I made this Arduino project that allows to turn ON and OFF LEDs using a cheap IR remote control as a preparation for the next big step: disassemble my girlfriend’s chinese LED lamp and replace its ...

This circuit uses invisible infrared light to detect the movement of people through the door. ... Two Infrared LEDs always emit continuous infrared beam to the Photodiode. ... Resistor R1 is the ...

Circuit Connections: IR Sensor VCC connects to Arduino 5V to provide power. IR Sensor GND connects to Arduino GND to complete the circuit. IR Sensor OUT connects to Arduino Digital Pin 2 to read the ...

This project demonstrates a simple Arduino circuit that makes an LED blink on and off. The circuit uses an Arduino UNO, an LED, a resistor, and connecting wires. Connect the longer leg (anode) of the ...

If our example resistor ended in gold (orange, white, black, gold), its 39 Ohms value could be five percent higher or lower. For a possible minimum of 37.05 or a maximum of 40.95.

On power-up, current flows through resistor R1, and the LED inside the opto sensor is illuminated continuously. The LM555 (IC1) is wired as a light detector plus medium-current inverting line driver.