Fermion - AHT20 temperature and humidity sensor - DFRobot SEN0527

The Fermion series tile is equipped with the AHT20 system, which allows for precise measurements of air temperature and humidity . The module uses the I2C bus and the interface address is 0x38 . Provides stable measurement , also under unfavorable environmental conditions. The possible temperature measurement is in the range from -40 ° C to 85 ° C with an accuracy of 0.3 ° C , and humidity in the range from 0% to 100% RH with an accuracy of 2% RH . The module is supplied with the voltage from 2 V or 5 V DC .

Elements included in the kit.

Fermion - temperature and humidity sensor AHT20 - DFRobot SEN0527.

• It has a modernized MEMS module for measuring air humidity
• It uses the I2C digital interface
• Provides a precise and stable reading of the values
• Demonstrates anti-disturbance and has the ability to adapt

• Air dryer and application prototypes
• Consumer devices, e.g. cars
• Automatic control, e.g. of the weather
• Data recorders

The module communicates with the microcontroller via the I2C interface. The board is powered with the voltage from 2 V to 5 V. Its leads are solder fields, to which the goldpin connectors included in the set should be soldered and connected according to the following dependency:

• VCC - power pin from 2 V to 5 V DC
• GND - the ground of the system
• SCL - clock line of the I2C bus
• SDA - data line of the I2C bus

• Fermion - AHT20 temperature and humidity sensor - DFRobot - 1 piece
• Goldpin strip 1x4 pin - 2.54 mm raster - 1 piece

Connection diagram of the sensor using the DFRduino board.

Temperature and humidity sensor equipped with the AHT20 system.

• Type: air temperature and humidity sensor
• Built-in chip: AHT20
• Supply voltage: 2 V to 5 V DC
• Communication interface: I2C bus
• Interface address: 0x38
• Temperature measurement:
  • range: -40 ° C to 85 ° C
  • accuracy: up to 0.3 ° C
  • resolution: 0.01 ° C
  • response time: from 5 s to 30 s
• Moisture measurement:
  • range: 0% to 100% RH
  • accuracy: up to 2% RH
  • resolution: 0.024% RH
  • response time: 8 s
• Conclusions: pads
• Tile sizes: 22 x 13.5 mm

• Manufacturer's website: DFRobot SEN0527
• User Guide
• Tile dimensions
• SCH circuit diagram
• 3D model