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Messages - lokki

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PreenFM2 / Re: midi offset
« on: December 23, 2017, 12:08:15 AM »
hi xavier,

ok almost there. i added a cnst menu entry and it is showed in the matrix source menu. can you tell me where and how i should declare the constant value? i cannot set it in the enum directly it seems.

PreenFM2 / Re: midi offset
« on: December 22, 2017, 08:39:21 PM »
thanks xavier, that works!

i'm losing lfo1 of course but it should be easy enough to code in a constant as matrix source, will give this a go. might even be useful for other things.
thanks for the idea, obvious now that i think about it :-)

PreenFM2 / midi offset and EDIT: globaltune...
« on: December 22, 2017, 12:54:31 PM »
hi xavier, i know i brought this up before in different contexts. do you see any chance of including a midi offset to a specific timbre?

it would be super useful for live playing, since one can then centre the patches in the right octave instantly on program change, without the need to fiddle with the octave switch on a keyboard or similar. it would also allow to play multiple timbres with one controller by simply changing midi channel without touching the octave button.

the ideal way would be an offset that is adjustable by +-48 semitones, but even just the possibility to change octaves (say +-3) would be great.

i don't see a way to add this without changing the preset files. if it would be added to the combo files, that would be perfect, but adding another page in the instrument menu seems out of the question for you.

thanks for considering,

have a great christmas time

well the way it arrived the part (voltage regulator) was broken, it got hot and did output 2.05v instead of 5v. see this site, if you are interested: (search for regulator).

well it could be that the part was broken from the beginning or that there was a wall wart with bad polarity inserted at one point, that made it break. i don't know. if it was like this from the beginning it would be a little strange since they should test this before sending the synth to you...

just as a follow up:

the voltage regulator (7805) was bogus, it only outputted 2.05 v and got very hot... replaced that and the preenfm is alive with wall wart! since this was a revC board i also did the oled modifications and added a shield to reduce the high frequency noise...

so now i have two preen fm's , nice!

merry christmas to everybody else as well :-)

hi, i'm interested.

would this be the metal case from here?

also, what would shipping to switzerland cost? does not have to be quick...


PreenFM2 / Re: (compatibility?) questions
« on: December 01, 2017, 02:10:01 PM »
simply get a powerpack that you normally use to charge smartphones etc. connect via usb to the preenfm and you should be portable. i have no idea how long the battery will last though :-)

PreenFM2 / Re: Yellow OLED : high frequency solution
« on: November 27, 2017, 09:00:00 PM »
yes, that would be ok.

PreenFM2 / Re: PreenFM2 SMD version
« on: November 24, 2017, 10:47:49 PM »
one question, when one would want to build this, without smd soldering experience, would you sell preassembled boards with the stm32's on and burned firmware for the stm32f1? or what is the plan?

I might sell 1-3 of the 5 units I'll build presuming everything works fine and I haven't made any mistakes but don't count on me for getting into manufacturing these units.

People are soldering SMD parts all the time, it's not an impossible task. These are actually easy to solder SMD packages.
My only goal is to make this SMD version work and then publish all the files and firmware modifications so anyone can build them (or even start selling pre-soldered kits if they want to) .

ok, well if this works out ok, count me in!

PreenFM2 / Re: PreenFM2 SMD version
« on: November 24, 2017, 10:51:01 AM »
great! please post all updates...
one question, when one would want to build this, without smd soldering experience, would you sell preassembled boards with the stm32's on and burned firmware for the stm32f1? or what is the plan?


PreenFM2 / Re: PreenFM2 SMD version
« on: November 23, 2017, 09:00:18 AM »
since a lot of cpu will be saved by the extra controller that handles encoder etc. 44.1khz seems doable...

PreenFM2 / Re: Latest firmware : 2.08a
« on: November 21, 2017, 08:51:14 AM »
yeah i could live with that :) with 8timbres, i have everything i could wish for...

so the question remains how and where one could implement that transpose/offset? i think the combo preset would be a better place then the sound preset, because one may want to use the same sound in different combos. otoh if it is easier to implement in the sound presets, than that is ok as well. might as well save two versions of the same sound with different offset/transpose settings. but i think xavier is hesitant to change the preset file structure, because it will "break" all existing patches. so it should be easier to do in the combo file..

PreenFM2 / Re: Latest firmware : 2.08a
« on: November 20, 2017, 11:27:24 PM »
well, with the 8timbres version of the firmware that feature is not so pressing to me, since i can have 8channels in each preset.
but let's assume we are on the 4timbres version...
for live performances i have a controller that can send on 8 channels, since i never use them all on one preset (and since the channels represent different modes of the controller) it would be nice to switch the channels with the combo-presets. that way i can send a program change to the preenfm and all is adjusted for the next song/part whatever. reaching down to the preenfm and adjusting in the menu is of course no option :-)

but more importantly now (with the 8timbres version) is actually the offset of midi notes to me. so that i can play treble parts and bass parts on the same controller. let's say i1 has a bass part and i2 has a melody part loaded. i can then play both on my controller but i cannot switch octaves on the controller so fast. if i could adjust an offset for i2 i would set it to +24 and all incoming midi on i2 would be 2 octaves higher.

these two features (midi channel and offset) are very common on many multitimbral synths, and are usually part of the combo/multi preset, hence my suggestions. i'm simply used to that workflow and the preenfm would integrate much smoother into my setup... :-)

thanks for taking the time

PreenFM2 / Re: Latest firmware : 2.08a
« on: November 20, 2017, 10:46:23 PM »
what about pressing the inst button and pressing an encoder down, or inst and menu?

PreenFM2 / Re: Latest firmware : 2.08a
« on: November 20, 2017, 10:02:48 PM »
ok fair enough. i get that. so there must be some other way  8)
i will think about it...

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