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Messages - lokki

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31
PreenFM2 / Re: midi channel for combo program change
« on: July 31, 2017, 10:00:03 PM »
 thanks. i finished it all and it works nicely! i tried to push it to my custom preenfm2 firmware git, but i did not suceed. find attached the changed files, in case you want to include that feature...

32
PreenFM2 / Re: midi channel for combo program change
« on: July 27, 2017, 05:17:03 PM »
ok i will attempt this myself, seems straightforward. i already have a version with hardcoded midichannel 1 for general modulation.

xavier, can you tell me where in the code i find the global menu? so i can try and add the value there.

33
PreenFM2 / midi channel for combo program change
« on: July 27, 2017, 12:02:21 AM »
what is the midi channel for program change?

what is the midi channel to change a combo program?

 is it just the first midi channel set in the menu?

it would be great if there was a global midi channel setting, that can receive program change and is independent from the settings of the instruments. (so for example instruments set to channel 2 to 5 and global midi channel 1)

also to think things further, it would be great if general cc messages could also arrive on the global channel and be spread to the four instruments. (for example, breath control on channel 1 would be applied to all 4 instruments)

this would decrease the midi messages you have to send and would also comply somewhat with the new mpe midi standard.


34
PreenFM2 / Re: possibility of obtaining a new pcb? or schematic?
« on: April 10, 2017, 11:17:25 AM »
actually it was xavier (as usual) that posted the right schematic. i was just doing stupid copying of a GitHub link. :-)

35
PreenFM2 / Re: possibility of obtaining a new pcb? or schematic?
« on: April 08, 2017, 08:09:36 PM »
haha true, sorry!!

36
PreenFM2 / Re: possibility of obtaining a new pcb? or schematic?
« on: April 07, 2017, 04:28:36 PM »
schematic is here:

https://github.com/Ixox/preenfm2/tree/master/hardware/preenF405

yeah, jumpers should be possible.

37
PreenFM2 / Re: preenFM is going to Eurorack
« on: February 15, 2017, 09:57:12 PM »
xavier i get this when i try to compile the adc branch:

build/PreenFM_irq.o: In function `TIM2_IRQHandler':
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_irq.c:236: undefined reference to `TIM_ClearITPendingBit'
build/PreenFM_init.o: In function `ADC_Config()':
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:137: undefined reference to `TIM_TimeBaseStructInit'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:144: undefined reference to `TIM_TimeBaseInit'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:145: undefined reference to `TIM_SelectOutputTrigger'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:146: undefined reference to `TIM_ITConfig'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:167: undefined reference to `DMA_StructInit'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:186: undefined reference to `DMA_Init'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:187: undefined reference to `DMA_Cmd'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:190: undefined reference to `ADC_StructInit'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:191: undefined reference to `ADC_CommonStructInit'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:194: undefined reference to `ADC_Cmd'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:195: undefined reference to `ADC_DeInit'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:205: undefined reference to `ADC_CommonInit'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:215: undefined reference to `ADC_Init'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:219: undefined reference to `ADC_RegularChannelConfig'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:220: undefined reference to `ADC_RegularChannelConfig'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:221: undefined reference to `ADC_RegularChannelConfig'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:222: undefined reference to `ADC_RegularChannelConfig'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:225: undefined reference to `ADC_DMARequestAfterLastTransferCmd'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:228: undefined reference to `ADC_DMACmd'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:231: undefined reference to `ADC_Cmd'
/home/lokki/Downloads/preenfm2-adcIn/src/PreenFM_init.c:234: undefined reference to `TIM_Cmd'
collect2: error: ld returned 1 exit status
Makefile:247: recipe for target 'build/p2_2.06o.elf' failed

38
PreenFM2 / Re: preenFM is going to Eurorack
« on: February 15, 2017, 09:46:29 PM »
i can compile the firmware for you if no one else does :-)

39
PreenFM2 / Re: Acrylic case online
« on: February 10, 2017, 11:05:41 PM »
nice!

40
PreenFM2 / Re: Acrylic case online
« on: February 10, 2017, 02:40:01 PM »
the extra work involves mostly cleaning the file up, some lines are double when they should be single, etc. i did use the design by frank for my wooden case (http://ixox.fr/forum/index.php?topic=69173.msg71826#msg71826), but in the end i ended up redoing most of the file, since it was a pain to edit everything.

