For the USB Stick

Zip File to extract to you USB drive. Contains banks, one DX7 sysex file, firmware binaroes and a few scala scale files..

If you want other DX7 sysex files to copy in your « /pfm2/dx7″ folder, download the archive here called « SYX files ».

If you want 4500 scale files, download the scale archive at the bottom of this page :

Banks (i think they’re all in the zip file just above) :

PreenFM1 funkyfli 128 sounds bank to copy in « /pfm2/ »

PreenFM1 system bank to copy in « /pfm2/ ».

Funkyfli’s bank.

Clement’s bank .





PreenFM2 Firmwares 

If your bootloader is already flashed, you can quicly copy the firmware to the USB drive and flash from there: instructions are here
If you have a all new CERB40 board you’ll need to flash the bootloader go here.

Preenfm2 bootloader : Bootloader 1.11

And the latest firmwares :

Firmware 2.07 (Decembre 2016)

. Mtx1-4 problem fix. Details here

Firmware 2.06

. Fixes and improvements.. Details here

Firmware 2.05

. Fixes and improvements.. Details here

Firmware 2.03

. more CC

Firmware 2.02

. Better user waveform preprocessing

Firmware 2.01

. User Waveforms. 6 slots for your own waveform.

Firmware 2.00 b1

. Modulation matrix per voice : real polyphony
. Scala scale files supported : microtonality.
. 2 * Midi note scale
. LFO1-3 phase

Firmware 1.06

. Bug fix : When Ksyn = 0.01, LFO started with a huge value that could produce audio click at the begining of sounds.





The PCB was designed with Kicad :
The R5c kicad files are here : right click here and save
The older R4 is here : right click here and save.

Here is the PCB schematics (R4) in PS format.



Previous model by me :

The Case was designed with Inkscape, Use 3mm thickness when you order it on Ponoko or Formulor.
. Case that fits regular LCD : LCD bezel size 98mm x 40mm. Previous svg files made with inkscape has problems with other vector apps, click here for the EPS file.
. Case for newhaven OLED display : OLED bezel size 94mm x 32mm - If you only need the top surface, download a P1 template from ponoko/formulor and copy the top surface inside.

There are lots of free space on this plate, edit it and add what you want. You can even duplicate everything and create a second box.

Latest model by Frank Daniels (fcd72) :

This is the EPS file used by Frank to cut the cases.
It requires some work before being sent to ponoko or formulor. Please let me know if you have one that you successfully used : Click here to download.


Code and additionnal docopensource

The source is on github at this adress.

The algorithms in PDF format.