Comparison between temperature and humidity sensor types

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I've been running a Wemos D1 mini in a Frankenstein-like configuration over the past few weeks, with the aim of testing a few different temperature and humidity sensors. I've been trialling the following sensor types:
  • DHT22
  • DHT11
  • BME280
  • SHT30
The breadboard with the sensors looks like this:



You can see some graphs of a recent sample of readings from Grafana here:

I'm actually a bit disappointed with how much variation there is between these sensors. Overall, I'm more confident in the readings from the DHT22 sensors, based on comparisons with some other temperature sensors I have in the house. The BME280 and SHT30 don't appear to be as accurate as I had hoped. The DHT11 is doing a reasonable job at the temperature readings, but the humidity is probably over-reading.

Comments

  1. Richard Warfield19 October 2020 at 18:13

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