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preenfm2 and preenfm3 / Few issues
« on: September 28, 2020, 09:39:54 AM »
Hey there,
I have just finished my preen fm2, and it looks like it is working quite well, not perfect but well, but i have encountered a few problems and confusions during assembly.
First of all, i bought the vandaal DIY kit with blue metal case and blue screen (i have no idea if it is OLED or LED) so this was my first confusion.
The PCB looks like the R5 one and it is white, but i had a few components which was different looking frome the ones in the build instruction.
The USB stick from the kit was not working and i have replaced it with other one which works fine. The preen boots, I can hear the sound, midi works as well, but i have issues with screen.
It is flickering, when changeing parameters, and when i connect midi, it flickers in sync with the midi clock.
It is powered via usb cable.
I Also have some parts left which I didnt know what to do with really. Especially with the metal plate, and i was unsure what to do in this step:
Can You help me somehow?
https://www.easypaste.org/file/jUCvkOnH/image0.1.jpeg?lang=pl
https://www.easypaste.org/file/sj95qwDY/image1.1.jpeg?lang=pl
I have just finished my preen fm2, and it looks like it is working quite well, not perfect but well, but i have encountered a few problems and confusions during assembly.
First of all, i bought the vandaal DIY kit with blue metal case and blue screen (i have no idea if it is OLED or LED) so this was my first confusion.
The PCB looks like the R5 one and it is white, but i had a few components which was different looking frome the ones in the build instruction.
The USB stick from the kit was not working and i have replaced it with other one which works fine. The preen boots, I can hear the sound, midi works as well, but i have issues with screen.
It is flickering, when changeing parameters, and when i connect midi, it flickers in sync with the midi clock.
It is powered via usb cable.
I Also have some parts left which I didnt know what to do with really. Especially with the metal plate, and i was unsure what to do in this step:
Quote
If you have a PCB revision R5d, you’ll have an additional resistor named Oled on the right of the above picture .So i puted a 22ohm there.
Populate it with a 22 ohm if you have an OLED display or shortcut it with a resistor pin if you have a LCD display.
Can You help me somehow?
https://www.easypaste.org/file/jUCvkOnH/image0.1.jpeg?lang=pl
https://www.easypaste.org/file/sj95qwDY/image1.1.jpeg?lang=pl