DIY IR Trip Sensor based Stairway LED Lighting
Instructables member ElJefeUno brought an awesome electronics project of building an Infra-red (IR) light trip sensor to light up your stairway. The sensor uses a directional IR LED beamed at a sensor that shoots past where you’ll walk. When you interrupt the light from the LED, the LEDs turn on for a period of time that you can adjust. Advantages of using IR LEDs includes: safe operation, low power consumption,