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A kit of parts to make a circuit that flashes 6 LEDs at random. The circuit is really 6 separate circuits combined into a single chip: a CMOS 40106 Hex (6) Schmitt trigger.
The overall circuit is made up of 6 relaxation oscillators directly driving 6 LEDs. The free-running oscillator frequencies soon drift apart and become out of sync, thus producing an eye-catching 'random' display. By angling the LEDs and adding ping-pong balls as light diffusers, striking effects can be achieved with relative simplicity. The circuit is compact and economical enough to be used to enhance anything that would benefit from some flashing LEDs.
|83-0482||40106B hex Schmitt trigger||1|
|62-0466||10MΩ CR25 0.25W carbon film resistor||6|
|62-0370||1kΩ CR25 0.25W carbon film resistor||6|
|08-0235||100nF 5mm ceramic disc capacitor||6|
|18-0092||TruPower PP3 battery clip (heavy duty) end entry||1|
|70-1052||6 LED flasher PCB||1|
|55-0125||Kingbright L-7113YD 5mm 2.1V yellow LED 20mcd||2|
|55-0155||Kingbright L-7113ID 5mm 2V red diffused LED 45mcd||2|
|55-0122||Kingbright L-7113PGD 5mm 2.25V green LED 5mcd||2|
|18-2909||Battery box 4x AA with switch||1|