Recent Posts

1

preenfm2 and preenfm3 / Re: I made some changes to PreenFM2 firmware

« Last post by Xavier on November 10, 2026, 07:33:41 AM »

Very interesting.
I'll have to take a look at this one !!

I'm wondering how it found some free Ram to run this.
Can you have both Dexed and Preenfm2 patch playing at the same time ?

Thanks for sharing 

2

preenfm2 and preenfm3 / Re: I made some changes to PreenFM2 firmware

« Last post by dx100 on November 05, 2026, 02:52:36 PM »

To clarify, only imported DX7 sysex uses the new engine. Everything else uses the existing engine and sounds the same.

3

preenfm2 and preenfm3 / I made some changes to PreenFM2 firmware

« Last post by dx100 on November 05, 2026, 05:39:35 AM »

I (or perhaps we could say Claude) made some updates - two small bug fixes (no more glitch between patch changes with long decay) and the screen saver now works while on Load screen. The big change is the DX7 import now uses an engine based on Dexed (and sounds quite correct in my tests).

I've run it for a while with no problems.

https://github.com/jstefani/preenfm2/releases/tag/v2.30

Let me know if you find any problems or have requests.

4

preenfm2 and preenfm3 / Re: Where to find patch banks for the PreenFM3?

« Last post by Lcerutti on October 29, 2026, 09:53:04 PM »

I do agree a community sharing place for presets is needed.

5

preenfm2 and preenfm3 / Re: Preenfm3 bank & midi list

« Last post by Davidttl on August 27, 2026, 11:21:39 PM »

Hi,

these are my old banks. Don’t get your hopes up too high – they are what they are. I realise there’s never been much choice on the pfm3. I was learning and getting to grips with FM myself.
To get started from scratch, it’s worth exploring randomisation or modifying banks from DX. As far as I remember, banks created with preenfm2Controller can cause the hardware to freeze when you switch to an empty preset – just a bit of trivia. I’ve already fixed this in my fork, but I’m not releasing it just yet.

6

preenfm2 and preenfm3 / Re: Preenfm3 bank & midi list

« Last post by hanginou on August 27, 2026, 08:19:20 AM »

I send you PM and mail with banks zip.

can you please send it to me as well mate? thanks!

7

preenfm2 and preenfm3 / Re: Intermittent button misfire behavior - any thoughts? *FIXED*

« Last post by jabberwalky on August 26, 2026, 04:17:08 PM »

Sounds like the sort of typical behavior of a failing tact switch. It's why I tend to never go cheap on the switches, since you can easily buy cheap ones brand new that have issues like this.

8

preenfm2 and preenfm3 / Feature request: TFT contrast adjust

« Last post by jabberwalky on August 26, 2026, 04:14:54 PM »

Is there a hardware or firmware solution to allow for contrast change to the TFT? I'm aware of the option in 0.107 to adjust brightness/backlight, but that is a sort of different thing. Contrast for LCD greatly improves usability at different viewing angles. The way the PreenFM3 sits on a desk, it's inherently at quite a steep viewing angle. When looking at it straight on, it looks nice and bold. Things like the older MPCs had this option by holding shift+encoder etc. This would be a great addition.

9

preenfm2 and preenfm3 / Re: Intermittent button misfire behavior - any thoughts?

« Last post by Marto on August 26, 2026, 01:23:41 PM »

I have not had this as an issue. might the button's underlying switch just need some contact cleaner?

Thanks for the tip! Happy to report that the issue actually went away with use. Quite odd but seems to be fixed now, thankfully. I appreciate the help!

10

preenfm2 and preenfm3 / Re: A failed PM3 build

« Last post by jabberwalky on August 25, 2026, 05:03:34 PM »

Sorry for the delay.
It the blue led stays on it means the firmware stays in the preenfm3 bootloader.
Can be because the firmware is not flashed (although the bootloader is).

Have you tried turning it on while pressing the MENU button ?
That should enter the bootloader in graphical mode.
So you should see the bootloader on the display.


Bridging J1 on the screen requires to power it with a 3.3v power.
Not sure it's possible with PCB 1.1.
It's not good to power it with 5v if J1 is bridged.

Even if the screen is broken, you should not have the blue led solid and you should get sound when paying midi.

Let me know if you find something, i have spare parts so we'll find a solution.

I was finally able to get this working, but it took quite a bit of troubleshooting. I removed the bridged J1 on the tft for starters. Still the same outcome though. Continued to suspect this must be a software thing.

It seems with the hardware I have, I can't go beyond a certain bootloader and firmware. I can successfully load Bootloader 1.07, and firmware 0.107. After that, firmware 0.108 boots but the panel doesn't function (no buttons or knobs do anything). I figured I need to also update the bootloader dfu, so tried did this via webDFU successfully to 1.00. However, still with any booloader beyond 0.107, the panel will no longer functions and it also disabled me from loading into bootloader mode (hold menu on power up).

So.....that sucks, the new 0.108 reverbs & fx sound very interesting! Looks like I'll be opening it back up to see if the manual header swap to VCC will allow rolling it back.

Has anyone encountered this?

I'm using the very early main board rev 1.1 /144 and control board v1.0 SMD 06/2020, which I suspect may have something to do with it.