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Messages - Xavier

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1081
PreenFM2 / Re: Continuing the discussion from the Mutable Instruments forum
« on: November 19, 2012, 10:36:19 AM »

Yes, maybe optional.
But as the mk2 will be stereo, removing it would simplify the schema.

I cannot find a use case where the volume is not to the maximum.

1082
PreenFM1 (the blue one) / Re: Self Source BOM
« on: November 18, 2012, 09:33:55 PM »

This one is just a noise filter that can be usefull with bad USB power.
I've read some theory about it but never really find the result really obvious.
Shortcut it if you cannot find one...

From memory, between 10uH and 20uH should be OK... I bought mine on ebay.
The whole preenFM currant go through it so it should accept something like 200mA.

Xavier

1083
PreenFM2 / Re: Continuing the discussion from the Mutable Instruments forum
« on: November 18, 2012, 09:24:19 PM »

I'm not sure it will have any kind of anti-aliasing... i've never really worked on this problem.

Does any-one find the volume knob usefull ?
I'm thinking of getting rid of it and adding a 8th push button.

1084
PreenFM1 (the blue one) / Re: Loading patches via Sysex
« on: November 15, 2012, 01:54:54 PM »

It starts displaying a counter : 1/128 2/128 etc....
Until 128/128.

I've just sent you an email with the bank file in case you have a corrupted file and that your browser use your cache.

Xavier

1085
PreenFM1 (the blue one) / Re: Loading patches via Sysex
« on: November 15, 2012, 01:18:29 PM »

Yes, maybe a file problem.
Where did you find the file you use ?

1086
PreenFM1 (the blue one) / Re: Loading patches via Sysex
« on: November 15, 2012, 10:26:42 AM »
Hi Paul,

If nothing changes it means that the PreenFM does not receive the SysEx starting bytes.
Could you try with the demo of Reaper http://www.reaper.fm/

1. Chose a track. Be sure the midi out targets your Preen by playing a few notes.
2. Set the Preen in waiting "Sysex..." mode.
3. Drag and drop your sysex file in the Reaper track
4. Play ithe track

Other question that could help, does it work with a single patch sysex ?

Xavier

1087
PreenFM1 (the blue one) / Re: Cheaper chinese clone of Maple mini.
« on: November 10, 2012, 03:06:07 PM »
Hi shiftr,

"Found Runtime: [0x1eaf:0x0003] devnum=0, cfg=0, intf=0, alt=0, name="DFU Program RAM 0x20000C00""

Seems like you try to upload the program in RAM instead of Flash.
As the RAM is only 20Kb it quickly stops.
I would say "-a1" is missing from your dfu-util parameters.

See the following *.cmd files :
http://xhosxe.free.fr/PreenFM/firmware/

Xavier

1088
PreenFM1 (the blue one) / Re: hardware upgrade option
« on: November 07, 2012, 11:22:46 AM »
Hi,

I don't think you'll find an affordable solution.
Neither regarding the price nor the time it will take you to make it work.
The easiest solution is to build 4 PreenFM.... ;-)

You won't find any board more powerfull than the maple mini that you can plug in the PreenFM and have it working out of the box.

If you want to experiment with more powerfull MCU you may want to give a look at the discovery board, specially this one :
https://www.google.com/search?q=stm32f4+discover
But don't expect to run the PreenFM firmware out of the box on it... STM32F1 and STM32F4 are not very compatible.

Xavier

1089
PreenFM1 (the blue one) / Re: Did I bag the last PCB?
« on: October 23, 2012, 10:28:41 AM »

Cool.. let us know how it goes.  :D

1090
PreenFM1 (the blue one) / Re: Cheaper chinese clone of Maple mini.
« on: October 23, 2012, 10:27:54 AM »

I saw that also on the MI forum...
I'm looking forward to see how this maple mini clone behave.

Xavier

1091
PreenFM1 (the blue one) / Re: Did I bag the last PCB?
« on: October 17, 2012, 02:07:23 PM »
Lucky me.
Any ideas for a new project?

It's much too early to talk about it...  ;)

1092
PreenFM1 (the blue one) / Re: Did I bag the last PCB?
« on: October 17, 2012, 01:30:21 PM »
ps. did I bag the last full kit then?
Jeremy

Almost... there were one after you ;-)

1093
PreenFM1 (the blue one) / Re: PreenFM in a box!
« on: October 17, 2012, 11:56:30 AM »

 :D Thanks for the new pictures....
The more i see it, the more i love it !
Reminds me a vintage videogame from the early 80.

Xavier

1094
PreenFM1 (the blue one) / Re: Did I bag the last PCB?
« on: October 16, 2012, 01:05:56 PM »

Hello,

I sold the last kit yesterday and several PCBs have been sold during the night.
The PreenFM shop is totally empty.

I didn't realize the maple mini was so hard to find.
3 in sock on seed studio   :o
http://www.seeedstudio.com/depot/maple-mini-p-861.html?cPath=132_137
And out of stock on sparkfun ?

I must have one maple mini left.... have to check to be 100% sure.
PM me if you're interested. I can sell it for 35E shipping included.

For the case, it's very easy to have it make by formulor.de
Get the svg files here :
https://sites.google.com/site/preenfm/download/files

Xavier

1095
PreenFM1 (the blue one) / Re: PreenFM in a box!
« on: October 16, 2012, 08:30:54 AM »

Hey your PreenFM is very... funky :-)
I love it !

The algos at the bottom look like a  flower field...
If you have time, i would love a picture of your preen switched on...

How did you do this metal box ? did you do it all yourself ?
Or did you start from a premade metal enclosure ?

Xavier

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