My second iteration of the LED time piece. This prototype is a much higher fidelity and uses a tallish container I got from the container store. I’m using the container upside down with a hole cut at the bottom end for the USB cable and the Arduino stuck on the lid of the container. The LED’s are mounted around a tall cardboard structure, in 3 rows, which sits tight once stuck inside the container. The LED’s light up one row at a time and the light appears to move up and down the container. Row 1 and 3 are blue LED’s while row 2 is green LED’s. Kitchen towels doubled and nicely tucked into the container are used to diffuse the light.