This electronic kit features a creative LED dot matrix hourglass display with gravity-sensing function. When the device is rotated, the LED "sand" dynamically flows, simulating a real hourglass. It is ideal both as a fun desktop ornament and as a practical timing display for everyday use. Designed as a hands-on soldering practice project, this kit helps beginners and enthusiasts improve their soldering techniques and understand basic electronic circuits. It is suitable for students, DIY hobbyists, and anyone who wants to gain experience assembling electronic components. Built-in gravity sensor automatically detects device orientation and changes the LED dot matrix pattern accordingly. The simulated hourglass timing effect is intuitive and visually engaging, offering both entertainment and educational value. The kit operates on a DC 5V power supply, making it compatible with USB adapters, power banks, and common 5V power modules. Low-voltage operation improves safety and makes it convenient to power on a desk, in a workshop, or in a classroom environment. The printed circuit board is clearly labeled to guide component placement, helping reduce assembly errors. Included components such as resistors, capacitors, LEDs, ICs, and sensor parts are selected for stable performance and long service life. Color: As Shown Material: plastic Package Contents: 1*LED Dot Matrix Electronic Hourglass Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.