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Messages - dzenat

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PreenFM2 / Re: Strange behaviour starting up
« on: July 20, 2019, 03:49:57 AM »
Seems like after many tries, i finally manage to start up fine. But when playing with it, the screen display strange letterings....I don't understand what actually went wrong there...  to the developer, any ideas?

PreenFM2 / Strange behaviour starting up
« on: July 19, 2019, 01:05:10 PM »
Hi there,

I managed to update the firmware to 2.10. nice.
Then I made a mistakte by unpluging the usb cable out and now i can't even start up the preenfm.

The blue lights blink but nothing happens on screen's all black.

Is there a reset some where to reset the system? or should I reload the firmware? I made a copy of firmware 2.08 before upgrading...

Any help?

PreenFM2 / (SOLVED) Strange Behaviour of Display
« on: May 07, 2018, 04:34:20 PM »
--- Missing OLED Resistor!

Hi there,

Finally the preenFm arrived today and I managed to finish building it up in a couple of hours. And when i power up the preenFM with usb connected to my computer... I get a strange behaviour with the display. It's bright at the start but when I click buttons or turn the encoders, the brightness of the display changes from bright to dim in a step like manner. After a few times, it goes back to bright.

I thought it was because i left out the 68ohm resistor besides the 10k resistor, took it apart and solder it on with a 22ohm resistor as I think I have the OLED version, NHD-0420DZW-AY5. But it doesn't change any thing. The display still dims.

Any ideas?

..Still haven't tested audio or midi in....

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