I've had a CO2Meter monitor for about a year now, and I have mine connected to a Raspberry Pi. I use a node script to push readings to a database on my NAS, and

I've had a CO2Meter monitor for about a year now, and I have mine connected to a Raspberry Pi. I use a node script to push readings to a database on my NAS, and to fire an IFTTT webhook to my Nest to turn on the fan when CO2 levels hit a certain threshold.