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This is the accompanying repository for all source code and additional material for the article series "Environmental Sensor usage with ESP32"

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ESP32 Environmental Sensors

This is the accompanying repository for all source code and additional material for the article series "Environmental Sensor usage with ESP32", published on medium.com.

NOTE: this is a repository that will be updated very frequently in the next weeks, so please be patient if a specific sensor sketch is not available for now !

Parts of the tutorial:

Temperature, Humidity or Air Pressure Sensors

Air Quality Sensors

  • AGS02MA Sensor (Total volatile organic compounds "TVOC" for Air Quality): coming soon
  • AGS10 Sensor (Total volatile organic compounds "TVOC" for Air Quality): coming soon
  • BME680 Sensor (Indoor Air Quality "IAQ"): coming soon

Bonus - using ESP-NOW to retrieve the data from remote places: coming soon

For each tutorial you will find a subfolder with all material needed to follow the tutorial.

Additional tutorials

ESP32 I2C-Bus Scanner: https://medium.com/@androidcrypto/esp32-i2c-bus-scanner-1ac88f6ffd86 (source code: https://github.com/AndroidCrypto/ESP32_I2C_Bus_Scanner)

ESP32 Add a long term data storage and visualization to your sketch (using ThingSpeak): https://medium.com/@androidcrypto/esp32-add-a-long-term-data-storage-and-visualization-to-your-sketch-using-thingspeak-49bf54f78360

ESP32 Environmental Sensor BME280 measures the Altitude: https://medium.com/@androidcrypto/esp32-environmental-sensor-bme280-measures-the-altitude-5a847073376a (source code: https://github.com/AndroidCrypto/ESP32_Environmental_Sensors/tree/main/Esp32_EnvironmentSensor_BME280_Altitude)

Datasheets

All available data sheets of the sensors are available in the subfolder "datasheets".

Sensor Name Values retrieved Interface Address Pricing
Basic Sensors
AHT10 Temperature, Humidity I2C 0x38 (alternative 0x39) 1.40 €
AHT20 + BMP280 Temperature, Humidity, Air Pressure I2C AHT20: 0x38 , BMP280: 0x77 1.40 €
BME280 Temperature, Humidity, Air Pressure I2C 0x77 (alternative 0x76) 3.40 €
BMP280 Temperature, Air Pressure I2C 0x76 (alternative 0x77) 1.70 €
DHT11 Temperature, Humidity GPIO P 18 1.20 €
DHT22 Temperature, Humidity GPIO P 18 2.10 €
DS18B20 Temperature (waterproof) GPIO P 26 2.00 € (Set)
Specialised Sensors
AGS02MA Total volatile organic compounds "TVOC" I2C 0x1A (changable) 2.00 €
AGS10 Total volatile organic compounds "TVOC" I2C 0x1A (changable) 2.70 €
BME680 Indoor Air Quality ("IAQ") I2C 0x77 (alternative 0x76) 6.70 €

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This is the accompanying repository for all source code and additional material for the article series "Environmental Sensor usage with ESP32"

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