A LED or a phototransistor?! | Low voltage. Mostly harmless...
IR LED and phototransistor beam counter - Sensors - Arduino Forum
Infrared Detector Circuit using Phototransistor
Infrared Detector Circuit using Phototransistor
Infrared Detection
Infrared Phototransistor 940nm 5mm Round LED Technical Data
![Miniature Reflective Infrared Optical Sensors - 5 Pack [ITR20001/T] : ID 3930 : $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits](https://cdn-shop.adafruit.com/970x728/3930-00.jpg "Miniature Reflective Infrared Optical Sensors - 5 Pack [ITR20001/T] : ID 3930 : $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits")
Miniature Reflective Infrared Optical Sensors - 5 Pack [ITR20001/T] : ID 3930 : $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits
sensor - Simple IR pulse detector with IR phototransistor - Electrical Engineering Stack Exchange
Arduino IR Proximity Detector - File Exchange - MATLAB Central
Using Infrared Technology for Sensing | DigiKey
Infrared Phototransistor (5-Pack) - ProtoSupplies
INFRARED LED IR AND PHOTO TRANSISTOR SIMPLE CIRCUIT - YouTube
Infrared Phototransistor
IR LED and phototransistor for pulse rate sensor - YouTube
5mm IR Infrared LED Pair Receiver Transmitter 3mm Photo Diode RX Photo Transistor TX at Rs 3.90/pair | ELECTRONIC SENSORS in Bengaluru | ID: 4563961491
Detecting a small and fast object - Project Guidance - Arduino Forum
100pcs 5mm Ir Led Emitting Diode 850nm 940nm Emitter Receiver Infrared Transmitter Phototransistor Photodiode Invisible Diy Pcb - Diodes - AliExpress
5pair PT204 6B IR204 A Everlight Infrared Phototransistor and Everlight Infrared LED Lamp|phototransistor infrared|lamp lamplamp led - AliExpress
bjt - IR Led & Phototransistor pair bandwidth issue - Electrical Engineering Stack Exchange
Infrared Phototransistor (5-Pack) - ProtoSupplies
Breakout Board for Vishay IR LED and PhotoTransistor - IRI
infrared - How to detect IR pulse using phototransistor and voltage comparator (subtracting constant light) - Electrical Engineering Stack Exchange
How to Build an Infrared (IR) Phototransistor Receiver Circuit
AnalogSampling - infrared receiver circuit using an infrared (IR) phototransistor · Issue #239 · gioblu/PJON · GitHub
The electronic circuit connecting the phototransistor and an IR LED to... | Download Scientific Diagram
Phototransistor usage. - General Electronics - Arduino Forum
