Describe:
Use 30 high-brightness fog LEDs instead of sand, no matter how the direction is reversed, the bottom 15 lights will light up slowly, and the speed can be adjusted. Can be used for timing, playing, etc. Extremely playable
Description:
Working voltage:DC 3.3-5V
Current consumption: less than or equal to 15mA
Shape Size:75 x 44 x 23mm / 2.9 x 1.7 x 0.9in
Hourglass Speed:Adjustable
LED Color:Blue
Feature:
1.This is a beautiful electronic hourglass that is fun to build and nice to look at when finished, it is not only a PCB board for practicing welding skills, but also a decorative gift for you.
2.The suite adopts double layer PCB, and the circuit consists of 30 pieces white LED blue ray, has clearly marked the electronics components, very easy to assemble.
3.Under the control of MCU program, it displays analog hourglass image. It can be used as decoration of small night light.
Product details:
1. There are silk screen logos of various components printed on the PCB board, please solder according to the silk screen logos;
2. The resistance is not divided into directions, but there are different resistance values, please pay attention to distinguish it when welding;
3. Electrolytic capacitors are divided into positive and negative poles, the long leg is positive (+), and the short leg is negative (-); pay attention to the corresponding when welding
Screen printing direction on the PCB board;
4. The negative pole of the LED short pin corresponds to the upper plane side of the board;
5. When connecting the power cord to the terminal block, pay attention to distinguish the positive and negative poles, and do not connect them in reverse.
Package includes：
1 x Blue LED Electronic Hourglass DIY Kits
1 x AA Battery Holder 3x1.5V