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If you have no idea what to do, I will introduce you the projects from our customers that may light up your inspiration. Let's see what our customers accomplished last year.
#1 This is a project of father's task made by the kids . They are the youngest participant in Elecrow Christmas PCB contest. This project may be their first time to make their own Christmas decorations with PCB. I guess this items would be their unforgettable memory of Christmas 2016. Although this design are neat, I'm sure they can do much better one in the future.
#2 This is the champion project. You can use Arduino to control these WS2812B leds. The stars can be made any visual effect and on the each star the visual effect can be different at the same time. You're limited only by the imagination and programming skill. The creator Tomek Dutka also designed a snowflake Christmas PCB ornament, you can click the words link to find more description, images and videos of his project. #3 This cartoon Elk PCB artwork makes people laugh, kinds of humor design. The circuit is pretty simple, but the sculpt make it standout. Actually, you can make your own funny PCB items even you're not specialized in PCB layout. #4