SparkFun Human Presence and Motion Sensor - STHS34PF80 (Qwiic)

Built around the STHS34PF80 sensor from STMicroelectronics, this compact board (2.54 cm x 2.54 cm) empowers engineers to effortlessly experiment and develop applications. It features two Qwiic connectors, four mounting holes, six PTH pins (3V3, GND, SCL, SDA, CS, INT), and a red power LED.

The STHS34PF80 sensor is adept at measuring precise black-body radiation and monitoring ambient temperature within its 80° field of view. Comprising a matrix of floating vacuum thermal transistors, it differentiates between IR-exposed and shielded segments to eliminate self-heating effects. Its algorithms can detect and distinguish between stationary and moving objects, making it ideal for alarm systems, anti-intruder setups, smart lighting, and room occupancy applications.

Operating seamlessly in varied lighting conditions, the sensor is unaffected by visible light due to its 5 to 20 μm optical band-pass filter. With output data rates ranging from 0.25 to 30 Hz and single-shot availability, it interfaces via I²C/SPI, making it versatile for numerous applications.

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The SparkFun Qwiic Connect System simplifies prototyping with its ecosystem of I²C sensors, actuators, shields, and cables. Utilizing a common 1 mm pitch, 4-pin JST connector, it minimizes PCB space requirements and ensures polarized connections to prevent incorrect hookups.

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Features:

Breakout Board

• Dimensions: 2.54 cm x 2.54 cm
• Two Qwiic Connectors
  • I²C Address (7-bit): 0x5A (Default)
• Four Mounting Holes:
  • 4-40 screw compatible
• Six PTH Pins
  • 3V3, GND, SCL, SDA, CS, INT
• Power LED (Red)

STHS34PF80 Features

• Voltage Range: 1.7 to 3.6V
  • Current Draw: 10 μA
• Interfaces: I²C or SPI
• Optical wavelength: 5 to 20 μm
• Range: 4 m (objects 70 x 25 cm² in size)
• Built-in Detection Algorithms:
  • Identify stationary objects
  • Distinguish between stationary and moving objects
• Field of View: 80°
• Output Data Rate: 0.25 to 30 Hz
• IR sensitivity: 2000 LSB/°C
• RMS noise: 25 LSB_rms
• Operating Temperature: -40 to 85°C (default gain mode)
• Sensor accuracy: ±0.3°C (local)
• One-shot mode
• Factory calibrated

Documents:

• Schematic
• Eagle Files
• Board Dimensions
• Hookup Guide
  • Arduino Library
• Component Datasheets:
  • STHS34PF80 Product Page
    • STHS34PF80 Datasheet
• Qwiic Ecosystem
• GitHub Hardware Repository