amc2022:grouph:dht22_humidity_temperature_sensor
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amc2022:grouph:dht22_humidity_temperature_sensor [2022/08/30 18:04] – gustavo001 | amc2022:grouph:dht22_humidity_temperature_sensor [2022/08/30 18:16] – gustavo001 | ||
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- | Source : https:// | + | |**//Figure #//** Graph showing the Relationship between resistance and temperature. |
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- Logic 1 is a 48 to 55 microsecond LOW pulse followed by a 68 to 75 microsecond HIGH pulse. | - Logic 1 is a 48 to 55 microsecond LOW pulse followed by a 68 to 75 microsecond HIGH pulse. | ||
- Logic 0 is a 48 to 55 microsecond LOW pulse followed by a 22 to 30 microsecond HIGH pulse. ((https:// | - Logic 0 is a 48 to 55 microsecond LOW pulse followed by a 22 to 30 microsecond HIGH pulse. ((https:// | ||
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+ | {{ : | ||
+ | |**//Figure #//** DHT22 Logic Signal formation. Source: https:// | ||
====Data ==== | ====Data ==== | ||
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**_1_**000 0000 0110 0101, this means that the temperature is negative, therefore T = -10.1 °C((https:// | **_1_**000 0000 0110 0101, this means that the temperature is negative, therefore T = -10.1 °C((https:// | ||
- | + | In Figure # down below, we can see the whole siganling process between ESP32 and DHT22. | |
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+ | |**//Figure #//** DHT22 bus transmission. Source: https:// | ||
====Code==== | ====Code==== | ||
amc2022/grouph/dht22_humidity_temperature_sensor.txt · Last modified: 2022/09/09 17:22 by gustavo001