What is Node-RED?

Introduction This guide will walk you through the steps neccessary to connect your Bean to another device using Node-RED, a visual programming interface that requires very little coding experience. Node-RED Basics Node-RED is based on Node.js. The Node-RED application runs as a web server, and you customize and manipulate functional “flows” from any computer’s browser, local or remote. Every Node-RED app co ...

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64×16 RED LED Marquee

The purpose of this small scale LED marquee is to display messages to our classroom in a more modern and centralized way. In the classroom, this construction would save white board space and is convenient because it can store a large amount of information. It is also fairly simple to program and has a mount, making it easy to place anywhere within the classroom setting. Step 1: Materials The first step of t ...

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‘Most powerful’ infra-red LEDs

LED Engin has announced a quad die infra-red LED emitting 4.5W of flux, from 850nm and 940nm variants. “The four die parts are the world’s most powerful IR emitters,” said the firm, which has also released some deep red emitters. Called LZ4, the IR LEDs have a 7x7mm footprint and the firm’s dual-junction emitters. Heat management is a priority and the package is a proprietary thermal expansion matched multi ...

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