@cos @gsuberland @joepie91 I will ask my mum if she's willing to get one for me, she tends to put money towards things if they end up being benificial for my health
@gsuberland @cos @joepie91 ahh, that's a bit too overboard price-wise unfortunately :(
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@Violet For Operame (operame.nl) we used a MH-Z19B (and later, an apparent clone) which is also an NDIR sensor AFAIK. Not the highest-quality or most accurate one but it was definitely good enough for the purpose. The whole Operame unit (sensor + display + microcontroller + PCB) ended up costing around 30 EUR in parts I believe.
@Violet (Commercial products using that sensor will probably be more expensive though, because of markup...)