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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

#101

Post by inanutshellus »

WesleyJohnson wrote: post #94
inanutshellus wrote: post #86

Earlier quoted context omitted.

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?

Remember the context of my quip is in reply to "I don't see the value in the ring, just buy a $1200 watch and phone combo and make sure you charge your watch while you're out living your life, not when you're asleep."

Still seems pretty clear as to why someone would find value in the ring. Another poster says he charges his ring while he showers. It's that quick. I'm not knocking smart-*, just reacting to the dismissive "why would anyone want this" attitude of GP.

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

#102

Post by 0xEF »

flax wrote: post #4
vosper wrote: post #2

I couldn’t find it on the product page: any idea if this has a vibrating alarm? I’m in the market for something to wake me up without disturbing my partner

it does not.

Well, they missed a huge opportunity to break into the discrete sex toy market, then.

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

#103

Post by bg0 »

TechDebtDevin wrote: post #91
pydry wrote: post #43

Earlier quoted context omitted.

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…

The comments referencing quantified scientists do so in a somewhat negative light. But it should be noted that in his research, he points out that the oura is one of the top trackers for sleep[0]. This is not the only video that he praises the oura for being pretty damn good based on other devices.

[0]: https://www.youtube.com/watch?v=niLuR68YleI 2min41sec

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

#104

Post by wongarsu »

swiftcoder wrote: post #98
michaelt wrote: post #68

Earlier quoted context omitted.

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.

If it did that then losing your phone, deleting the app's storage or moving to a different phone without transferring the app's storage would brick the smart ring.

Oculus decides are pretty big, I assume they have buttons that allow you to recover from that. This ring doesn't.

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

#107

Post by OkGoDoIt »

updatedprocess wrote: post #35
OkGoDoIt wrote: post #19

Earlier quoted context omitted.

That has also been my experience with this model. I’ve been using it for about a month now. I originally planned on trying to use the accelerometer data over Bluetooth to build a custom control input for Frame smart glasses, but I got busy and never got around to that. But I’ve been wearing it as a health tracker and the heart rate and sleep tracking seem pretty accurate relative to my Apple Watch, and the blood oxyg…

Some reviews say it's a little bulky to wear. It's that your experience?

It's a bit thicker than my normal wedding ring, but its also a lot lighter weight. I don't really notice the difference enough to mind. I suppose if you're not already used to wearing a ring it might take more effort to get used to.

They come in different sizes and they don't necessarily correspond to standard USA ring sizes, so it takes some effort to measure and make sure you get the right one. But the effort is worth it to get a comfortable fit. And they are cheap enough that you can always buy multiple different sizes. I think I paid like $11 for mine on Taobao with free shipping (part of that may have been a discount since I was a new customer).

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

#108

Post by TechDebtDevin »

bg0 wrote: post #103
TechDebtDevin wrote: post #91

Earlier quoted context omitted.

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…

The comments referencing quantified scientists do so in a somewhat negative light. But it should be noted that in his research, he points out that the oura is one of the top trackers for sleep[0]. This is not the only video that he praises the oura for being pretty damn good based on other devices. [0]: https://www.youtube.com/watch?v=niLuR68YleI 2min41sec

For sleep phases and mediocre oxygen levels and bad HRV readings. And on his blog he says he does use it for his sleep tracking, so yeah. I'm not saying it's terrible but for sp02 I can confidently say it's terrible. I use actual nighttime pulse oximeters from Wellue which is also a (larger) ring form factor[0]. and I can see the large dips in O2 for example, the Oura will not detect this despite going into the low 80%s (very low) when my mask falls off.

What bothers me about these sleep tracking devices is they are often "on the low" reccomended as ways to detect sleep problems like sleep apnea. This might not be done by the companies themselves but it is certainly done by influencers who are hired to promote these products. If someone were to buy an Oura ring because they snore (one of their marketing tactics) to try and see if they have sleep apnea there is a high chance that the app would tell them their oxygen levels are fine and then they'd never go get a sleep study (which cost less than an Oura ring with home kits now). Assuming this caused them to never follow up on that snoring again, Oura's (and other companies) marketing and mediocre tech would quite literally shaved years off this persons life.

When I asked my doc if sleep apnea could kill me if left untreated, he responded, "It WILL kill you if we leave it untreated."

[0]:https://getwellue.com/pages/o2ring-oxygen-monitor

Edit: I do believe in 5 years Oura and other similar products will have figures this out. Just not yet.

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

#109

Post by swiftcoder »

wongarsu wrote: post #104
swiftcoder wrote: post #98

Earlier quoted context omitted.

... 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.

If it did that then losing your phone, deleting the app's storage or moving to a different phone without transferring the app's storage would brick the smart ring. Oculus decides are pretty big, I assume they have buttons that allow you to recover from that. This ring doesn't.

I mean, they have at least one button to trigger a factory reset, yeah.

Even most input-less smart devices have a way to do that though - like those ridiculous smartlight bulbs where you have to flick the light switch on and off in morse code to trigger the factory reset

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

#110

Post by TechDebtDevin »

runjake wrote: post #83
pydry wrote: post #43

Earlier quoted context omitted.

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.

> Oura rings do seem to have accurate tracking (unlike most smart watches). Accurate tracking of what? And which smart watches? The Apple Watch seems to generally have the most accurate tracking according to most studies, which surprises me. When I was looking at buying an Oura and browsing user subreddits, it was full of complaints about inaccurate readings and the slow intervals between readings.

Oura is terrible. Without their paid influencers they'd be in the graveyard with Pebble and other past wearable companies.

Your Oura ring will likely get bricked by their updates (they'll replace it, but come on). Or you could simply have a busy week, forget to charge it and ban. Bricked.

They of course were first to market with this form factor, so they of course are going to be the ones to take most of the flack for all the growing pains that come with that. This is typical with any new platform. However, they still leave a ton to be desired and I can't really see how they'll survive the next few years with all the competition in the space.

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