shop/ optical, light & imaging sensors/ r503 round fingerprint w/ 2-color ring

Measure Light and Optical Changes with a Compact Sensor

The R503 New Circular Round Two-Color Ring Indicator LED Control DC3.3V MX1.0-6pin Capacitive Fingerprint Module Sensor Scanner is a light sensor designed for light logging, auto-brightness control, and optical sensing. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.

Key details include Category: optical light imaging photon sensors.

Why you’ll love it

  • Key feature: Integrated image collecting and algorithm chip together, ALL-in-One
  • 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
  • Project-ready sensing: light logging, optical switching, line tracking, and brightness-aware projects

Compare with similar products

Product Sensor style Standout
R503 New Circular Round Two-Color Ring Indicator LED Control DC3.3V MX1.0-6pin Capacitive Fingerprint Module Sensor Scanner light sensor Current item
Fingerprint Sensor (GT-NUCL1633) optical light imaging photon sensor module capacitive touch input, motion sensing
Fingerprint Sensor AS608 Optical JM-101B For Raspberry Pi And Arduino Compatible optical light imaging photon sensor module model AS608
Color Recognition Sensor TCS3200 Module for Arduino light sensor model TCS3200

What you can build

This sensor is a good fit for light meters, line followers, UV monitors, auto-brightness systems, and optical experiments.

Starter bundles

Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus a breadboard or 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 R503 New Circular Round Two-Color Ring Indicator LED Control DC3.3V MX1.0-6pin Capacitive Fingerprint Module Sensor Scanner
The main application areas can be embedded into a variety of end products, such as access control, attendance, safety deposit box
Category optical light imaging photon sensors

Wiring & usage notes

Check the pin labels on the R503 New Circular Round Two-Color Ring Indicator LED Control DC3.3V MX1.0-6pin Capacitive Fingerprint Module Sensor Scanner and match them to your controller voltage, ground, and signal pins. Keep wiring short and verify the logic level before powering the module.

What’s in the box

1 × R503 New Circular Round Two-Color Ring Indicator LED Control DC3.3V MX1.0-6pin Capacitive Fingerprint Module Sensor Scanner

Frequently Asked Questions

What does the R503 New Circular Round Two-Color Ring Indicator LED Control DC3.3V MX1.0-6pin Capacitive Fingerprint Module Sensor Scanner 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.
What affects accuracy? Power quality, wiring, mounting, target material, and the real environment can all affect the reading. It is best to test and calibrate in the final setup.
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

// from learn.circuit.rocks

Notes from the bench

// from blog.circuit.rocks

Ask the community

// from forum.circuit.rocks