FV-1 Pedal

[BuGG]

I'm not the best at stripboard layouts so I'll just post this here for the experts to play with....  =)

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)
http://www.pedalpcb.com/product/ezfv1

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.

[Alex]

Thanks BuGG!
It looks really cool!
Hope this will work:

[BuGG]

That looks excellent!    ... and that is why I left it up to you guys.     =D

[heuermh]

Awesome!  I've been hoping something like this would come along.

I really like the idea of working with the FV1 but haven't liked all the multi-function/multi-program way-too-many-knobs schematics and PCB designs floating around.

[Alex]

Hi Rob/BuGG (Is Rob correct?)
I want to add this layout on the main page where I think it may get more exposure but I honestly know nothing about FV-1s or how your circuit works.
If I do, would you be able to answer some people questions?

[heuermh]

Alex wrote

I want to add this layout on the main page ...

I've received my FV-1s and am looking forward to verifying this layout, but am still waiting on a few of the other parts.

[BuGG]

Alex wrote

Hi Rob/BuGG (Is Rob correct?)
I want to add this layout on the main page where I think it may get more exposure but I honestly know nothing about FV-1s or how your circuit works.
If I do, would you be able to answer some people questions?

Absolutely!   I've been meaning to verify the vero myself but have been a bit busy...   I have a feeling heuermh will beat me to it. =P

I'll have pre-programmed EEPROMs available soon for those who just want to build the thing and not fool around with programming as well.

[heuermh]

> I'll have pre-programmed EEPROMs available soon for those who just want to build the thing and not fool around with programming as well.

Right, I mostly likely have overlooked a step.  I was planning to use SpinCAD to design the algorithms

http://holycityaudio.com/spincad-designer-2/

(or perhaps even the underlying library ElmGen, since I'm more of a coder than diagrammer) which exports the Spin assembly as a hex file, I would presume.

Then I'm not sure yet how to put that on the EEPROM.  I was thinking write to it from a Teensy or similar?

[Mulekicker]

Can the FV-1 be used for polyphonic up/down octaves? I ask cause I was looking at the new Octave Jawn mod that Fuzzrocious is doing on their pedals and the pic I saw of the PCB didn't seem overly complex. I'm totally dumb when it comes to spin chips and their capabilities and was curious if that was what they used. If i could build a polyphonic octave on vero I'd be pretty goddamn excited!

[BuGG]

You can get a USB EEPROM programmer for a few dollars on eBay....

Use SpinCAD (or ElmGen) to create a SpinASM source file, compile it to hex with SpinAsm IDE, then dump it to the EEPROM with the USB programmer.

[BuGG]

Would this work for you?   If so, yes. =)

https://soundcloud.com/pedalpcb/polly

[Mulekicker]

Oooh! Yes!

[Fever2112]

would this work for the 24LC32A chip?

https://www.amazon.ca/Gikfun-Programmer-CH341A-Burner-EEPROM/dp/B01JINDC90/ref=sr_1_2?ie=UTF8&qid=1523480075&sr=8-2&keywords=usb+eeprom+programmer

[BuGG]

Fever2112 wrote

would this work for the 24LC32A chip?

Yep, I have one of those, works great.

[Fever2112]

heuermh wrote

> I'll have pre-programmed EEPROMs available soon for those who just want to build the thing and not fool around with programming as well.

Right, I mostly likely have overlooked a step.  I was planning to use SpinCAD to design the algorithms

http://holycityaudio.com/spincad-designer-2/

(or perhaps even the underlying library ElmGen, since I'm more of a coder than diagrammer) which exports the Spin assembly as a hex file, I would presume.

Then I'm not sure yet how to put that on the EEPROM.  I was thinking write to it from a Teensy or similar?

I tried to get the designer from their forum but needs registration - which I did - but no one has activated my new account for days.... anyone have the program that can share it out?

[Taliesin]

Signstek TL866A Universal USB MiniPro EEPROM FLASH BIOS Programmer AVR GAL PIC SPI Support 40 Pin with Unique Interface ICSP https://www.amazon.com/dp/B00K756PB6/ref=cm_sw_r_cp_api_ZQM0AbPDZ49E1

Would this work with the fv1? Is there anything cheaper?

[BuGG]

Taliesin wrote

Signstek TL866A Universal USB MiniPro EEPROM FLASH BIOS Programmer AVR GAL PIC SPI Support 40 Pin with Unique Interface ICSP https://www.amazon.com/dp/B00K756PB6/ref=cm_sw_r_cp_api_ZQM0AbPDZ49E1

Would this work with the fv1? Is there anything cheaper?

It should work, but if you want something cheaper looking for the CH341 USB programmer.

[traktop]

This is the resonator to get from tayda, right?
https://www.taydaelectronics.com/crystals-resonators-oscilliators/crystals/32-768-khz-crystal-cylender-3-x-8-mm.html

[BuGG]

traktop wrote

This is the resonator to get from tayda, right?
https://www.taydaelectronics.com/crystals-resonators-oscilliators/crystals/32-768-khz-crystal-cylender-3-x-8-mm.html

Yep, that's the one.  

[Zerikin]

This looks like exactly the kind of thing I've been looking for to get into digital effects. Has all the ADC/DAC built it with a good sample rate already AND support for up to 3 pots. I'll have to build this out on breadboard. It may never end up in a peddle haha.