hey all
looking at making a small bear order and i see that FV-1 chips and belton bricks are basically the same price. i've had a look around but it's pretty confusing - are there any simple, 'drop the chip in' reverb circuits for the FV-1? using the algorithms that are pre-programmed into the chip? like the equivalent of the rub-a-dub reverb for the belton brick.
obviously the surface mount makes a difference and i understand (vaguely) there are a bunch more things that can go wrong with an FV-1 circuit due to noise etc. and way more possibilities for interesting effects. but would love a straightforward, does what it says on the tin hall / room reverb to contrast with the spring feel of the beltons.
many thanks for any leads. i've searched quite a bit on this but it seems a lot of detailed projects around the development board and equivalents..
I know TonePad has a PCB for this chip: http://tonepad.com/project.asp?id=68 (http://tonepad.com/project.asp?id=68). Documentation seems pretty vague though ... so you might google a bit to see if and how people actually got it working.
interesting thanks i hadn't seen that, yep that's basically the exact kind of thing i'm looking for. the build reports seem a bit sketchy.. will look into it more.
http://www.diystompboxes.com/smfforum/index.php?topic=118048.0
Thats been thrown around over on diystompboxes and whilst its not a pcb its a really cool intro. You may have seen it but didnt want to chance it!
I mean, you could just throw together the reference circuit from the build doc: http://www.spinsemi.com/Products/datasheets/spn1001/FV-1.pdf , thats pretty much what the Rebote delay was for the 2399.
The Tonepad layout is fairly close, just includes the power supply and input buffer (and keeps the EPROM as optional). Its probably about as simple as you could get and at 14$ (or a rather hairy double sided etching adventure) its not bad at all.
And now digging through the datasheet.... It looks like they use a 3 digit binary set up for the program select, that's awesome (they're labeled most significant bit to least significant). So program 0 would be all toggles down, program 1 would be S0 up, 2 would be S1 up, etc.
Ok, so I'm a nerd.
haha
thanks, that thread seems very promising. bit puzzled that there aren't more PCBs floating around for this kind of thing given how nice the chip sounds and it's not crazy expensive.
i might try out that perf layout on breadboard next time i order from small bear. it's a significant jump in cost for the 'experimenter's board' and i have no desire to write code or anything of the sort any time soon.
I'm surprised there aren't more projects available but the Molecular Compactor by drolo is superb. If you bypass the off-chip pic chip you can use the stock FV-1 patches. Would be worth hitting him up to see if he has any boards available.
oh awesome thanks that looks perfect
edit:
ok so i checked out the molecular compactor in more detail it looks fantastic. also the huge DSB thread here http://www.diystompboxes.com/smfforum/index.php?topic=104291.0 and the osh park link.. but that's a minimum of 3 PCBs.
and saw that BYOC has a straightforward reverb here: https://buildyourownclone.com/products/lil-reverb-kit but doesn't look like i can just get the PCB.