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    • Three-Dimensional 3D Tree Led Diy Kit Red/Green/Yellow Led Flash Kit Electronic Fun Suite

    USD $4.11VAT Included50% OFFFree Shipping
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    • Ships in 24 hours via Fast Shipping.
    • Estimated Delivery 5 to 9 Business Days.
    Customer Reviews
    *Note: Some reviews have been processed by Google Translate!
    C***t Verified Buyer

    Well you can take... He was delighted with his son. Have stock on details. Which is really great when you learn to melt.

    5
    N***r Verified Buyer

    A very successful designer in order for the child to make a gift to grandparents teachers.

    5
    B***y Verified Buyer

    Christmas tree packed all the wounds all fine for the new year are ready!

    4
    V***f Verified Buyer

    It's okay. Took two sets. We collect, I'll add a comment. Thank you.

    5
    Q***r Verified Buyer

    Sent time great sellers I satisfied quality good mood good!!!!!!

    5
    X***t Verified Buyer

    Sent time great sellers I satisfied quality good mood good!!!!!

    5
    R***p Verified Buyer

    Good set to the child to gift grandfathers-grandmothers

    5
    H***p Verified Buyer

    Good set to the child to gift grandfathers-grandmothers

    5
    S***i Verified Buyer

    Very fast delivery. Performance high. Thank you.

    5
    S***v Verified Buyer

    Everything is OK, accordingly description

    4
    Q***r Verified Buyer

    Everything came very quickly

    5
    U***l Verified Buyer

    Arrived in good condition

    5
    W***l Verified Buyer

    Christmas tree-Super!

    5
    K***b Verified Buyer

    Everything is fine

    5
    R***i Verified Buyer

    Very accurate

    5
    L***i Verified Buyer

    Not yet.

    5
    O***q Verified Buyer

    ok

    5

    Model Number: 3D Christmas Tree LED DIY Kit
    is_customized: Yes




    • This circuit is composed of 16 pcs LED (light emitting diode). The 16pcs LED divided into four groups, and each group has different flashing frequencies, when four groups flash together, this item looks like a small Christmas tree. The circuit is powered by a 9V battery.

    • Advantages:

    • This circuit is simple and practical, low power consumption.It uses integrated circuits for driving: fewer parts,and the line is simple and easy to understand.

    • External Wiring Kit:

    • With pluggable plug for easy replacement of parts at any time and conducive circuit debugging. Also allows us to deepen our understanding of the principles of the circuit in the debugging process.

    • This line is in the form of the oscillation circuit by the cycle generated by the following principles:

    • - after the first charge, the capacitor C1 & C4 charging is complete.

    • - capacitors C2 & C3 will continue to charge.

    • - when the transistor Q1 & Q4 is turned on at the same time, it discharges the capacitor C1 & C4.

    • - capacitors C2 & C3 is fully charged, the transistor Q1 & Q4 will be closure, while also charging the capacitor C1 & C4 again.

    • - transistors Q2 & Q3 is turned on while the capacitor C2 & C3 will be discharged.

    • - By analogy, the flash of speed is the oscillation frequency, and the frequency is determined by the resistor R & capacitance C values.

    • - Board Size:70mm*110mm