Low-cost Christmas project: twinkle, twinkle little tree!

摘要

Our huge Stackable LED Christmas Tree from last year was a big hit, at least in part because you could use it to build a vast tree, up to a metre high-or even taller. This project is at the other end of the spectrum; you can build trees so tiny that you could wear them as a badge, attach them to Christmas presents ... or even use them to decorate a larger Christmas tree. You could even hang them on the giant LED tree (you could call it "Tree-ception"). PCBs and kits for last year's expandable tree (November 2019; siliconchip.com.au/Article/11297) are still available. So if you want a big, illuminated tree, go for it. But if you want to try something a little different, read on.