It is available here: http://www.pedalpcb.com/product/ezfv1.
This is what he wrote about this circuit in our Forum / Requests section (schematic available there):
"This is a fairly straightforward single-algorithm FV-1 circuit, it would be a nice starting point for learning how to work with the FV-1.
For easy stripboard building the PedalPCB EZ FV-1 module is available, a through-hole FV-1 module for stripboard/breadboard layouts. (ready to use, no SMD soldering required)
The pin spacing is standard 0.1" x 0.6" so it can be handled like a standard PDIP-28 (WIDE) IC.
The 24LC23A must be loaded with an algorithm in bank 0, although multiple switchable programs are possible by pulling pins 16, 17, and 18 high (corresponding to the binary encoded bank number).
The internal algorithms can also be used by grounding pin 13.
There will be pre-programmed EEPROMs available soon for those who just want to build the thing and not fool around with programming as well."
... and a more "experimental" version:
Ok, this is cool. I don't know this chip but I get it. What a cool platform for experimenting with roll your own effects.
ReplyDeleteAny idea how the built in Chorus Flange & Reverb sound?
If pin 13 had a toggle on it to select internal or external programs and there was a 3 bank dip switch for 16, 17, 18 for selecting the binary numbers of the banks, this would be awesome for experimenting with the internal programs and experimenting with roll your own effects.
I'm a few projects behind but this looks like it could be super flexible.
Cheers,
Andrew
Added a version with switches.
DeleteThanks for that. I will be building this one.
DeleteBuilt a PedalPCB Octagon with FV-1 and the effects are amazing and flawless.
ReplyDeleteNice layout.
ReplyDeleteI built on of the octagon pedals .It's real nice. I added a rotary plus expression jack and can control the 3 control pots independently with an expression jack.
Here's what I did.
Control 1-2 to A on rotary
Control 2-2 to B on rotary
Control 3-3 to C on rorary
Lug 2 of pot 1 to 1,3 and 4 on rotary.
Lug 2 of pot 2 to 5,6 and 8 on rotary
Lug 2 of pot 3 to 9,10 and 11 on rotary
Pin 2, 7 and 12 to middle lug of expression jack.
Take the 3v3 from lug 3 of the nearest pot to one of the outer lugs of the expression jack. Take ground from pin 1 from from same pot to other outer expression lug.
Oops. Meant control 3-2 not 3-3 to rotary.
Deletei think that few resistors and jumpers can be mooved under fv1 board and it will save couple of rows wide :)
ReplyDeleteI prefer a comfortable, realistic space between components.
DeleteTo be honest.. . I started building DIY effects to avoid digital mulieffects. Learning to mod, combine and improve analog devices is such great fun, unlike rebuilding digital chip-based ready units. But it's just me.
ReplyDeleteThe FV1 is a little different... You aren't limited to a handful of predesigned effects like some of the other digital modules over the years. Using the SpinASM language (or the visual SpinCAD tool) you can craft your own completely new effects, some that wouldn't be reasonable in the analog world.
DeleteWant multiple delay paths feeding back into one another with each going through it's own independent effect? Maybe a bitcrushed "infinite" reverb with a resonant filter on the wet path? Or how about a pitch shifter that shifts up and down two octaves at the same time while applying varied envelope controlled modulation to each side?
All it takes is one of the layouts above and a little code...
Then there's the fact that you can treat the FV1 like an analog component, there are two inputs and two outputs for all sorts of routing/feedback options...
The control inputs don't have to be connected to pots... You can use an external LFO, an LDR, or even a PIC/AVR/Arduino microcontroller.
There is a lot more fun to be had than just rebuilding precanned effects.
Oh..my...
ReplyDeleteLooks like I'm placing an order soon
Just ordered three PCBs! Very cool stuff!
ReplyDeleteThe ThreeVerb on PedalPCB is pretty tasty. Super easy build even with the FV-1.
ReplyDeletemaybe you have some demos of it? i cant find any of them
DeleteGuys if you don't have the coding skills and want to play with a preprogrammed FV-1, uk-electronic in europe has some chips and some accessories (like a rotary encoder for switching the banks): http://uk-electronic.de/onlineshop/advanced_search_result.php?keywords=fv-1&search_in_description=1&x=0&y=0
ReplyDeleteI recently put a reverb pcb and FV-1 kit order on the PedalPCB website. Extremely reasonable prices and shipping. Can't wait to build it.
ReplyDeleteThat module for selecting programs with the built in rotary switch is just great!
ReplyDeleteWhich module?
DeleteGreat,
ReplyDeleteMulti Recharge Software
Verified the experimental version. Used the only coded chip i have which is for the Octagon MultiFX from PedalPCB. It works quite well considering its not designed for it. Just get delay or reverb/tremelo effect. The DIP switch gives more subtle changes which i'm not to sure of yet. Thanks for the layout Alex.
ReplyDeleteThanks, Gavin!!
DeleteI recently put a reverb pcb and FV-1 kit order on the PedalPCB website. Extremely reasonable prices and shipping. Can't wait to build it.
ReplyDelete3D Design
Pre=programmed EEPROM's available right now at PedalPCB!
ReplyDeleteI'm curious about how to do ring mod with the FV-1. The spin website indicates that they treat it as really fast tremolo, but can it do signal multiplication like what is going on in LCM567 based ring mod?
ReplyDeletehi! found a mistake on experimental layout. Cuz of it the switching will not work correct. 16,17 and 18 legs of IC must be able to switch high or low (3.3v or gnd), and in that layout it can be only low. Cant find an easy fix for that so I just soldered a few breadboard patches to 16,17 and 18 instead of a dip switch, and conecting them to the ground or to the output of 78l33. a bit messy but works as it should.
ReplyDeleteAlso keep in mind that sw1 and sw2 must be connected if you want the access to internal FX and it will not work at all if its not connected and there is no another EEPROM in the socket. ..and one more - that layout dont have the direct signal path so all the signal will go thru FV-1. Spent some time to figure ithat out.
ReplyDeleteI am seeing on scope and hearing significant clock noise from Spin FV1 + dev board, plus attenuated volume/signal compared to bypass.
ReplyDeleteI can hear that the effect loaded from the eeprom is present. Any pointers to what may be causing either of these issues,
Thx,
Tim