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crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Jeff Suovanen
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| + | [* black] After hours of attempting to reverse engineer the Oura Ring 2 through the video, datasheets, and x-ray photos, here is what I think the remaining chips are in the ring: |
|---|---|
| + | [* red] The two IR LED drivers should be the same type, one for each IR LED. |
| + | [* orange] An operational amplifier for signal conditioning for the photo diode before the signal is sent to the microcontroller. (This is commonly done with these type of photo diode based health meters.) |
| + | [* black] If this is not a microcontroller, it could be a temperature sensor (not a thermistor). |
| + | [* yellow] A wireless charging IC predicted based on its surrounding components and location. |
| + | [* green] And finally a battery fuel gauge IC for probably determining battery health. |
| + | [* black] Predicted Block Diagram is on the 2nd image. |
| + | [* icon_note] I am not affiliated (not a staff member) to iFixit. |
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