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A comment on Show HN: I wanted to measure CO2 in my office, so I build a C++ WebServer/App. Parent comment

Re:Show HN: I wanted to measure CO2 in my office, so I build... by johndough on Friday January 25, 2019 @07:52AM (#18997483)
Since this is based on a reverse-engineered binary protocol and since the step sizes are reasonably close to 64 and 128, I'd guess it's a bug.
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Re:Show HN: I wanted to measure CO2 in my office, so I build... by CamperBob2 on Friday January 25, 2019 @12:55PM (#19000440)
It looks like there's no need to reverse-engineer the protocol:

https://www.co2meter.com/products/co2mini-co2-indoor-air-qua...

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Re:Show HN: I wanted to measure CO2 in my office, so I build... by stackmad on Friday January 25, 2019 @08:02AM (#18997529)
The device on its onscreen display shows the same steps, so I think its due to how the sensor works.
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