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I just hooked up a DHT22 I had laying around in a parts drawer to test something and it is giving out some crazy wrong values, I am running the adafruit library's unified example and this is the output:

Resolution:   0.10%
------------------------------------
:   1
Unique ID:    -1
Max Value:    100.00%
Min Value:    0.00%
Resolution:   0.10%
------------------------------------
DHTxx Unified Sensor Example
------------------------------------
Temperature
Sensor:       DHT22
Driver Ver:   1
Unique ID:    -1
Max Value:    125.00 *C
Min Value:    -40.00 *C
Resolution:   0.10 *C
------------------------------------
------------------------------------
Humidity
Sensor:       DHT22
Driver Ver:   1
Unique ID:    -1
Max Value:    100.00%
Min Value:    0.00%
Resolution:   0.10%
------------------------------------
Temperature: 588.80 *C
Humidity: 998.40%
Temperature: 563.20 *C
Humidity: 1049.60%
Temperature: 563.20 *C
Humidity: 1024.00%
Temperature: 563.20 *C
Humidity: 1024.00%
Temperature: 563.20 *C
Humidity: 1024.00%

Had anyone seen behaviour like this before? of course my room isn't 600 *C or 1000% humidity XD

Its connected to an arduino UNO that I am pretty sure works fine.

Improve this question
3
  • Since the sensed value exceed the max value, perhaps code error?
    – dhimaspw
    Nov 23 '16 at 10:50
  • Arduino Mega: " Temperature: 716.80 *C Humidity: 1024.00% " library fake :-(
    – tom
    Mar 1 '17 at 18:01
  • 1
    Have you tried this with the standard libraries (AdaFruit_Sensor & DHT)? Plus, it is helpful if you show the code you are using.
    – SDsolar
    May 7 '17 at 2:35

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