“Previously I talked about a LED box. I explained how to operate a ws2812 led strip. Thoses strips can be connected together in serial.
After a first try one year ago, I built this clock from scratch with 360 leds, divided in 3 parts.
Mecanical
My first try was not a success. I bought some 1cm wide bars. Those aluminium bars can be easily bent in circles. However it is impossible to have a perfect circle. If the circle is wide the shape seems good. With smaller circles (diameter < 50cm) it looks bad.
Back to the basis : wood circles ! With a jigsaw (thanks @bluxte) and a simple wire it is the best way for perfect circles. I learned that at the age of 6 :-). I made 3 concentric circles : one with 60 leds, a second with 120 and the last have 180 leds.
There is 60 leds per meter on this strip. I need a 31,8cm diameter circle (100 / 3,14). I glued the strip on the edge.
Behind I removed some wood where the wires reach. On the final result, no wires are visible.
Wood circles are glued together after wiring. Remember for next time : painting will be far easier before gluing leds…”