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Build Your Own IR Windshield Rain Sensor (.PDF Download)

In this article, we implement a rain and ice sensor by analyzing the reflection of an infrared (IR) light source. This project uses proven techniques based on multiple reflections of IR light in the internal walls of the target glass. It will aim to increase the capabilities of standard components by adding technical advantages offered by the LED device, such as increasing the power emission using pulsed energy applied 10 times using high current strikes at a 1% duty cycle.

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