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Python client for the $20 Colmi R02 smart ring

tahnok.github.io

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Re: Python client for the $20 Colmi R02 smart ring

#91

Post by TechDebtDevin »

pydry wrote: post #43
TechDebtDevin wrote: post #38

I'm so excited to play with this. I just ordered one. I've gone through two Oura rings (I do not reccomend). I'm not sure this will be reliable but it cost me $14.00 not $300 and doesn't charge me monthly to access a mediocre api.

Oura rings do seem to have accurate tracking (unlike most smart watches). The data it collects and the subscription model look awful though. Im eagerly awaiting a ring sleep tracker like it which can be used offline with gadgetbridge or something.

Rings are not a mature form factor for these sensors/platforms.The $50.00 huawei band 8 is much more accurate than the $3-400 Oura ring. Check out the Quantified Scientist on YouTube[0].

[0]: https://m.youtube.com/@TheQuantifiedScientist

While I still love the ring form factor. As tacky as it sounds, I still wear my bricked Oura rings sometimes just because I like the feel lol. However, I would never trust Oura ((or any other device outside of Apple(unfortunately)) to gauge you health off their data. While Oura is directionally correct (like most of them), it never once detected low oxygen levels in my sleep and I have some of the worst central sleep apnea my doctor has seen.

Re: Python client for the $20 Colmi R02 smart ring

#92

Post by tahnok »

rkwz wrote: post #79

How safe are these cheap devices? Should one be concerned about battery exploding? Found some threads about this happening to Oura rings: https://www.reddit.com/r/ouraring/comments/s1fave/ring_batte...

I'm not very concerned, the battery is extremely small and I think it's potted in resin so it's not likely to get damaged

Re: Python client for the $20 Colmi R02 smart ring

#94

Post by WesleyJohnson »

inanutshellus wrote: post #86
Always42 wrote: post #5

At a quick glance this looks cool! I just have a hard time justifying things like this when the apple watch + iphone work so well. But i'm sure at some point the apple experience will get worse and push people to other OS like windows is

Everyone I know that has a smart watch charges it overnight. How do you propose using it to track sleep?

Your question implies the answer; charge it at different times and wear it to bed?

Re: Python client for the $20 Colmi R02 smart ring

#95

Post by renewiltord »

pards wrote: post #55
TechDebtDevin wrote: post #38

I'm so excited to play with this. I just ordered one. I've gone through two Oura rings (I do not reccomend). I'm not sure this will be reliable but it cost me $14.00 not $300 and doesn't charge me monthly to access a mediocre api.

IMHO companies should not be permitted to "sell" devices that require a subscription to function - that's a rental model - especially when there's only one service provider. Either sell the ring and include lifetime membership for free like Garmin [0], or _lease/rent_ the device on contract and charge a monthly fee. Don't do both The Oura starts at $469 CAD [1] plus $7.99 CAD per month [2]. [0]: https://connect.garmi…

IMHO companies should not be allowed to sell anything unless they will provide open hardware and open software and an irrevocable license to use their tooling to construct more.

Re: Python client for the $20 Colmi R02 smart ring

#96

Post by DaSHacka »

stavros wrote: post #39
DaSHacka wrote: post #32

Earlier quoted context omitted.

Dangerous Things (popular RFID/NFC implant makers) sell dual 125khz+13.56mhz clonable rings, but they're way overpriced ($130). I bought my "V1" back when they were still $60, and FWIW, if you know what you're doing, it does work. I've also seen some rings on Aliexpress that purport to support the same capabilites, but havent personally tried them out yet.

I've tried the Aliexpress ones, they work fine. I have like five of them.

Which vendor did you buy from?

When aquiantances ask me for recommendations I always tell them to look into Aliexpress over Dangerous Things as they're significantly cheaper, but I've also heard really mixed things about the various offerings on the site.

Re: Python client for the $20 Colmi R02 smart ring

#98

Post by swiftcoder »

michaelt wrote: post #68
fulafel wrote: post #54

So you just scan for devices and then read? There's no authorization involved, these just publish the readings wirelessly for all interested?

The basically-no-authorisation arrangement is somewhat common for modern bluetooth devices. It's problematic for things like keyboards used for entering passwords - but if my next door neighbour wants to snoop on my living room thermometer or someone wants to snoop on my heart rate strap as I jog past their house? It doesn't seem to be much of a problem, in practice. In the bad old days of bluetooth, loads of devices…

... doesn't the app set an encryption key after they pair?

The most similar device I've worked on is the various Oculus devices. Which will also accept bluetooth connections from absolutely everyone, but the first time you connect you store an encryption key that is used to secure all subsequent comms.

Re: Python client for the $20 Colmi R02 smart ring

#99

Post by stavros »

DaSHacka wrote: post #96
stavros wrote: post #39

Earlier quoted context omitted.

I've tried the Aliexpress ones, they work fine. I have like five of them.

Which vendor did you buy from? When aquiantances ask me for recommendations I always tell them to look into Aliexpress over Dangerous Things as they're significantly cheaper, but I've also heard really mixed things about the various offerings on the site.

The only time I've been scammed was when I bought a 16 TB USB drive for $3, or a $10 mosquito bite thing that didn't work. Basically, if the thing sells for much cheaper than anywhere else, it's a scam, otherwise you're OK.

I've bought from Ali hundreds of times, maybe thousands of items. The quality isn't always great (what can you expect for the price?), but it's very rarely scams.

Stay away from microSD cards, though.

Re: Python client for the $20 Colmi R02 smart ring

#100

Post by swiftcoder »

dsign wrote: post #30

The hardware is getting so cheap! But the software... I bought for $20 a bed lamp that comes with led lights, bluetooth receiver, clock and alarm clock, and wireless charging for my iphone. It has a microphone to stream all my conversations god knows where, though its purported purpose is to listen me sing and pulse the lights according to the pitch. It comes with a convenient app to set the clock and the lights. But…

> its purported purpose is to listen me sing and pulse the lights according to the pitch

I'm stunned there are enough customers with good enough pitch control to make that a viable market

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