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High-quality double-sided PCB board is used, and the circuit is composed of LED hourglass patterns.
Under the control of the single-chip microcomputer program, it presents a simulated hourglass effect.
A micro switch adjusts the speed of the hourglass and lights up the LED light.
It can be used as a decorative lamp with low power consumption, environmental protection and energy saving.
The assembly process can greatly exercise your hands-on ability and cultivate interest in learning electronic technology.
Color: red green blue
Package Includes: 1 set
Please allow minor errors due to manual measurement.
The colors may be a little difference for the different monitor display.
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