APDS-9930 Digital Proximity and Ambient Light Sensor   

The APDS9930 Digital Proximity & Ambient Light Sensor Module is a compact optical sensing board that integrates both proximity detection and ambient light measurement in a single device. It uses the APDS9930 sensor IC, which combines an IR LED, photodiodes, and signal processing circuitry. The module communicates via the I²C interface, making it easy to integrate with microcontrollers for touchless detection, gesture sensing, and automatic brightness control.

Technical Specifications:

• Sensor IC: APDS9930
• Functions: Proximity sensing, ambient light sensing (ALS)
• Interface: I²C
• Operating voltage (VCC): 2.4V – 3.6V (3.3V typical)
• Logic level: I²C compatible
• Proximity sensing range: Adjustable, typically up to ~10 cm
• Ambient light measurement range: Wide dynamic range (lux measurement)
• IR LED wavelength: ~940 nm
• Interrupt pin: INT (for proximity or light threshold events)
• Pins: VL, GND, VCC, SCL, SDA, INT
• PCB size: Small, lightweight module

Features:

• Dual-function sensor: proximity and ambient light in one module
• Digital I²C output for easy microcontroller interfacing
• Built-in IR LED for reliable proximity detection
• Interrupt output for low-power and event-driven applications
• High sensitivity and accuracy
• Compact breakout board with mounting holes
• Suitable for low-power applications

Applications:

• Touchless proximity detection
• Automatic screen brightness control
• Mobile devices and wearables
• IoT and smart home projects
• Robotics and obstacle detection
• Human–machine interface (HMI) systems
• Energy-efficient lighting control systems