Features:

1. This kit uses NE555 CD4017 chips and circuit simulation lights, blue LED and red LED flash alternately according to the pulse respectively, adjusted RP1 adjustable blinking frequency.
2. Circuit voltage of DC9-12V, kit without power (battery).
3. The kit is simple to install, suitable for any beginners to learn and practice electronic soldering.

Circuit board characteristic:

1. Adopt 1.5mm high quality electric board full process, the pad increase, thicker wire, the layout of the components is beautiful.
2. The optimization design was carried out for special training, convenient bear repeated desoldering,can improve the efficiency in the use, the price is high.
3. Red flashing lights and blue flashing lights into a separate board, through the stamp hole chain receives themainboard, generally do not need to remove, installed after the results. If you need to separate installation to other places or to increase the distance, can move off from stamp hole, and then through the two wires connected to the motherboard, so you can install it to any other place.
4. The kit provides schematic details, has posted thenumber position plate, convenient training examination and marking.

Working principle:

• The kit multivibrator composed by NE555 and CD4017 decade counter / pulse distributor components.
• 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.
• 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.

Tested by ICStation's Outstanding Partner Kerry Wong and Future enginner little Alex: