![]() ![]() While playing with Raspberry Pi 3’s & 4’s over the last few years, I’ve often encountered low supply voltage issues. Device labels edited out here for security reasons!īe aware of the risks mentioned in this post! The wifi devices are all Access Points on two separate subnets. Here’s another, still unfinished flow, adapted from this example. #QOOBAR MULTIPLE PERFORMERS WINDOWS#Node-Red can run on Windows as well, even on older versions like my Windows7 pc. Steve’s Node-Red Guide is another good place to visit. Here’s one chosen almost at random, which seems to cover the basics quite well for a Raspberry Pi implementation. The internet is awash with Node-Red info and tutorials. #QOOBAR MULTIPLE PERFORMERS CODE#To this day, I cannot write a line of code using JavaScript (although intend to learn), but with a huge range of ready-made flows and custom nodes available online, this Node-Red flow was produced by copying and modifying an existing one, and installing a few extra modules that were needed. So here’s a first attempt: Drag, Drop, and hook up! A dashboard can be quickly assembled from ready-made components (nodes) for direct display in a browser, or even embedded in a webpage IFrame. The big attraction of using Node-Red is that it’s powerful, flexible, and easy to use. Looking at the queries on the Node-Red forum, it’s clear that they are popular as front ends for industrial Programmable Logic Controllers (PLCs) such as those produced by Allen-Bradley. In a period of curtailed supply, thanks to COVID, this sector was prioritized over the consumer (or prosumer) market. One of the reasons given for the recent shortages of Raspberry Pi hardware is that it’s been adopted by industrial users. Having verified over the last year that these services happily coexist, a Node-Red flow was recently added to monitor the machine’s own performance, based on this example. HA dashboard (Dashticz), also hosted on this machineĪnd finally, Node-Red was added, initially for its MQTT features, but here used for its monitoring capabilities. These two systems can be accessed independently, but also interact in a: Our main Raspberry Pi 4, mentioned in various posts, continues to work on as: ![]()
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