Arduino Modulino® Thermo

Arduino Modulino® Thermo is a compact, plug-and-play temperature sensing module built around the HS3003 humidity and temperature sensor. Offering high accuracy (±0.5 °C typical) and low power consumption, the Modulino Thermo is ideal for indoor climate control, greenhouse monitoring, and smart home automation. With Qwiic and 5-pin connectors, the module integrates easily into Arduino and third-party ecosystems, enabling fast prototyping and reliable thermal data acquisition. A small form factor and I2C interface make the device a practical solution for embedded designs requiring precise, real-time temperature feedback.

Features

  • Utilizes the HS3003 sensor to measure temperature and humidity
  • Communicates via I2C (Qwiic connector) at 3.3V (standard)
  • Designed with an additional header for optional connections
  • Plug-and-play connectivity
  • Robust, ready-to-use design
  • Effortless expansion
  • Seamless Arduino ecosystem integration
  • I2C Qwiic cable included

Applications

  • Indoor climate control
  • Greenhouse monitoring
  • Smart home automation

Specifications

  • HS3003 sensor
  • I2C communication
  • 2.3V to 5.5V sensor supply range
  • 3.3V nominal operating voltage via Qwiic
  • ~24.4µA typical current consumption at 14-bit resolution, 3.3V
  • Accuracy
    • ±2.8% relative humidity (RH)
    • ±0.25°C temperature
  • 14-bit humidity and temperature resolution
  • Board dimensions
    • 41mm x 25.36mm size
    • 1.6mm (±0.2mm) thickness
    • 4x ø3.2mm mounting holes
    • 16mm vertical, 32mm horizontal hole spacing
  • -40°C to +125°C operating temperature range
  • 0% to 100% RH range

Power Tree

Mechanical Drawing - Arduino Modulino® Thermo

Block Diagram

Block Diagram - Arduino Modulino® Thermo

Pinout

Mechanical Drawing - Arduino Modulino® Thermo

Dimensions

Mechanical Drawing - Arduino Modulino® Thermo
Published: 2025-06-04 | Updated: 2025-10-16