Product description: Temperature and humidity sensor - HDC3021 - STEMMA QT / Qwiic - Adafruit 5989
The Adafruit temperature and humidity sensor is an advanced solution for all electronics enthusiasts and professionals who need precise measurements. The use of the TI HDC302x chip makes this sensor achieve a typical accuracy of ± 0.5% for humidity measurements in the range of 0% to 100% RH and ± 0.1 ° C for temperature in the range of -40 ° C to 125 ° C. The sensor supports the I2C interface, which allows for simple communication, without the need for logical level converters. Power supply in the range of 1.62 V to 5.5 V allows for easy adaptation to various applications. The sensor is also equipped with STEMMA QT / Qwiic connectors and leads in the form of solder pads. The kit includes a dedicated goldpin strip (2.54 mm pitch), which should be soldered in the marked places.
The manufacturer has prepared a user guide that will help you get started with the sensor.
Temperature and humidity sensor - HDC3021 - STEMMA QT / Qwiic - Adafruit 5989.
The sensor supports I2C interface.Special features of the sensor
- High measurement precision: ± 0.1°C (temperature), ± 0.5% (humidity)
- Wide supply voltage range: 1.62 V to 5.5 V
- I2C interface with the option to select one of four addresses
- Automatic measurements and programmable alarms
- Compatibility with STEMMA QT / Qwiic systems (no soldering required)
- Low long-term drift, ideal for accurate and stable measurements
Applications for the Adafruit sensor
- Monitoring environmental conditions in buildings
- Home automation systems
- IoT projects (Internet of Things)
- Applications in agriculture and plant nurseries
- Climate data analysis
Sensor pinout description
The sensor has solder pads to which goldpin connectors (supplied in the kit) should be attached. Alternatively, the sensor is also equipped with STEMMA QT / Qwiic connectors, which allows easy connection to the module on the controller board, eliminating the need for additional soldering.
- VCC - power supply pin ranging from 1.62 V to 5.5 V
- GND - system ground
- SCL - logical pin, clock line of the I2C interface
- SDA - logical pin, I2C interface data line
- RST - RESET pin
- ALERT - I2C communication interface address selection pin
Items included in the set.
Sensor Technical Specifications
- Module: temperature and humidity measurement sensor
- Type: digital
- Built-in chip: HDC302x
- Temperature measurement range: -40°C to 125°C
- Temperature measurement accuracy: +/- 0.1°C
- Humidity measurement range: 0% to 100% RH
- Humidity measurement accuracy: +/- 0.5% RH
- Long term drift: 0.19% RH/year
- Communication interface: I2C
- Power supply: 1.62 V to 5.5 V
- Condensation protection: built-in heater
- Connectors: solder pads / STEMMA QT / Qwiic
- Module dimensions: 25.4 x 17.7 x 4.7 mm
- Weight: 1.6 g
Kit Contents
- Temperature and Humidity Sensor - HDC302x from Adafruit
- Goldpin strip 1x8 - pitch 2.54 mm
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