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Building Electronics Kits at JOTA
Over the years a wide variety of electronic kits have been constructed. Noisy ones like sirens, hee-haw sounds, monophonic organ, and so on. Others have lights that flash in various combinations, such as the image on the left.
Red and Green Flasher
Using two light emitting diodes and a 555 integrated circuit this is
the classic flashing light kit. Use a multimeter to measure the
components.
Electronic Dice Kit
At the press of a button seven light emitting diodes flash briefly and
one pattern stays lit, representing a number between 1 and 6.
Truly random and never rolls off the table!
Siren and Windmill Kits
The picture below shows the windmill, with light emitting diodes that
flash in a rotating pattern, and a ding-dong doorbell. Guaranteed to
annoy you when visitors arrive.