Fermion: SHT30 Digital Temperature & Humidity Sensor

1. Example Code for Arduino-Single Measurement Mode

Read ambient temperature (C/F) and relative humidity (%RH) in single-read mode. In single measurement mode, the sensor collects data every time the controller board sends out the data collecting command. The power consumption could be very low in this mode since users can read data according to their needs. The chip defaults in this mode, we need to send instructions to enable the chip collect data, which means the repeatability of the read needs to be set (the difference between the data measured by the chip under the same measurement conditions) then read the temperature and humidity data and print the data in the serial port. Single measure mode: read data as needed, power consumption is relatively low, the chip idle state only costs 0.5mA.

2. Example Code for Arduino-Temperature & Humidity Alarm

Temperature and humidity over-threshold alarm. The user can customize the temperature and humidity thresholds, and the ALERT pin generates an alarm signal once the values exceed the user-defined threshold. The ALERT pin on the sensor should be connected to the interrupt pin on the main panel when using this function. The ALERT pin only works properly in period measurement mode.

3. Example Code for Arduino-Period Measurement Mode

Read ambient temperature (C/F) and relative humidity (%RH) in cycle read mode. In period measurement mode, the sensor collects data at the user-set frequency. The temperature and humidity data will be printed at the serial port for 10 seconds, then exit the cycle mode and enter single measurement mode. Cycle measurement mode allows the chip to periodically monitor temperature and humidity, and only in this mode the ALERT pin will work.