Product describe: The product consists of 10pcs 5mm red light-emitting diodes. After pressing the switch, the LED lights flash rapidly in turn, and randomly stays after a few seconds. One of the LEDs is on and the other LEDs are off. This formed a lucky turntable.
Principle of the circuit:LED electronic lucky turntable consists of NE555 multivibrator and CD4017 decimal counter / pulse distributor. 10 light-emitting diodes simulate a lucky object.
Welding skills:The resistor does not distinguish between positive and negative electrodes; the long pin of the capacitor is positive; the long pin of the LED are positive; The integrated circuit is first installed with a socket, and the chip is installed after the circuit is completely installed. Note that the chip notch position is installed facing the circuit board notch mark.
Product parameters:PCB diameter:50mm; input voltage:3-6v;Required tools: electric iron: 30W, solder wire: 0.8mm, tweezers, oblique pliers, multimeter.
Suitable for electronic DIY electronic hobby beginners to learn and practice welding.It is widely used in schools to help students learn basic mechanical and electronic skills.
Logistics information
Our products are located in Hong Kong, China, and the logistics speed depends on your specific location. According to our experience, it usually takes about 15-20 days of transportation time
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How to choose the correct size:
Step 1 Please measure your foot length carefully.
Step 2 Please choose the correct size according to your foot length and chinese size.
For example, If your foot length is 255 mm , you should choose the size 8.
