Hi, I tried to solder a header on the GND+TX+RX pins of my Dwarf and as soon as I did that the buttons on the controller board stopped working. It starts as usual and the display shows things but it does not respond to any button presses. The Web UI works fine as well
My board revision is MDW-PX30-V2.0
I’ve started scraping off the coatings of the traces. When the board is inserted, RX is pulled low and TX is floating, but when the board is not inserted both are floating
My goal was to get to u-boot but now it’s to restore the controller’s function. Any help would be appreciated
It seems that you were experimenting a bit over there
Based on your description, I assume that you damaged the controller board.
What were you trying to achieve?
Have you checked the hardware design files for the MOD Dwarf? You can find them here
Yes, I got all the hardware files, checked out the 2.0 revision, opened it in KiCad (I was obviously not the 3.0 revision)
I’m sure there is damage, but it should be on the “bottom board” since the controller board was unplugged. All I did was solder header pins in the open slots, reassemble it, and then the buttons stopped buttoning. I then de-soldered the pins. Yesterday I bypassed the RX and TX holes with jumper wire from the inline resistors (R12, R13) to the scraped traces which definitely go to the SODIMM pins but still no buttons. I haven’t hooked it up to an oscilloscope yet
So do you think it’s likely that I ESDed the UART on the PX30 board? or maybe the controller board?
What I was/am trying to accomplish is control of the device, which necessitates access to the u-boot console. Then for example, I can repartition and put a whole armbian on the device
