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11
PreenFM2 / Re: possibility of obtaining a new pcb? or schematic?
« Last post by Xavier on April 12, 2017, 11:07:28 AM »
actually it was xavier (as usual) that posted the right schematic. i was just doing stupid copying of a GitHub link. :-)

You made me realize i still haven't put the real PCB on github  ;)
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PreenFM2 / Re: USB is only good for power supply
« Last post by Xavier on April 12, 2017, 10:11:39 AM »

Hi,

Is the USB midi enabled ?
See 3.1 here, first setting :
http://ixox.fr/preenfm2/manual/menu-mode/

Xavier
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PreenFM2 / USB is only good for power supply
« Last post by kx3 on April 12, 2017, 07:16:25 AM »
Hi, my PreenFM2 doesn't show in any of 3 computers (win7 win10 and Linux Ubuntu) neither as Midi interface or as USB stick when it boots with button 1 pressed.
However it powers ON and works with USB power.
I built it and flashed its bootloader to v1.11 a few months ago with the mini-usb.

I've try with several USB Cable and USB-midi is turned on in system.
Running firmware 2.07.

Any clue?
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PreenFM2 / Re: possibility of obtaining a new pcb? or schematic?
« Last post by lokki 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. :-)
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PreenFM2 / Re: possibility of obtaining a new pcb? or schematic?
« Last post by kirkwood on April 09, 2017, 07:05:28 PM »
wicked. thank you so much Lokki! The pcb png is a big help. I will try manually jumping these pads, hopefully next week.
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PreenFM2 / Re: possibility of obtaining a new pcb? or schematic?
« Last post by lokki on April 08, 2017, 08:09:36 PM »
haha true, sorry!!
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PreenFM2 / Re: possibility of obtaining a new pcb? or schematic?
« Last post by Xavier on April 07, 2017, 10:40:43 PM »
Lokki, this is the preenF405 schema, aka the MCU/CPU board  ;)

Kirkwood, I still have to put the PCB in the github repository.
In the meantime you can download it from the download page on the preenfm2 site.
Here is the PCB dirrect download link :
https://www.dropbox.com/s/7k68bagutq6ri52/PreenFM2_R5c_Kicad.tgz?dl=1
You'll need kicad (http://kicad-pcb.org/) to load the project.

I attached a png that may help you.
Jumpers should work.

I don't think you can have broken anything.
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PreenFM2 / Re: possibility of obtaining a new pcb? or schematic?
« Last post by lokki 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.
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PreenFM2 / possibility of obtaining a new pcb? or schematic?
« Last post by kirkwood on April 07, 2017, 04:48:48 AM »
I totally borked my build of the preenFM2. I had soldered the 22uF and 220uF capacitors in backwards. I plugged it in, obviously didn't work. Double checked my work and re-installed them.

The second time I installed them in the wrong spots. Correct polarity but swapped the 22uF with the 220uF. I plugged it in to see if it would work... then double checked everything and realized my error.

Third times a charm right? Then upon removing them again the pads are gone, no where to solder into...

I'm wondering about a couple things.

1. Did I blow up any components?
2. Is there a schematic? i could possibly run jumpers...
3. What would it take to acquire a new pcb?
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PreenFM2 / Re: Stm32F4Discovery port
« Last post by norbim1 on April 06, 2017, 04:08:32 PM »
Hi, for the first time flashing:

[/quote]
Use the STM32 ST-LINK utility via the mini USB on the debugger side of the board.

http://www.st.com/content/st_com/en/products/embedded-software/development-tool-software/stsw-link004.html

Norbim

It should be STM32F407 on the board. Heere you can check the correct Discovery version:

first check the original STMicroelectronics product page to know the orginal version:
http://www.st.com/content/st_com/en/products/evaluation-tools/product-evaluation-tools/mcu-eval-tools/stm32-mcu-eval-tools/stm32-mcu-discovery-kits/stm32f4discovery.html
I bought all my Discovery boards from Farnell (farnell.com). The part number is STM32F407G-DISC1.

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