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1
preenfm2 and preenfm3 / Re: PreenFM3 - Can't access SD card via USB
« Last post by Xavier on Today at 09:11:08 AM »

Hi Alexandre,

The SD card is only accessible from the bootloader.

Press the menu button while powering on your pfm3, then press button 3 "SD card access".
Is it what you did ?

Xavier
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preenfm2 and preenfm3 / PreenFM3 - Can't access SD card via USB
« Last post by Alexandrejoe on January 26, 2022, 04:26:23 PM »
Hi,

I'm the happy new owner of a PreenFM3 (bought prebuild at Van Daal). When I plugged it via USB to my computer (OSX 13.6), it is correctly powered but it seems that the built-in SD card is not detected on my computer. There is no external disk displayed i the computer however I can see in System information / USB details that the PreenFM3 is correctly detected.
I also tried with a PC (Windows 10) and I've got the same problem, I can't find the SD card (or any external storage) in the external devices.

From the PreenFM3, I can see and load banks & presets that seems stored on the SD card.

Any advice?

Kind regards,
Alexandre
3
preenfm2 and preenfm3 / Re: PFM3 blackout after update
« Last post by gianandrea on January 10, 2022, 12:00:15 PM »
Did it!
Thank you very much for the support!
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preenfm2 and preenfm3 / Re: PFM3 blackout after update
« Last post by Xavier on January 10, 2022, 09:01:17 AM »

Hi,

Can you enter the bootloader ? (Press MENU while powering on your preen).

1. If Not : You likely flash the firmware over the bootloader. So your pfm3 cannot boot at all.
You have to reflash the Bootloader AND the firmware. Using DFU method.
https://github.com/Ixox/preenfm3/wiki/Upgrade-firmware-(Flash-bootloader)

2. If yes : use the bootloader (or another DFU method) to flash the firmware.
Double check the adress where the bootloader and firmware must be flashed on the MCU (respectively 0x8000000 and 0x8020000).
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preenfm2 and preenfm3 / Re: Preenfm3 DX7 patches
« Last post by BobV on January 09, 2022, 07:47:21 PM »
ok, I didn't have correct folders.

It's working fine now as per these instructions. Thanks a lot.
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preenfm2 and preenfm3 / [Solved] PFM3 blackout after update
« Last post by gianandrea on January 09, 2022, 05:36:11 PM »
Hello there
I tried to flash the 1.09 firmware via DFU mode and my PFM doesn't boot up anymore, both with the 9V and the 5V USB power supply.
Frightened by this mess, I've reloaded from scratch the 1.07 firmware but it persists in not booting up.
When power is connected there's light in the enclosure, this makes me think I haven't fried up anything important.

What have I made up to scrumble the things like this? Is it something I can fix on my own? If yes: how?

Thank you!
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preenfm2 and preenfm3 / Re: Clean FM tones?
« Last post by Xavier on January 09, 2022, 02:58:27 PM »
Hi Xavier,
  How do access this information on the Preen? On starting up it just has your name and the OS?
 Many Thanks
 J

If you don't see "24 bits DAC" then it uses the 2 * 12bits DAC which have more noise.
Open it and check the PCB version. Only R6 use the 24 bits DACs.
Don't use your preenfm2 to make clear sin sound, add a little modulation to make the spectrum richer and the sound will be fine.
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preenfm2 and preenfm3 / Re: Clean FM tones?
« Last post by JamesT on January 09, 2022, 01:22:52 PM »
 Hi Xavier,

  How do access this information on the Preen? On starting up it just has your name and the OS?

 Many Thanks

 J
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preenfm2 and preenfm3 / Re: Preenfm3 DX7 patches
« Last post by Xavier on January 09, 2022, 10:58:04 AM »
Hi,

You'll get some info here :
https://github.com/Ixox/preenfm3/wiki/SD-card

"DX7 sysex can be read and DX7 parameters are roughly map to the preenfm3 parameters. That can be a good start to create a new preset, but don't expect great DX7 emulation.
Only 4104 bytes sysex dumps with 32 presets are readable.
You can find a big archive of those files here. DX7 sysex files must be copied in the /pfm3/DX7 folder"
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preenfm2 and preenfm3 / Re: Clean FM tones?
« Last post by Xavier on January 09, 2022, 10:56:06 AM »

Do you see "24 bits DAC" when you turn on your preen on the 4th line ?
If not, I think you have the previous 18bits version which was not very good at pure sin waves.


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