...

47k osc

100k non osc

[Jdansti]

The 47k (Y-V-O) is reading 50k and the 100k (Bn-Bk-Y) is about 105k.

However... The 100nF cap across the two resistors appears to be a 1nF cap. I'll pull it and check.

[Jdansti]

The correct cap did the trick!  I've got oscillation now. Unfortunately the oscillation irritated my wife.   She told me to stop playing and build something (I can't play while I build).

Anyway, I'll post the results after I get it boxed up.

Thanks Rob and theehman for your help!

[deadastronaut]

next project: build the wife some headphones..

cool glad you got it sorted. 

[Jdansti]

LOL 

[pinkjimiphoton]

psyched.... my brick came in today... tomorrow, i'll get some rat-shack perf (my first attempt at perf, <shudder>)
and i am gonna build this thing...

thanks rob!! this and jon patten's cardinal trem and i think i'd done for a while.

[deadastronaut]

perf?...brave man..

[pinkjimiphoton]

cheater perf, the stuff with a pad for every hole!!

isn't your layout on perf?

seems easier than vero, at least this project for some reason. vero's great for simple fuzzes, but sometimes it can be a pia!!

[deadastronaut]

hi jimi, its on pcb...

i only use vero for tiny quickie stuff.

[Jdansti]

Here's my Chasm Reverb. Thanks for working on this Rob and the others who collaborated. Sounds great!

This was my first epoxy pour-on. Thanks to Mustachio for great Envirotex tips on other threads.









Edit: I should add, thanks to some talented person who put the chasm art on the web.

[pinkjimiphoton]

hi jimi, its on pcb...

i only use vero for tiny quickie stuff.

i know i did more than my share of acid, but the pdf in this thread sure looks like it's on perf to me!!

lol

[haveyouseenhim]

hi jimi, its on pcb...

i only use vero for tiny quickie stuff.

i know i did more than my share of acid, but the pdf in this thread sure looks like it's on perf to me!!

lol

There's a PCB transfer along with it.

https://dl.dropboxusercontent.com/u/7464107/CHASMPCB.pdf

[Jdansti]

+1

^I think that the spacing on the color image that shows the components is the same as perf board spacing. Even if it's not exact, I'll bet it'll work for ya'.

[pinkjimiphoton]

lets hope so, cuz i can't burn any pcbs!!

if it will fit on the perf layout, i think i can do it. i'm brave AND stupid!!

i think it should work out, as if the stuff fits on the perf layout, it should fit in reality hopefully!!

[alanp]

I did up a pcb to avoid flying wires, and to avoid perf, and to even more avoid having to etch PCB's (dont have the supplies, don't want the headache of disposal.)

Probably would have been less effort doing it point to point :/

[pinkjimiphoton]

honestly, after the clone theory project on vero, everything looks kinda easy now.

[haveyouseenhim]

lets hope so, cuz i can't burn any pcbs!!

I'll burn one for ya if you would rather use a PCB.

[pinkjimiphoton]

that would be awesome mike, if you could, i'd be grateful...
should probably leave the perf toward something a little easier to start with i get the feeling!!

do you need my addie again?

[bluebunny]

Here's my Chasm Reverb. Thanks for working on this Rob and the others who collaborated. Sounds great!

Nice one, John.  Looks great.  I must get round to building mine...

Edit: I should add, thanks to some talented person who put the chasm art on the web.

You should have kept quiet and taken all the glory!   

[haveyouseenhim]

that would be awesome mike, if you could, i'd be grateful...
should probably leave the perf toward something a little easier to start with i get the feeling!!

do you need my addie again?

Yeah. PM me your address and I'll have it done within a week.