tingbowie Soldering Practice Kit – DIY Electronic Soldering Project Training Board for Beginners

Working Voltage: 3V-6Vcircuit principle:Circuit principle: The circuit is mainly composed of a pulse generator and a decade counter circuit. The pulse generator consists of NE555 and peripheral components to form a multivibrator. When the button S1 is pressed, Q1 is turned on, and pin 3 of NE555 outputs pulses, and 10 output terminals of CD4017 output high levels in turn to drive 10 LEDs to emit light in turn. After the button is released, Q1 will not be cut off immediately due to the presence of capacitor C2. As the voltage across C2 drops, the conduction process of Q1 will gradually weaken, the frequency of the output pulse of pin 3 will slow down, and the frequency of LED movement will also follow. slow down. Finally, when the discharge of C2 ends. Q1 cuts off, pin 3 of NE555 no longer outputs pulses, and the LED stops moving. This completes the drawing process. R2 decides the speed of LED movement, and C2 decides the time to wait for the lottery.Product Description:The lucky turntable is a tool to predict where the rotating disc will stop when it stops. It can also be used as a number estimation game, electronic dice, lottery machine, etc. The electronic lucky turntable achieves the same function in an electronic way. This kit configures 10 LEDs into a circle. When the button is pressed, each LED lights up in turn. At the beginning, the flow speed is very fast. It seems that all The LEDs seem to flicker all together, and the flow speed will become slower and slower, and finally stop on a certain LED and stop moving. If the last LED that lights up is the same as the player predicted, it means you have won a prize.

• The lucky turntable is a tool to predict where the rotating disc will stop when it stops. It can also be used as a number estimation game, electronic dice, lottery machine, etc.
• Practice your soldering and learn electronics.
• Designed for Beginners：Special design for electronics starter to learn to solder electronics components. Soldering project kit will improve your electronic knowledge and soldering skills in practice
• Working voltage:3-6V
• Warm Reminder ：DIY electronic components kit requires buyer to assemble and welding, If you don't have any soldering experience, please read the soldering instructions and use soldering tools carefully to avoid safety problem