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[![license-badge][]][license] ![version] [![stars][]][stargazers] ![hit-count] [![github-issues][]][issues]
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< h1 > This library is no longer supported. New library here - https://github.com/enjoyneering/AHTxx< / h1 >
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# Aosong ASAIR AHT10, AHT15 & AHT20
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This is an Arduino library for Aosong ASAIR AHT10, AHT15 & AHT20 Digital Humidity & Temperature Sensor
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- Supply voltage: 1.8v - 3.6v for AHT10, AHT15 & 2.0v - 5.5v for AHT20
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- Temperature range: -40°C..+85°C
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- 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***
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Supports all sensors features:
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- read humidity****
- read temperature****
- soft reset with sensor initialization
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Tested on:
- Arduino AVR
- Arduino ESP8266
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- Arduino ESP32
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- Arduino STM32
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**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.
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***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.
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[license-badge]: https://img.shields.io/badge/License-GPLv3-blue.svg
[license]: https://choosealicense.com/licenses/gpl-3.0/
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[version]: https://img.shields.io/badge/Version-1.1.0-green.svg
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[stars]: https://img.shields.io/github/stars/enjoyneering/AHT10.svg
[stargazers]: https://github.com/enjoyneering/AHT10/stargazers
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[hit-count]: https://hits.seeyoufarm.com/api/count/incr/badge.svg?url=https%3A%2F%2Fgithub.com%2Fenjoyneering%2FAHT10& count_bg=%2379C83D& title_bg=%23555555& icon=& icon_color=%23E7E7E7& title=hits& edge_flat=false
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[github-issues]: https://img.shields.io/github/issues/enjoyneering/AHT10.svg
[issues]: https://github.com/enjoyneering/AHT10/issues/
