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amc2020:group_n:dht22 [2020/07/28 20:45] – [3.2.3 Upload-issues using the ESP32 DevkitC VB] jonas001amc2020:group_n:dht22 [2023/01/05 14:38] (current) – external edit 127.0.0.1
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 ====== DHT-22 Air Temperature and Humidity Sensor ====== ====== DHT-22 Air Temperature and Humidity Sensor ======
  
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 | Repeatability             | $\pm$ 1 % RH                       | $\pm$ 0.2 °C       | | Repeatability             | $\pm$ 1 % RH                       | $\pm$ 0.2 °C       |
 The specifications are also available in the {{https://cdn-shop.adafruit.com/datasheets/Digital+humidity+and+temperature+sensor+AM2302.pdf| AM2302 Datasheet}}. The specifications are also available in the {{https://cdn-shop.adafruit.com/datasheets/Digital+humidity+and+temperature+sensor+AM2302.pdf| AM2302 Datasheet}}.
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 +^{{:amc2020:group_n:esp32_dht22.png?direct&300|Figure 3}}^
 +|**//Figure 3//** Connection of ESP32 and DHT-22.|
  
 ==== 3.1 Pullup Resistors ==== ==== 3.1 Pullup Resistors ====
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 Between the printing of the results (line 3, 4, 5) and the start of the next measurement process (line 6) a time difference of 2.04 seconds could be observed. 2 seconds are due to the delay in the main loop (code section 10), the rest is due to the print() functions which consume comparably much time.  Between the printing of the results (line 3, 4, 5) and the start of the next measurement process (line 6) a time difference of 2.04 seconds could be observed. 2 seconds are due to the delay in the main loop (code section 10), the rest is due to the print() functions which consume comparably much time. 
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amc2020/group_n/dht22.1595961952.txt.gz · Last modified: 2023/01/05 14:38 (external edit)