Oura ring wireless charger disassembled. Remove the rubbery surface at the bottom to access the screws. Open the Flex pcb lock to disassemble the flex charging coil, held precisely in place by the plastic casing. Note the thick ferrite on the back of the charging coil.
Clever assembly of light guide where you just push it in and the tiny arm holds it in place by pushing on the metal casing. Quite large LED for the rather low light output it gives?
Note the single sensor, likely an IR light sensor on the back. No idea what it does, but the black plastic might be IR transparent so the sensor could sense if a ring is present? Why not use a hall sensor or something simpler? Interesting nonetheless!
Gemini's identification of the chip seems plausible. But why use a $3 chip in such a volume application? Size isn't all that important here, so it's an odd choice. It controls a charger and a LED so why choose a full M0+ with 25 pins? Would be fun to know the reasoning for that choice. Big unmarked pads for programming each PCB.
