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Messages - Xavier

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PreenFM1 (the blue one) / Re: Buying only PCB?
« on: December 06, 2011, 08:50:26 PM »

Let me know how it goes with it...  :D


PreenFM1 (the blue one) / Re: Buying only PCB?
« on: December 06, 2011, 05:22:57 PM »
ah ok. Is there a way to load the firmware then without having to compile all the code from source? I don't have a linux box. :(

Of course, recompiling is only if you want to modify anything...

Here are the instructions to flash a firmware :

And it do work on new Maple Mini.


PreenFM1 (the blue one) / Re: Buying only PCB?
« on: December 06, 2011, 11:39:26 AM »

Explaining how to build the code is on my todo list and will be on the main site.
It's not straightforward.

If you want to try :

You need a Linux machine and to compile libmaple first.
Take the libmaple 0.0.11 also from gibhub:
Rename limaple directory to "libmaple".

and follow the instructions here :

Go ahead untill you can compile it with the ARM cross compiler.

Once this is done, you made the most difficult part.

Take the PreenFM sources from github

Put the preenFM tree at the same level as the "libmaple" directory.

Go in the PreenFM tree, then "make" then "make install".


PreenFM1 (the blue one) / Re: Buying only PCB?
« on: December 06, 2011, 12:04:26 AM »
Hi Ryan,

Thanks  :D

I have some PCBs left (but not anymore the components to solder on it).

Contact me at the adress here :
Or PM me on this forum (haven't tried the PM yet).


actually the 1.02 firmware update fixed all problems I had so far.
so that was a real good one Xavier.

much, much more fun to play.

thank you

Very good news :D


PreenFM1 (the blue one) / Re: PreenFM slows down in engine menu
« on: December 05, 2011, 09:54:32 AM »

Thanks Max :-)

Towel, i'm glad your problem is fixed.

I'll try to fix annoying problems as quicky as possible.




Thanks for the update.

It's possible that the new update 1.0.2 fix the suck notes.
Let me know,

Don't hesitate if you have any more questions.



You added a 4 ;-)
This is what glide is supposed to do...
If a note is still pressed, any new note will make the sound glides to the new frequency witout triggering anything.
If you release the old note before pressing a new one, it will retrigger the note whatever the glide value is.

0 = no glide. A new note is a new note from the start.
1 = very fast glide
10 = very slow glide to new note.

Do you see something different from this behaviour ?


Hi Marco,

1) Difficult to guess without knowing exactly what you are doing and what is the patch you use when you hear that.
Try setting KSyn=0 in for all LFO.
If the effect disappear  what you hear is the fact that the LFO are global for all notes.
This is how it works for the moment...

2) PreenFM won't play more notes than what says "Voic" in the engine 1st page.
Any new notes stop the older ones.

3) Not sure i get it.
What you hear when modifying the enveloppe is totally different if you modify a enveloppe from a carrier operator or a modulator operator.
Carrier will modify the volume of the sound... like it does in substractive synthesis.
Modulator will modify the spectral of the sound.
This is the same with oscillator.
Look at the PreenFM algorithm schema.... A carrier is any operator at the bottomo of each alg. The modulators are operator upper.

Experiment with simple FM synthesis.
Use  algo1.
Set IM2 and IM3 to 0.
Set IM1 to 4.0
And start modifying enveloppe 1 and 2 and oscillator 1 and 2.
When experimenting with other algo the algo paper you get with your kit is your friend ;-)


PreenFM1 (the blue one) / Re: PreenFM slows down in engine menu
« on: December 03, 2011, 10:30:36 AM »
80 minutes ?
Your solder skills are far better than mine.

Thanks for this first message in the Forum :-)
You found a bug. I just fixed it.

> Last Firmware is 1.01
> Fix a problem when changing the algo while playing more notes than the new algo can handle.

Thanks a lot,
Let me know if it's better now.


PreenFM1 (the blue one) / Welcome
« on: December 02, 2011, 09:07:03 PM »

Welcome to the official PreenFM Forum.
This is the place where we can discuss about your PreenFM Kit.

Don't hesitate to share your ideas, your problems, your patches, your suggestions.



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