#airquality adventures
Been fighting with stupid #winsen #mhz19c sensor.
On 3.3 v the line on the left: readings with 100% variability. Totally unusable.
Then had it a few hours on 5v. During that time it only reported 400ppm co2
After that switched back to 3.3 volt and suddenly readings vastly improved.
What a shitty sensor.