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The higher the percentage, the more humid. The higher the relative humidity, the less drying takes place. This affects the human bodies' perception of heat, as explained next.’ [3]
Figure 32. [7]
Figure 43. [7]
Capacitive Humidity Sensor and Physical principles models
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To actually get any usable humidity values, a relatively accurate temperature measurement is also needed, as relative humidity is very dependant on temperature.
Figure 54. Capacitive Humudity Sensor Schematic.
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Sensor proceeds to send the data, each bit starts with 50µs low, then the bit data itself; 26 to 28µs for ‘0’, 70µs for ‘1’
Figure 65. Timing Diagram. [5]
Applications: Arduino + Humidity Sensor + Temperature Sensor
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DHT11 power consumption
Figure 26. Power consumption sheet.
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