[jakobegger]

Why are there steps in the CO2 levels?

[johndough]

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.

[CamperBob2]

It looks like there's no need to reverse-engineer the protocol:

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

[stackmad]

The device on its onscreen display shows the same steps, so I think its due to how the sensor works.