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Air quality monitors: paying more does not get you more accuracy

airgradient.com

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Re: Air quality monitors: paying more does not get you more accuracy

#41

Post by CommanderData »

ruph123 wrote: post #29

I would not recommend the Airgradient diy kit to anyone. Have been using one for a while but the CO2 sensor is really unreliable and often spits out wrong values. VERY OFTEN. Last time this issue was wildly discussed by people using it e.g. in the link below which is using Prometheus but also in the forums of airgradient. All with no solution. https://github.com/geerlingguy/airgradient-prometheus/issues...

I purchased a soldered unit and the CO2 monitor seems defective and I can't trust the readings.

Sometimes it reports 0 if left on for extended periods, other times the readings are wildly out of range of what the module is listed to support. I have emailed them regarding a different issue and didn't have the best response back and hasn't inspired confidence to raise this one.

On the plus side the module is replaceable and I'll probably just source it myself rather go through support.

Re: Air quality monitors: paying more does not get you more accuracy

#42

Post by ahaucnx »

rgovostes wrote: post #39
_zoltan_ wrote: post #34

Earlier quoted context omitted.

the above linked GitHub issue is still open.

The above linked GitHub issue has been closed for over 6 months, and aside from that was posted to the wrong project rather than to an official AirGradient channel.

This has been analysed extensively on our forum and the root cause was a bug in the software serial Arduino library as well as a slightly wrong command send from our library. Details [1]

[1] https://forum.airgradient.com/t/co2-reading-of-3-constantly/...

Re: Air quality monitors: paying more does not get you more accuracy

#44

Post by aSockPuppeteer »

sidmitra wrote: post #19
hammock wrote: post #18

Earlier quoted context omitted.

The same is true of digital bathroom scales. In fact almost all consumer grade digital scales have “fake accuracy” built into the firmware that ensures the same exact weight shows up when you step on the scale twice in a row, even if you pick up e.g a quarter-pound weight in your hand the second time

Yes, but do you(or someone else) have a recommendation of which scale does not do this? Something that's not consumer grade, but not "enterprise cost"

Eufy smart scale P2 Pro. $79.99

It has wifi and bluetooth, so it always syncs up with your phone and can track multiple people. I don't really trust the body measurement stuff but use it for measurement per measurement information. The heart rate is kind of nice to track too.

Re: Air quality monitors: paying more does not get you more accuracy

#45

Post by MaxikCZ »

ignite wrote: post #22
hammock wrote: post #18

Earlier quoted context omitted.

The same is true of digital bathroom scales. In fact almost all consumer grade digital scales have “fake accuracy” built into the firmware that ensures the same exact weight shows up when you step on the scale twice in a row, even if you pick up e.g a quarter-pound weight in your hand the second time

I just pick up a five pound weight and step on the scale, then put it down and step off. Step on again, and get he correct weight. Annoying, but it works.

Thats like having a car that always drives me somewhere I don't want before it drives me where I want. What the actual f*ck. How are people okay with having such garbage in their homes. Why not just buy an analog spring scale...

Re: Air quality monitors: paying more does not get you more accuracy

#46

Post by drukenemo »

MaxikCZ wrote: post #45
ignite wrote: post #22

Earlier quoted context omitted.

I just pick up a five pound weight and step on the scale, then put it down and step off. Step on again, and get he correct weight. Annoying, but it works.

Thats like having a car that always drives me somewhere I don't want before it drives me where I want. What the actual f*ck. How are people okay with having such garbage in their homes. Why not just buy an analog spring scale...

Because like anything analog these days, they are hard to find?

Re: Air quality monitors: paying more does not get you more accuracy

#47

Post by zo1 »

sidmitra wrote: post #19
hammock wrote: post #18

Earlier quoted context omitted.

The same is true of digital bathroom scales. In fact almost all consumer grade digital scales have “fake accuracy” built into the firmware that ensures the same exact weight shows up when you step on the scale twice in a row, even if you pick up e.g a quarter-pound weight in your hand the second time

Yes, but do you(or someone else) have a recommendation of which scale does not do this? Something that's not consumer grade, but not "enterprise cost"

What about getting two cheap scales and averaging their values? From my third-world perspective, it sure beats the other suggestion from one of the other commenters to get a $80 digital scale with bluetooth, wifi, fridge and Amazon prime integration.

Re: Air quality monitors: paying more does not get you more accuracy

#48

Post by viraptor »

sidmitra wrote: post #19
hammock wrote: post #18

Earlier quoted context omitted.

The same is true of digital bathroom scales. In fact almost all consumer grade digital scales have “fake accuracy” built into the firmware that ensures the same exact weight shows up when you step on the scale twice in a row, even if you pick up e.g a quarter-pound weight in your hand the second time

Yes, but do you(or someone else) have a recommendation of which scale does not do this? Something that's not consumer grade, but not "enterprise cost"

A cool tip I've seen before is to buy medical/laboratory equipment for scales. No fancy features, just durable build and accurate results.

Re: Air quality monitors: paying more does not get you more accuracy

#50

Post by cinntaile »

drukenemo wrote: post #46
MaxikCZ wrote: post #45

Earlier quoted context omitted.

Thats like having a car that always drives me somewhere I don't want before it drives me where I want. What the actual f*ck. How are people okay with having such garbage in their homes. Why not just buy an analog spring scale...

Because like anything analog these days, they are hard to find?

No they're not.
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