Diglient Pmod HYGRO Digital Humidity and Temperature Sensor

Features and Specifications

• Relative Humidity Accuracy +/-2%
• Temperature Sensor Accuracy +/-0.2 C
• Good stability at high humidity
• 14-bit measurement resolution
• Internal resistive heating element
• 6-pin Pmod connector
• I2C BUS interface
• 3.3V or 5V Logic Levels
• Pass-through Pmod host port for daisy chaining

The Pmod HYGRO is designed to digitally report the relative humidity and ambient temperature upon request by the host board. With the TI HDC1080, acquire up to 14-bits of resolution for each sensor may be collected by allowing for longer conversion times. A resistive heating element can be enabled to test the sensor or drive off condensation that accumulates on the sensor after being consistently exposed to high humidity conditions.

The Pmod HYGRO communicates with the host board via the I2C protocol. By first sending the 7-bit I2C address of 1000000 (0x40) and then a read/write bit (high/low logic level, respectively), followed by the register address of interest at a maximum clock frequency of 400 kHz, users can both configure and read from the Pmod HYGRO. Header J2 on the Pmod HYGRO passes through all of the signals present on the main Header J1 to allow for the daisy chaining of multiple I2C compatible modules.

Pmod Series Overview

The Digilent Pmod (peripheral module) Series is a small, low-cost peripheral module that can be used with a wide range of embedded systems and development boards. It is designed to extend the capabilities of embedded systems and development boards by adding new features and functionality. The Pmod communicates with host boards using 6, 8 or 12-pin connectors that can carry multiple digital control signals, taking advantage of standard serial protocols such as SPI and I²C. This allows for more effective designs by routing analog signals and power supplies only where they are needed and away from digital controller boards.

What's in the Box

• Pmod HYGRO
• Custom antistatic Pmod packaging