
This kit features two independent circuits that alternately flash four LEDs at the rate of four times per second.
Sometimes the lights appear to flash randomly due to the differences in the component tolerances -- a super visual effect!
LED colors are red, green, yellow, and blue.
Flash IV Kit: $4.95
Same circuit as Flash IV but comes with dazzling ultra-bright LEDs! Choose from red, green, yellow, orange, white, or blue.