Tainrunse 1Pcs LED Flashing Christmas Tree DIY Kits, 3D Xmas Tree Soldering Kit Christmas Tree Soldering Project, Funny Beautiful Decorative Wood Electronics Soldering Colorful 3D Xmas Tree A

Price: $2.55
(as of Jan 19, 2024 12:54:02 UTC – Details)

Production Steps:
Firstly, Solder CTR-30A circuit board (referred to as A board)
1. Solder 4 resistors (R1 R3 R5 R7)
2. Solder 3 resistors
3. Weld 3 triodes and adopt the horizontal installation method (with direction)
4. Weld 3 electrolytic capacitors and adopt the horizontal installation method (with direction)
5. Solder the red LEDs (with direction)
6. After folding the pins, insert the corresponding holes (pay attention to the installation direction)
7. The red LED is soldered
8. Solder the yellow LED (with direction), number D7~D12
9. Solder green LED (with direction), number D13~D18
At this point, the welding of plate A is completed.
A board and B board have different installation positions of two components; (install according to the position on the component list)
1. R2 R6 resistors are installed in different positions
2. The installation positions of the red, green and yellow LEDs are different
10. After the welding of the A board and the B board is completed, you can power on and test whether the two boards can light up and flash normally. Boards A and B can flash normally before continuing with the next steps.
11. Solder CTR-30C circuit board, referred to as C board
Solder socket (with direction)
12. Weld 1 button switch (with direction)
13. A board and B board are combined (there are directions, the two boards refer to the positive and negative poles of the bottom plate), after the two positioning arrows are aligned, use a soldering iron to fix the two boards together.
14. Battery box and C board combination
Battery box and C board combination
A. Solder the battery box wires
B. Fix the battery box with screws and nuts
15. The pre-assembled AB board and C board are combined (there is a direction, and the polarity of the power supply must be consistent)
16. Solder the top LED (with direction)
These DIY soldering practice kits with Xmas tree shapes after assembly. There are 3-color RGB LEDs divided into four groups, and each group has different flashing frequencies, when four groups flash together, it looks like a small Christmas tree.
These 3D Xmas tree assemble kits are not only creative gifts, beautiful decorations, but also electronic learning kits, designed to practice beginners’ electronic knowledge and soldering skill, they are perfect for school basic electronic and STEM educational projects.
This DIY learning kits with the Xmas tree shape after assembled, them are not only season gifts and decorations, but also soldering projects, designed for electronic lovers, students and beginners, to practice electronic knowledge and soldering skills.
The length of this DIY Christmas tree is 13.6cm, the width is 6cm and the height is 6cm.