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preenfm2 and preenfm3 / [solved] preenFM2 DIY-Kit: dark display / not booting / no usb-connection
« on: December 07, 2020, 07:11:06 PM »
Hello and greetings!
I ordered a kit from TubeOhm and happily began soldering. I'm by no means a pro nor very experienced. It's quite possible, that i did one or more blunders while putting it together. However, i double checked the solderings and i'm at a loss for what to do next.
The usual data:
PCB: Rev 6.2 - 10/2020
OLED-Shield: https://www.raystar-optronics.com/oled-character-display-module/20x4-oled-display.html
USB-Stick: Intenso Micro Line 4GB @Fat32
Stick-Contents: please see the attached screenshots
Further symptoms:
I powered it via USB, the little 3,3v LED lightens up and i can hear a power "click" on the lineout while (de)powering the unit as well as some hissing (Jumper default/0 Ohm) and way less hissing (Jumper at 22 Ohm). The internal type A USB-Port was measured at 5V. It completely fails to register as a USB-Device of any kind (midi, filesystem, dfu-device) in Windows.
I can provide some high-detail-photos, if necessary.
Any help would be greatly aprecciated.
thx1138
I ordered a kit from TubeOhm and happily began soldering. I'm by no means a pro nor very experienced. It's quite possible, that i did one or more blunders while putting it together. However, i double checked the solderings and i'm at a loss for what to do next.
The usual data:
PCB: Rev 6.2 - 10/2020
OLED-Shield: https://www.raystar-optronics.com/oled-character-display-module/20x4-oled-display.html
USB-Stick: Intenso Micro Line 4GB @Fat32
Stick-Contents: please see the attached screenshots
Further symptoms:
I powered it via USB, the little 3,3v LED lightens up and i can hear a power "click" on the lineout while (de)powering the unit as well as some hissing (Jumper default/0 Ohm) and way less hissing (Jumper at 22 Ohm). The internal type A USB-Port was measured at 5V. It completely fails to register as a USB-Device of any kind (midi, filesystem, dfu-device) in Windows.
I can provide some high-detail-photos, if necessary.
Any help would be greatly aprecciated.
thx1138