Beyond pretty patterns we see it mounted on a bicycle for a head-up display of speed and navigation info. Then the software allows all sorts of custom displays for your creative expression, including uploading quick sketches over WiFi. ![]() The ESP32 module drives a couple of DACs which in turn drive the galvanometer motors through a pair of amplifiers. It’s mounted in an SLA 3D printed enclosure which neatly holds all the parts. The video below the break is in Chinese so you’ll have to turn on the subtitles if you’re an Anglophone, and it takes us through the whole process. shows us how with a neat unit using an off the shelf RGB laser module and mirror module, driven by a ESP32 with software designed to make it as easy as possible to use. ![]() Perhaps there was a time when fancy laser effects were beyond those without the largest of bank accounts, but today they can be created surprisingly easily.
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