Using light-emitting diodes instead of sand, this project simulates the movement of an hourglass. Works like a real hourglass, the upper part of the sand (light emitting diode) goes down one by one, and the lower part of sand is piled up one by one. After the drain is completed, click the switch to restart your hourglass.
The jog switch can adjust the hourglass speed, max. 28 LEDs lit at the same time
Can be used as a decorative night light, power consumption of less than 0.5W, and is very environmental protection and energy saving.
Note: This is a DIY kit, you need to assemble it.