SparkFun SHTC3 Humidity Sensor Breakout (Qwiic) - I2C Digital Sensor Module
SparkFun SHTC3 Humidity Sensor Breakout (Qwiic) - I2C Digital Sensor Module - Image 2
SparkFun SHTC3 Humidity Sensor Breakout (Qwiic) - I2C Digital Sensor Module - Image 3
SKU: SENS-2856
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SparkFun SHTC3 Humidity Sensor Breakout (Qwiic) - I2C Digital Sensor Module

â‚č939.00 (Inclusive of all taxes)
Out of Stock

The SparkFun SHTC3 Humidity Sensor Breakout is a Qwiic-enabled digital sensor module providing high-accuracy relative humidity and temperature measurements via I2C interface, ideal for Arduino, Raspberry Pi, and other 3.3V microcontroller systems.

Features

  • High-accuracy digital humidity & temperature sensor with ±2% RH and ±0.2°C typical accuracy.
  • Qwiic-enabled I2C interface (address 0x70) for plug-and-play connectivity within the SparkFun ecosystem.
  • Ultra-low power operation with configurable modes (Normal: 4.9”A–430”A, Low Power: 0.5”A–270”A).
  • Wide operating ranges: 0–100% RH and -40°C to +125°C.
  • Compact breakout board with dual Qwiic connectors for daisy-chaining.

Out of stock

Description

The SparkFun SHTC3 Humidity Sensor Breakout integrates Sensirion’s SHTC3 MEMS-based capacitive sensing element onto a user-friendly Qwiic board. This digital sensor delivers calibrated, linearized humidity and temperature data via a robust I2C interface, eliminating the need for analog signal conditioning.

Designed for low-power embedded systems, the SHTC3 supports multiple measurement modes to optimize power consumption for battery-operated applications like environmental monitoring, portable weather stations, and IoT sensor nodes. Its 3.3V Qwiic compatibility ensures seamless integration with a wide range of development platforms.

Key Features

  • High-precision MEMS capacitive humidity sensing element from Sensirion.
  • Fully calibrated and temperature-compensated digital output.
  • Ultra-low current draw for extended battery life in portable designs.
  • Robust Qwiic connector system enables solderless, daisy-chainable connections.
  • Wide supply voltage range from 1.62V to 3.6V, typically powered via 3.3V Qwiic bus.
  • Compact PCB footprint with standard mounting holes for secure installation.
  • High-resolution measurement with 0.01% RH and 0.01°C steps.

Applications

  • Precision environmental monitoring in greenhouses, humidors, and HVAC systems.
  • Portable weather stations and IoT-based climate data loggers.
  • Battery-powered asset tracking with environmental condition reporting.
  • Indoor air quality (IAQ) monitoring and smart home automation.
  • Product validation and testing in R&D labs requiring stable humidity/temperature readings.

Technical Specifications

Manufacturer Part NumberSHTC3
InterfaceI2C (Address: 0x70), Qwiic Connectors (x2)
Supply Voltage1.62 VDC to 3.6 VDC
Typical Operating Voltage3.3 VDC (via Qwiic)
Humidity Range0% to 100% RH
Humidity Accuracy±2 %RH (typical)
Humidity Resolution0.01 %RH
Temperature Range-40°C to +125°C
Temperature Accuracy±0.2 °C (typical)
Temperature Resolution0.01 °C
Current Consumption (Normal Mode)4.9 ”A to 430 ”A (typical)
Current Consumption (Low Power Mode)0.5 ”A to 270 ”A (typical)
Dimensions (Shipping)10 cm x 6 cm x 1 cm
Weight (Shipping)0.02 kg

Frequently Asked Questions

What is the operating voltage range for the SHTC3 breakout?

The SHTC3 sensor IC itself operates from 1.62V to 3.6V. When using the onboard Qwiic connectors, the module is typically powered by the standard 3.3V Qwiic bus. Ensure your host system provides a stable 3.3V supply via the Qwiic cable for reliable operation.

How do I connect and communicate with this sensor?

This breakout uses the Qwiic (I2C) interface. Simply connect a Qwiic cable from the sensor to any other Qwiic-enabled board (like a SparkFun RedBoard or Raspberry Pi HAT). The sensor has a fixed I2C address of 0x70. Use standard I2C library commands to initiate measurements and read humidity and temperature data registers.

What is the accuracy and measurement range of this sensor?

The SHTC3 provides a typical humidity accuracy of ±2% RH across a 0–100% RH range, with a resolution of 0.01% RH. For temperature, it offers ±0.2°C typical accuracy across a wide -40°C to +125°C range, with a resolution of 0.01°C. These specs make it suitable for high-precision environmental monitoring.

Can this sensor be used in low-power or battery-powered projects?

Yes, the SHTC3 is designed for low-power applications. It features configurable measurement modes: Normal Mode (typical current 4.9”A–430”A) and a dedicated Low Power Mode (typical current 0.5”A–270”A). You can put the sensor into sleep mode between readings to significantly extend battery life in portable data loggers.

Package Includes

  • 1 x SparkFun Humidity Sensor Breakout - SHTC3 (Qwiic)

Additional Information

Weight 0.02 kg
Dimensions 6 × 10 × 1 cm

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