ZY-98-2 Music Rhythm LED Flashing DIY Soldering Kit, CD4060 Counter IC 12 RGB LED Running Light PCB Module, DC4.5~5V Adjustable Flash Speed STEM Electronic Practice Kit with Buzzer

About this item

• Model: ZY-98-2; Working Voltage: DC4.5V~5V; PCB Dimension:75×45mm; PCB Material: High-quality FR-4 Fiberglass Substrate; Equipped with total 12pcs tri-color LEDs(red/green/yellow), music buzzer, trimmer potentiometer; Kit includes full loose components, PCB, paper schematic diagram & parts list; Unassembled spare parts need manual soldering.
• Core control chip adopts CD4060 14-stage binary counter with built-in oscillator; R1/R2/R3 + electrolytic capacitor form external RC oscillating circuit; adjust variable resistor R3 to change oscillation frequency and freely speed up/down LED chasing flashing rate; periodic automatic reset design makes LEDs cycle flowing repeatedly.
• Built-in dedicated music IC drives passive buzzer to play fixed melody; LED flowing light flashes synchronously along with music rhythm after power on, combines audio and visual effect for vivid demonstration of digital circuit working principle.
• Mix of SMD patch resistors and through-hole components on PCB, ideal intermediate soldering practice kit after basic through-hole welding training; clear component parameter silkscreen printed on board for convenient referencing during soldering without extra drawing checking.
• Essential teaching accessory for middle school & university Digital Electronic, Pulse Counter, RC Oscillation principle class; finished board can be used as small desktop decorative ambient lamp, DIY craft gift for electronic hobbyists.