Author Topic: preenfm3 / preenfm2 R6 : first PCBs available  (Read 1990 times)

solipsvs

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Re: preenfm3 / preenfm2 R6 : first PCBs available
« Reply #30 on: November 03, 2020, 04:46:34 PM »
also, why can i not pitchbend a full octave?  it seems i am only able to bend up to 10 semi tones?  this makes it hard to map a pitchbend melody...

Xavier

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Re: preenfm3 / preenfm2 R6 : first PCBs available
« Reply #31 on: November 03, 2020, 06:58:46 PM »
cool!  it works now.  but i had to take the thumb drive out to access it as my win10 computer made the usb drive inserted sound when i tried to enable usb drive access over the preen’s usb port but it never showed up in explorer.

What pfm2 bootloader did you install.
I published a 1.12 version which does not work.
Sorry about that, but the "USB access" from the computer should work with 1.11 and 1.13.
1.13 bootloader is included with the latest 2.20 zip file.

Xavier

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Re: preenfm3 / preenfm2 R6 : first PCBs available
« Reply #32 on: November 03, 2020, 07:16:45 PM »
also, why can i not pitchbend a full octave?  it seems i am only able to bend up to 10 semi tones?  this makes it hard to map a pitchbend melody...

You can use a second entry with same source and a multipler of 2, they will be added and you'll get the octave.

solipsvs

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Re: preenfm3 / preenfm2 R6 : first PCBs available
« Reply #33 on: November 04, 2020, 12:18:32 AM »
cool!  it works now.  but i had to take the thumb drive out to access it as my win10 computer made the usb drive inserted sound when i tried to enable usb drive access over the preen’s usb port but it never showed up in explorer.

What pfm2 bootloader did you install.
I published a 1.12 version which does not work.
Sorry about that, but the "USB access" from the computer should work with 1.11 and 1.13.
1.13 bootloader is included with the latest 2.20 zip file.

im talking about the one i bought from ardi.  how do you update just the bootloader?

interesting solution for the pitchbend, i prob wouldnt have thought of that!

Xavier

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Re: preenfm3 / preenfm2 R6 : first PCBs available
« Reply #34 on: November 04, 2020, 08:45:12 AM »
@solipsvs I moved your latest message here :
http://ixox.fr/forum/index.php?topic=69716.0

Because i think flashing the bootloader deserve its own thread for the futur.

forestcaver

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Re: preenfm3 / preenfm2 R6 : first PCBs available
« Reply #35 on: November 09, 2020, 10:36:56 PM »
I’ve just noticed the preenfm3 controlboard has been revised. I was about to buy parts to build the fm3 having just received boards. Are there any hacks or different parts needed on the old boards? (I’m happy desoldering/using kynar wire on smt so if there is any benefit in hacking the old board I’m happy doing it - I havent compared the old and new schematics yet...)

Xavier

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Re: preenfm3 / preenfm2 R6 : first PCBs available
« Reply #36 on: November 10, 2020, 07:47:49 AM »
I’ve just noticed the preenfm3 controlboard has been revised. I was about to buy parts to build the fm3 having just received boards. Are there any hacks or different parts needed on the old boards? (I’m happy desoldering/using kynar wire on smt so if there is any benefit in hacking the old board I’m happy doing it - I havent compared the old and new schematics yet...)

Controlboards are all 100% compatible (unless one day i announce a different one) and the components are at the exact same place.
Preenfm3 firmware has evolved and the new one has correct labels on the button (MENU=>SEQ).  An other small aesthetic change.


j4ustin

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Re: preenfm3 / preenfm2 R6 : first PCBs available
« Reply #37 on: November 10, 2020, 06:56:24 PM »
Does anyone know what power cable / vc to use for the preenfm3? I'm getting a ground loop noise using my usb cable and want to switch to external power.

Xavier

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Re: preenfm3 / preenfm2 R6 : first PCBs available
« Reply #38 on: November 10, 2020, 11:37:09 PM »
Does anyone know what power cable / vc to use for the preenfm3? I'm getting a ground loop noise using my usb cable and want to switch to external power.

USB power goes directly to the VCC so it can be very noisy.
Must be a 9V DC / 1A (min) / center positive
Like this
Center positive logo is visible here

lokki

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Re: preenfm3 / preenfm2 R6 : first PCBs available
« Reply #39 on: November 18, 2020, 01:18:29 PM »
hi xavier,

would it be possible to publish a pdf file of the top (and ideally back) part of the case? i will make my own case from wood and aluminium and could use a drilling template. or are there any free programs to export the stl files to pdf? some online tools i tried failed to produce any result.

solipsvs

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Re: preenfm3 / preenfm2 R6 : first PCBs available
« Reply #40 on: November 18, 2020, 03:24:40 PM »
Does anyone know what power cable / vc to use for the preenfm3? I'm getting a ground loop noise using my usb cable and want to switch to external power.

check this product out:

https://hifimediy.com/product/usb-isolator/?fbclid=IwAR0bWtLYyGQYA68oXOtW8dP9BhypuCLzFdQptIXVVbgeHzc_OUXcQgCNSO4