LED Fireworks
Electronic kit with 73 LEDs that produces a striking "firework" effect, thanks to the LEDs lighting in sequence from the centre outwards under the control of an NE555 and a CD4017.
SKU 7100-FK046Item type: Assembled, KitEducational kits, Mood lighting & gadgets
Description
An original electronic kit with 73 LEDs arranged in a star, designed to create a striking light effect like a firework. The LEDs light up in sequence from the central one outwards, giving a lively, spectacular animation.
The circuit uses an NE555 timer wired as an astable oscillator to generate the clock pulses the CD4017 counter needs; the counter then drives the groups of LEDs one after another through dedicated transistors. The LEDs are arranged in 9 rays of 8 LEDs each, in different colours to make the effect even more realistic.
Ideal for electronics enthusiasts, makers, students and teaching projects, it is a hands-on way to see how oscillators, CMOS counters and LED driver circuits work.
Soldering is required to assemble it. The kit is supplied complete with assembly instructions.
Circuit diagram
What this kit contains
- Ø 107 mm printed circuit board
- Red and yellow 3 mm LEDs (73 pieces)
- NE555 and CD4017 integrated circuits
- Driver transistors
- Passive components (resistors, capacitors, trimmer)
- IC sockets
- Jack power connector
- USB power cable with jack plug
Technical details
| Supply voltage | 5-9 Vdc |
|---|---|
| Current draw at 9V | 100 mA |
| Scan frequency | 4.8-14.4 Hz |
| Display | LED |
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