Lifehacker Everything You Need to Get Started Controlling a Raspberry Pi's GPIO with Node-RED Lifehacker In order to make use of this guide, you'll need a Raspberry Pi , a breadboard, buttons, a few LEDs, and some wires. From there, the guide walks you through using the Node-RED program to control those lights and do plenty of other things with the GPIO

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Everything You Need to Get Started Controlling a Raspberry Pi’s GPIO with Node-RED – Lifehacker