Mostly for curiosity, we bought this 20 € module on eBay and tested it. Programming Geeteech is very easy and it works quite well with Arduino, but the limitation to 5 voice orders is a little bit of disappointment. Anyway, we intend to install such a feature in the van to switch off/on, dim and change colors of the interior RGB led lights. Wouldn’t be nice, when you read your book, cozy inside the sleeping bag, after 20 pages put the book aside and switch off the lights with “Turn off”?
More tutorials in the Youtube video below:
Well, another old-fashioned way to turn off the light is – as our ancestors did before Edison invented the bulb – to blow it. Here you can read more about blowing the tiny LED.