Author Topic: USB is only good for power supply  (Read 184 times)

kx3

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USB is only good for power supply
« 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?

Xavier

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Re: USB is only good for power supply
« Reply #1 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

kx3

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Re: USB is only good for power supply
« Reply #2 on: April 13, 2017, 01:47:09 AM »
Yes it's on

Xavier

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Re: USB is only good for power supply
« Reply #3 on: April 13, 2017, 05:15:45 PM »
I built it and flashed its bootloader to v1.11 a few months ago with the mini-usb.

I just realized you wrote "Mini-USB" ?
So you have a CERB40 cpu board ?

You need a wire to link the case USB to the CERB40 mini USB.
Search for CERB40 in this old-PCB page :
http://ixox.fr/preenfm2/build-it/the-pcb/


kx3

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Re: USB is only good for power supply
« Reply #4 on: April 14, 2017, 04:27:43 AM »
Doh!

I thought it was only used to flash the bootloader....


Xavier

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Re: USB is only good for power supply
« Reply #5 on: April 15, 2017, 12:37:02 PM »
Doh!

I thought it was only used to flash the bootloader....

I have many of this DIY mini USB connectors, PM me if you need one.