The CNY-70 Reflective Optical Sensor is a compact infrared sensor that combines an IR emitter and a phototransistor receiver in a single package. The emitter sends out infrared light, and the phototransistor reads how much of it bounces back from a nearby surface, letting your circuit tell light surfaces from dark ones or detect whether an object is close. It is a popular choice for hobbyists, students, makers and anyone building small electronics or automation projects.
Key features
- Reflective design with built-in infrared emitter and phototransistor in one CNY-70 module.
- Detects nearby surfaces and objects by reading reflected IR light.
- Small footprint that fits easily on breadboards, prototypes and custom PCBs.
- Commonly used with microcontroller boards such as Arduino and similar platforms.
Typical uses
- Line-following robots that track black-and-white tracks.
- Simple object and obstacle proximity detection.
- Position and edge sensing for small machines and DIY automation.
- Encoder-style counting and rotation-marker reading.
How to choose / tips
- Keep the sensor close to the surface you want to read for the most reliable response.
- Pair it with a suitable resistor and a microcontroller input to read its signal.
- Reduce strong direct sunlight on the sensor face, which can affect IR readings.
- Order a few spares when building multi-sensor arrays for robotics.
Why tna W rna
At tna W rna we focus on quality components and reliable sourcing for makers and students. Enjoy fast delivery across Egypt and convenient cash on delivery, so you can build your project with confidence.
