A2442 hinge sensor has liquid damage, not possible to repair, is there any alternate?
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Previously the fix had been to transplant the IC from the damaged flex to a replacement. However, someone has developed a tool to calibrate replacement angle lid sensors.
https://notebooknerds.de/en/nerd-tool-1/
It's 169 euro, but like all good tools, you'll make your money back on that in the first few repairs.
Also covered in Rossman's video on YT some time ago.
https://www.youtube.com/watch?v=Lxo6...=LouisRossmann
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This is a cool topic. Did not know about this issue till now. From a brief review, concerned about the programming hardware shared on the referenced logi.wiki.
The ESP8266 Node MCU board IO voltage vs. the lid angle sensor IO voltage. From the schematics, the lid angle sensor IO voltage is 1v8 for the SPI interface.
The ESP8266 Node MCU IO voltage appears to be 3v3. A proper interface should either operate the IO pins on the ESP8266 @ 1v8 OR apply a voltage level shifter to allow for 3v3 (Node MCU side) to communicate with the lid angle sensor @ 1v8.
Only if the lid angle sensor Vcc is permitted to operate @ 3v3, then the Node MCU voltage can remain @ 3v3 for the IO voltage.
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The sensor should work fine at 3.3V levels when its I/O domain supply is 3.3V. However, it must not be connected to the main logic board during the operation.OpenBoardView — https://github.com/OpenBoardView/OpenBoardViewComment
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