March 2nd, 2020 (GMT+8 ) Seeed finished the design of Grove – AHT20 I2C Industrial grade temperature and humidity sensor March 2nd, 2020 (GMT+8 ) Seeed published this blog to call for ideas regarding the new Grove products. So color coded for ease of use, this layout shows a connection to the module ESP8266 and AHT20 layout Code Example

This uses the library from Adafruit installed using the Library Manager in the Arduino IDE. search for AHTx0 , and select the Adafruit AHTx0 Library library and also the Adafruit BusIO library We are going to release new Grove temperature and humidity sensors soon in a preview below. We hope our new product will help your environmental projects! Let us know your thoughts, we will carefully listen to and take action! The AHT20 is a high-precision but low-cost temperature and humidity sensor, which is equipped with an improved MEMS semiconductor capacitive humidity sensor element. It features standard I2C interface and a wide voltage supply of 2V - 5V. And with simple peripheral circuit, it performs stably even in harsh environments in the measuring range of -40 - ＋85℃. Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit! DependenciesThis little sensor looks an awful lotlike the popular DHT11/DHT22 temperature and humidity sensors, but unlike classic DHT sensors, it has an I²C interface! That's right, you do not need to use a bit-bang timing-specific protocol to talk to the DHT20, it uses plain-old-I²C. And, you can power it with anything from 2.5V to 5.5V so it's good with 3V or 5V microcontrollers. Whew, that makes things a little easier, doesn't it? The results are as shown in the figure below, the temperature values in ℃ and ℉, and humidity values are displayed in the serial monitor. Join over 36,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord The sensor outputs calibrated digital signals in standard I 2C format. The AHT20 is equipped with a newly designed ASIC chip, an improved MEMS semiconductor capacitive humidity sensing element and a standard on-chip temperature sensing element. Supply voltage

Inside is the AHT20. You can take sensor readings as often as you like, and it uses standard I2C so its super easy to use with any Arduino or Linux/Raspberry Pi board. Based on the temperature and humidity sensor AHT21 chip, Aosong Electronics also launched a series of temperature and humidity sensor module sensors-AHT21B, AM2301B, AM2311B, and other products. This series of sensors all offer stable performance, high accuracy, fast response speed, strong anti-interference ability, etc.The AHT20 is a nice but inexpensive temperature and humidity sensor from the same folks that brought us the DHT22. You can take sensor readings as often as you like, and it uses standard I2C so its super easy to use with any Arduino or Linux/Raspberry Pi board. Because of this peculiarity, other sensors may be more appropriate, like the AHT20/AHT21 also supported by this plugin, or Environment - BMx280, Environment - BME68x, Environment - SI7021/HTU21D, Environment - DHT12 (I2C), Environment - AM2320, Environment - SHT3x or Environment - HDC1000/HDC1008/HDC1010/HDC1050/HDC1080 (I2C). n Users must call the startMeasurementReady function once to start the measurement before calling this function so as to get the real-time measured data, The layout below shows an Adafruit Huzzah ESP32, I tried a couple of other ESP32 boards like the Lolin32 as well and they worked just fine