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Overview In this tutorial you will learn about Node Red and how to control Raspberry Pi board using its GUI. What You Will Learn Introduction to Node RED and how to install it How to control LED in a graphic environment with Node RED Monitor the status of a button using Node RED What is Node RED? Node-Red is a programming tool for connecting hardware, APIs and onl...

TCRT5000 IR SENSOR Features The TCRT5000 sensor consist of an IR transmitter and IR receiver. When the proper voltage is applied to the infrared transmitter, it transmits and emits infrared waves. When these waves collide with an object, the infrared receiver, which is a phototransistor, receives the waves. A phototransistor works like a normal transistor, except that its base is excited by light. Note This sensor works best for objects in the range of 0.2 to 1.5 cm. You can download the datashe...