1. The kit multivibrator composed by NE555 and CD4017 decade counter / pulse distributor components.
2. When 1,3,5 pulse arrival, Q0, Q2, Q4 sequentially output high, the blue LED flashes three times.
the first 6,8,10 pulse arrival, Q5, Q7, Q9 sequentially output high level, the red LED flashes three times, when the arrival of the first pulse 13, 15 and then the blue LED flashes in cycles alternating blue and red LED flashes to form a simulated lights look.
3. RP1 can be changed to change the size of the oscillation period, thus changing the blinking speed of the LED, the whole circuit can be operated DC9-12V.