Brand: Yidab

The circuit uses sound to control 11 LEDs to light up in a flowing manner, which is suitable for assembly practice, skill training, assembly competitions and so on. This kit can display the functions of CD4017 in a very intuitive way and is a kit for learning about counters, frequency dividers and color lamp controllers. Meanwhile, this kit has excellent effects, is full of interest and practicality, and is also the preferred material for beginners to get started. Q1 and its peripheral circuits form a simple amplification circuit. The MIC converts sound signals into electrical signals, which are then coupled to Q1 through C3 for amplification. A voltage signal with high and low changes is formed at the collector of Q1. The voltage with sufficient amplitude is sent to the counting input terminal (pin 14) of CD4017. Every time a pulse arrives, the high level output from Q0 - Q9 of the counter shifts by one position in sequence, lighting up the corresponding light-emitting diodes and thus creating a flowing effect. Among them, L11 is connected to the counting output terminal C0 of 4017. When L1 - L5 are lit, the C0 terminal of 4017 outputs a high level and lights up L11. When L6 - L10 are lit, the C0 terminal outputs a low level and L11 is not lit. If you think L11 affects the aesthetics, it can also be installed without affecting the operation of the circuit at all.

Features:

• Sound-Responsive LED Effects - Automatically creates dazzling chasing light patterns that synchronize with music or ambient sounds using built-in microphone sensor
• Easy 12V DC Operation - Simple power connection with clear polarity markings (+/-) for hassle-free setup and immediate visual feedback
• Complete Learning Kit - Includes 10 bright LEDs (L1-L2), capacitors (100?F), resistors (20K?) and PCB for comprehensive soldering practice
• Perfect STEM Educational Tool - Teaches fundamental electronics concepts including sound detection circuits, current flow, and LED multiplexing
• Instant Project Satisfaction - No programming required - complete assembly creates fully functional light show perfect for bedrooms, parties or maker displays

Product Details:

• Model: Tesla coil
• Package Quantity: 0