Adafruit SHT40 SHT41 and SHT45 Shields

Overview

The Adafruit SHT40 SHT41 and SHT45 Shields feature a Sensirion SHT4x Humidity and Temperature Sensor and two STEMMA QT connectors. It measures temperature and humidity. See for example the SHT40 sensor.

Adafruit SHT40 Shield (Credit: Adafruit)

Requirements

This shield can be used with boards which provide an I2C connector, for example STEMMA QT or Qwiic connectors. The target board must define a zephyr_i2c node label. See Shields for more details.

Pin Assignments

Shield Pin	Function
SDA	Sensor I2C SDA
SCL	Sensor I2C SCL

See sensirion,sht4x for details on possible devicetree settings, for example regarding the trade-off between speed and repeatability.

This shield definition assumes an I2C address of 0x44.

Programming

Set --shield adafruit_sht4x when you invoke west build. For example when running the Generic digital humidity temperature sensor polling sample:

# From the root of the zephyr repository
west build -b adafruit_feather_rp2040 --shield adafruit_sht4x samples/sensor/dht_polling
west flash