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Boosted by cstanhope@social.coop ("Your friendly 'net denizen"):
kbob@chaos.social ("Kernel Bob") wrote:
Today we got our dishwasher fixed under warranty. To diagnose it, the tech stuck a photosensor+magnet onto the front panel over the green status LED and started reading diagnostics. It turns out the status LED is actually a serial port*, and it's continually transmitting status.
I can think of so many gadgets that could and should use this trick...
*It's probably something other than regular serial -- a UART's TX would flicker. I don't know any details.