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Measure Light and Optical Changes with a Compact Sensor

The Photosensitive Diode Sensor Module is a ph sensor designed for light logging, optical switching, line tracking, and brightness-aware projects. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.

Key details include Working voltage: 3.3V-5V; Interface: Analog and digital.

Important: Water-quality sensors usually need calibration solutions and regular probe care. Probe condition and temperature can affect the reading.

Why you’ll love it

  • Key feature: Digital value and analog quantity double output
  • Adjustable sensitivity : Adjustable sensitivity
  • Power range: 3.3V-5V
  • Easy wiring: Analog and digital
  • Maker-friendly build: Easy to use in prototypes, classroom projects, and custom electronics
  • Common controller support: Works well with Arduino, ESP32, Raspberry Pi, and similar boards

Compare with similar products

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Color Recognition Sensor TCS3200 Module for Arduino light sensor model TCS3200

What you can build

This sensor is a good fit for automatic brightness control, line followers, light meters, UV monitors, flame detection, and optical encoders.

Starter bundles

Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus a breadboard and jumper wires for quick setup and testing.

Recommended add-ons

Useful add-ons include breadboards, jumper wires, displays, enclosures, and logging modules, depending on how you plan to power, mount, and log the sensor.

Technical specifications

Product Photosensitive Diode Sensor Module
Robotics and automation In robotics and automation, photosensitive diode sensor modules are used to track the location and motion of objects by detecting changes in light intensity.
Medical equipment Pulse oximetry, phototherapy, and blood oxygen level monitoring are only a few applications for photosensitive diode sensor modules in medical equipment.
Working voltage 3.3V-5V
Security systems By detecting changes in light patterns, these modules are employed in security systems to detect unauthorized access or movement.
Industrial automation They may be utilized for activities like part detection, product counting, and quality control in industrial automation.
Measurement of ambient light intensity These modules are employed in applications such as automatic display brightness management, light meters, and environmental monitoring systems.
Interface Analog and digital

Wiring & usage notes

Many modules in this style expose both analog and digital pins. Use the analog pin for raw readings and the digital pin for threshold-based switching, if available. Water-quality sensors usually need calibration solutions and regular probe care. Probe condition and temperature can affect the reading.

What’s in the box

1 × Photosensitive Diode Sensor Module

Frequently Asked Questions

What does the Photosensitive Diode Sensor Module measure? It is designed to measure light, color, or optical changes.
Can I use it with Arduino, ESP32, or Raspberry Pi? Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.
How do I connect this Analog and digital sensor? This module may provide both analog and digital outputs, depending on how you wire and read it.
Does it need calibration? Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.
Is it good for prototyping? Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.

Build with this board

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Notes from the bench

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