Humidity and Thermometer Sensirion HTS221(I2C)

File:TArduinoHTS221.png

Summary

Measures ambient temperature and relative humidity using the Sensirion HTS221 digital sensor over I²C.

Description

The **Humidity and Thermometer Sensirion HTS221 (I2C)** component provides high-precision temperature and humidity readings. It communicates via the I²C bus and supports features such as averaging, one-shot measurement mode, and built-in heater control. Data availability can be monitored using the configurable **Data Ready** pin.

Diagram:

Properties

• Enabled – Enables or disables the component.
• In Fahrenheit – Outputs temperature in Fahrenheit instead of Celsius.
• Address – I²C address of the HTS221 sensor.
• Average - Humidity – Number of samples averaged for humidity measurement (default 32).
• Average - Temperature – Number of samples averaged for temperature measurement (default 16).
• Data Ready - Signal Enabled – Enables the data ready output pin.
• Data Ready - Active Low – Makes the data ready pin active low.
• Data Ready - Open Drain – Configures the data ready pin as open-drain.
• Heater Enabled – Turns on the sensor’s internal heater.
• One Shot – Initiates a single measurement cycle.
• Power Down – Puts the sensor into low-power mode.
• Sample Rate – Measurement frequency in Hz (options: 1.0, 7.0, 12.5).

Pins

Input Pins

• Clock – Triggers reading or controls timing for one-shot measurements.
• Sensor (I2C) – I²C communication lines for the sensor.

Output Pins

• Temperature (analog) – Ambient temperature in Celsius or Fahrenheit.
• Humidity (%) (analog) – Relative humidity output as a percentage.

Categories

• File:TArduinoSensorsCategory.png Category Sensors – Temperature and humidity measurement.
• File:TArduinoI2CCategory.png Category I2C – I²C-enabled sensors and devices.
• File:TArduinoAnalogCategory.png Category Analog – Analog output values.
• File:TArduinoDigitalCategory.png Category Digital – Digital data ready signal.