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This is an Arduino library for Aosong ASAIR AHT10, AHT15 Digital Humidity & Temperature Sensor
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README.md

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Aosong ASAIR AHT10, AHT15 & AHT20

This is an Arduino library for Aosong ASAIR AHT10, AHT15 & AHT20 Digital Humidity & Temperature Sensor

  • Supply voltage: 1.8v - 3.6v
  • Temperature range: -40°C..+80°C
  • Temperature resolution: 0.01°C
  • Temperature accuracy: ±0.3°C
  • Relative humidity range: 0%..100%
  • Relative humidity resolution: 0.024%
  • Relative humidity accuracy: ±2%**
  • I²C bus speed: 0Hz - 400KHz
  • Recomended polling frequency: 8sec - 30sec***

Supports all sensors features:

  • read humidity****
  • read temperature****
  • soft reset with sensor initialization

Tested on:

  • Arduino AVR
  • Arduino ESP8266
  • Arduino ESP32
  • Arduino STM32

**Prolonged exposure for 60 hours at humidity > 80% can lead to a temporary drift of the signal +3%. Sensor slowly returns to the calibrated state at normal operating conditions.

***If sampling rate of the measurement is too high, the sensor overheats. To prevent the temperature of the sensor from rising > 0.1°C, read sensor once every 2 seconds.

****The library returns 255 if a communication error occurs or if the calibration coefficient is off.