Temp&Hum 14 Click Board™

Product Code: MIKROE-4306

How Does The Temp & Hum 14 Click Board™ Work? The Temp & Hum 14 Click Board™ is based on the HTU31D, a digital relative humidity sensor with temperature output from TE Connectivity. Both sensors inside of the HTU31D are individually calibrated, compensated, and tested. The humidity can be measured within a range of 0 to 100 %RH, while the temperature sensor is designed for a range of -40 to 125 °C. The typical accuracy for humidity is ± 2 %RH in the measuring range of 20 up to 100 %RH at ambient temperature and ±0.2 °C for temperature between 0 - 100 °C with power consumption down to 3.78μW. This Click Board™, an I2C configurable environmental sensor, is characterized by high reliability and full interchangeability with no calibration required in standard conditions. It has a quick recovery time after long periods in the saturation phase, low power consumption, and fast response time. Also, this sensor provides sustained performance even when exposed to extreme temperatures up to 125°C and humidity environments.

The Temp & Hum 14 Click Board™ communicates with MCU using the standard I2C 2-Wire interface with a maximum frequency of 10MHz. The HTU31D can answer 2 I2C addresses and allows the choice of the least significant bit (LSB) by positioning SMD jumpers labelled as ADDR SEL to an appropriate position marked as 0 and 1. In addition to this feature, this Click board™ also contains additional functionality routed to the RST pin on the mikroBUS™ socket. The RST pin can be used to generate a reset of the sensor with a minimum pulse duration of 1 μs required to trigger this function. The HTU31D also offers a diagnostic register that can be used to check whether the values for humidity and temperature are outside the specified range. The CRC check (Cyclic Redundancy Check) ensures secure data transmission. The humidity and temperature signal response time, as well as the recovery time (after complete condensation), are within a range of a few seconds. The Temp & Hum 14 Click Board™ is designed to be operated with both 3.3V and 5V logic voltage levels that can be selected via VCC SEL jumper. This allows for both 3.3V and 5V capable MCUs to use the I2C communication lines properly. However, the Click board™ comes equipped with a library that contains easy to use functions and an example code that can be used as a reference for further development. SPECIFICATIONS Type Temperature & humidity Applications Can be used for relative humidity and temperature measuring applications, including weather stations, reliable monitoring systems, and more. On-board modules The Temp & Hum 14 Click Board™ is based on the HTU31D, a digital relative humidity sensor with temperature output from TE Connectivity. Key Features High reliability and environmental robustness, full interchangeability with no calibration required in standard conditions, quick recovery after long periods in saturation phase, low power consumption, fast response, and more. Interface I2C Compatibility mikroBUS Click board size S (28.6 x 25.4 mm) Input Voltage 3.3V or 5V PINOUT DIAGRAM This table shows how the pinout of the Temp & Hum 14 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes NC 1 AN PWM 16 NC Reset RST 2 RST INT 15 NC NC 3 CS RX 14 NC NC 4 SCK TX 13 NC NC 5 MISO SCL 12 SCL I2C Clock NC 6 MOSI SDA 11 SDA I2C Data Power Supply 3.3V 7 3.3V 5V 10 5V Power Supply Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name Default Description LD1 PWR - Power LED Indicator J