Show HN: Every Breath You Take – Heart Rate Variability Training

Re:Show HN: Every Breath You Take – Heart Rate Variability T... by p-e-w on Sunday September 17, 2023 @12:18AM (#37541481)

It's pretty amazing how much data this relatively cheap device makes available over BLE, and how easy it is to access that data.

Is there a list of health monitoring devices that can be read programmatically without requiring proprietary software or uploading data to the cloud?

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Re:Show HN: Every Breath You Take – Heart Rate Variability T... by kbre93 on Sunday September 17, 2023 @02:55AM (#37542231)

I think most bluetooth low energy devices can be connected to quite easily programmatically as long as you know the data specification. Polar use to publish their data spec on their website but took it down a few years ago so I had to search around to find it.

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Re:Show HN: Every Breath You Take – Heart Rate Variability T... by rvdca on Sunday September 17, 2023 @02:56AM (#37542240)

I was hoping to intercept and reverse-engineer the protocol of the Oura rings.

For some reason, I thought this kind of device would attract a lot of hackers given the platform capabilities but I could not f8nd any other documented attempt except the really thorough iFixit (destructive) teardown : https://www.ifixit.com/Teardown/Oura+Ring+2+Teardown/135207

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Re:Show HN: Every Breath You Take – Heart Rate Variability T... by Lash-L on Tuesday September 19, 2023 @09:51AM (#37569930)

I know the device uses BLE - I'd start with seeing if there is any data included in the BLE broadcast

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