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The Raspberry Pi is a single-board linux computer that has exposed General Purpose Inputs and Outputs (GPIO). In this tutorial, I'm going to show you how to program the Raspberry Pi to control an LED using Node-RED. Then, we will create a dashboard UI to control the LED from any web browser. You will need a Raspberry Pi 3 B+, an LED & Resistor, breadboard, and jumper wires to complete this project. I recommend the Cana kit because it has all the components you need (and more). First, you'll need to install NOOBS on an SD card (8GB or greater). You can download NOOBS from the Raspberry Pi website. It's a pretty large download, so while that's running, let's wire up our circuit!

Wire an LED to Raspberry Pi GPIO

This is the wiring diagram we will use for Raspberry Pi Node-RED program. Connect the resistor and positive leg of…

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Wire an LED to Raspberry Pi GPIO

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Raspberry Pi Node-RED LED Wiring
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Enable SSH and Connect to the Raspberry Pi (Headless)

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Install Node-RED for Raspberry Pi

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Run Node-RED on the Raspberry Pi

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Raspberry Pi Node-RED
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Create Nodes to Turn the LED on & off

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Raspberry Pi Node-RED LED ON
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Raspberry Pi Node-RED GPIO Settings
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Node-RED GPIO Raspberry Pi
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Raspberry Pi Node-RED LED OFF
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Create a Node-RED Dashboard for Raspberry Pi

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