41
PreenFM2 / Re: USB key bricked story
« on: December 26, 2016, 12:25:28 PM »
for some usb sticks there is a tool from the manufacturer to get it back running... what brand is the one supplied with the kit?

42
PreenFM2 / Re: envelopes: to click or not to click that is the question
« on: November 18, 2016, 10:50:57 AM »
hi xavier,

following up on this.

is there a way to disable the stealing fade (replace noteonWithoutPop wit noteon) and still have glide mode working?

thanks!

43
PreenFM2 / why fm and not pm
« on: October 11, 2016, 12:13:35 AM »
hi, this is more of a general question, out of interest...

why was there true fm choosen for the preenfm and not pm as on most other "fm" synthesizers? true fm is generally harder to implement, no?


44
PreenFM2 / Re: New Build Issues
« on: October 04, 2016, 08:44:32 AM »
you can make a shield for yourself, see here:

http://ixox.fr/forum/index.php?topic=69159.0

i made one with 128 layers, just to be sure :-) while the noise is still there when i listen to the synth (as in put my head close to the unit and listen), it is completely gone on the audio-path. you have to adjust the position while the preenfm is running so you can see/hear when the frequency disappears.

that is just in case the metal case mod does not eliminate all the noise.

45
PreenFM2 / Re: A possible all in one synth ??
« on: September 30, 2016, 11:41:07 PM »
Hello there..
I guess this question is mainly for Xavier..
I would like to built an all in one synth, better than an expander..
I would like to have in a single box, the keyboard, 2 or 3 wheels (bend, mod, plus an extra one), and an input for breath controller (in fact, an external potentiiometer)..
I already have a good 3oct keyboard (Kimber Allen, with 2 contacts per key, which I bought in the last century, but never buiilt..)
The questions are..

1) Does anyone here have a good scheme, to share ? So that I could build my own controller..

But I could as well use an already made master keyboard..

2) In both cases, I would want the "internal" keyboard to control the Preenfm2, of course.. So I would connect its midi out to the tmidi in of the preenFM2.. Simple and basic.. But I would also want to be able to command the Preenfm2 with an external device (Other keyboard, sequencer, or anything..).. So of course, I would need a midi merge..
Does anyone have a good scheme for a MIDI merge circuit ?? A real midi merge, able to manage at least two inputs, even if they send midi codes simultaneously..

3) The question is for Xavier.. Would it be possible to have the preenfm2 merging 2 or more midi inputs, by itself, without using any midimerge ??

3) The next question is for Xavier again.. Would it be possible to have the Preenfm2 doing all this :   reading the (open/close) contacts of the bare keyboard, translating into note on/note off/ velocity.. Reading the status of theb  wheels and external potentiometer, turning these into commands value.. Using all this to command its own sound generating module.. accpeting incoming midi data, and merging them with its own command values.. and eventually, sending those data to a midi out plug ??
What any compact combo synth can do, in fact..

Maybe this topic has already been talked about, I don't know..

Have a nice weekend..
Thierry

let me address a few of those questions,

for midimerge you will need a microcontroller, since you effectively have to merge two serial data streams into one, so you have to "decode" both midistreams and reencode them into one. so no easy scheme, sorry. there are many arduino circuits and programs that do that. you can however control the preenfm from usb midi and midi din, so maybe that is an option? there is also a usb midi to serial midi converter for arduino, so that could work as well. let me know if you want to go that route, i can give you some links.

number 3 is VERY unlikely.

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