Humidity Click Board™

Product Code: MIKROE-4878

How Does The Humidity Click Board™ Work? The Humidity Click Board™ as its foundation uses the HIH-5030, a high-performance analog-output relative humidity sensor from Honeywell Sensing and Productivity Solutions. The HIH-5030 surface-mounted, covered, condensation-resistant, integrated circuit humidity sensor factory-fitted with a hydrophobic filter allows usage in many condensing environments. It provides enhanced stability, accuracy, and response time over the entire humidity range of 0%RH to 100%RH with an accuracy of ±3%RH over a wide operating temperature range at the industry's lowest power. The Humidity Click Board™ is primarily developed for measuring the amount of water vapor in the air in industrial, medical, and commercial applications but can also be used in other application fields. The sensing element's multi-layer construction provides enhanced resistance to most application hazards such as condensation, dust, dirt, oils, and common environmental chemicals. The sensor converts humidity value into an analog output signal; more precisely, the user can process the output signal in analog or digital form.

The output voltage of the HIH-5030 can be converted to a digital value using MCP3221, a successive approximation A/D converter with a 12-bit resolution from Microchip, using a 2-wire I2C compatible interface, or can be sent directly to an analog pin of the mikroBUS™ socket labeled as AN. Selection can be performed by onboard SMD jumper labeled as ADC SEL to an appropriate position marked as AN and I2C. The Humidity Click Board™ can operate with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use the communication lines properly. However, the Click board™ comes equipped with a library containing 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 industrial, medical, and commercial applications On-board modules HIH-5030 - high-performance analog-output relative humidity sensor from Honeywell Sensing and Productivity Solutions Key Features Low power consumption, high precision and performance, enhanced accuracy and response time over the entire humidity range, chemically resistant, possibility of signal processing in analog and digital form, and more Interface Analog,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 on the Humidity Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes Analog Signal AN 1 AN PWM 16 NC NC 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 JP1 VCC SEL Left Logic Level Voltage Selection 3V3/5V: Left position 3V3, Right position 5V JP2 ADC SEL Right Output Voltage A/D Selection AN/I2C: Left position AN, Right position I2C HUMIDITY CLICK ELECTRICAL SPECIFICATIONS Description Min Typ Max Unit Supply Voltage 3.3 - 5 V