Measure Light and Optical Changes with a Compact Sensor

The Flame Sensor for Arduino is a light sensor with uart 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 Supply voltage: 3.3 V to 5 V DC; Two outputs: use D0 (LM393 comparator) for on/off alarms, or A0 to read intensity via ADC.; Interface pins: VCC, GND, D0, A0.

Why you’ll love it

Flame sensor module (Analog + Digital): Flame sensor module (Analog + Digital)
Useful spec: IR flame sensor (photodiode/phototransistor tuned to ~760–1100 nm)
Sensing range: Up to ~80–100 cm for a lighter flame in dim light ( depends on flame size & ambient IR )
Easy wiring: VCC, GND, D0, A0
Power range: 3.3 V to 5 V DC
Compact size: Small module; fits breadboards and mini project boxes (dimensions vary slightly by batch)

Compare with similar products

Product	Sensor style	Standout
Flame Sensor for Arduino	light sensor with UART	Current item
Flame Sensor Analog	light sensor with analog and digital output	analog output, digital output
Flame Analog Sensor Gravity	light sensor with analog output	analog output, remote probe format
Light Ambient Analog Sensor	light sensor with analog output	analog output

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 or jumper wires for quick setup and testing.

Recommended add-ons

Useful add-ons include USB-to-serial tools, level-safe controllers, displays, and data loggers, depending on how you plan to power, mount, and log the sensor.

Technical specifications

Product	Flame Sensor for Arduino
Sensor type	IR flame sensor (photodiode/phototransistor tuned to ~760–1100 nm)
Logic level	3.3/5 V compatible digital output (module-dependent; typical TTL high ≈ VCC)
Typical range	Up to ~80–100 cm for a lighter flame in dim light ( depends on flame size & ambient IR )
Interface pins	VCC, GND, D0, A0
Outputs	D0 (digital, TTL, threshold via LM393) • A0 (analog voltage proportional to IR intensity)
Two outputs	use D0 (LM393 comparator) for on/off alarms, or A0 to read intensity via ADC.
Supply voltage	3.3 V to 5 V DC
Board size	Small module; fits breadboards and mini project boxes (dimensions vary slightly by batch)

Wiring & usage notes

Connect power and ground, then wire TX and RX to a serial-capable controller at the correct logic level and baud rate.

What’s in the box

1 × Flame Sensor for Arduino

Frequently Asked Questions

What does the Flame Sensor for Arduino 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 UART sensor? This version uses UART or serial output, so you connect power plus TX and RX at the correct logic level.

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.