3D Christmas Tree Kit with 3 Colors Flashing LED Light for Soldering Practice Fun Gift

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DIY Kit 3D Christmas Tree Kit with 3 Colors Red/Green/Yellow Flashing LED for Electronics Soldering Practice Xmas Fun Gift DC 5V

$3.90

~~$7.79~~50%

Quantity	5+	10+	20+	30+	50+
Price	$5.30	$5.10	$4.80	$4.50	$4.20

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Item ID: 7212

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Reviewed by ICStation's Customer djquaky:

Product Details

1. Introduction

CTR-30 flash Christmas tree kit consists of three circuit board, allows 36 LED flash alternately,showing a Christmas tree in the space of three-dimensional profile (the night environment has better viewing).

2. Parameter

NO.	Parameter	Value
1	Model	CTR-30C
2	Work Voltage	DC4.5-5V
3	Power Type	AA*3 battery or USB Cable
4	Installation Size	60mm136mm60mm

Advantages:

This circuit is simple and practical, low power consumption. It used integrated circuits for driving: fewer parts, and the line is simple 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.

3. Connection Diagram:

4. Component Listing

NO.	Component Name	PCB Marker	Parameter	QTY
CTR-30A
1	Metal Film Resistor	R6	330ohm	1
2	Metal Film Resistor	R4	1K	1
3	Metal Film Resistor	R2	2K	1
4	Metal Film Resistor	R1,R3,R5,R7	10K	4
5	Electrolytic Capacitor	C1-C3	47uF 16V	3
6	Red LED	D1-D6,D19	3mm	7
7	Yellow LED	D7-D12	3mm	6
8	Green LED	D13-D18	3mm	6
9	S9014 Transistor	Q1-Q3	TO-92	3
10	PCB	CTR-30A		1
CTR-30B
11	Metal Film Resistor	R6	1K	1
12	Metal Film Resistor	R4	2K	1
13	Metal Film Resistor	R2	330ohm	1
14	Metal Film Resistor	R1,R3,R5	10K	3
15	Electrolytic Capacitor	C1-C3	47uF 16V	3
16	Green	D1-D6	3mm	6
17	Yellow	D7-D12	3mm	6
18	Red	D13-D18	3mm	6
19	S9014 Transistor	Q1-Q3	TO-92	3
20	PCB	CTR-30B		1
CTR-30C
21	Self-Locking Switch	S1	5.8mm	1
22	DC Power Socket	J1	3.5mm	1
23	Battery Box		AA*3	1
24	USB to DC 3.5mm Cable		80cm	1
25	Screw		M2*8mm	2
26	Nut		M2	2
27	PCB	CTR-30C		1

NOTE: Users can complete the installation by PCB silk screen and component listing;

Battery is not included in this package.

5. Component Description

1>. 1pcs 330ohm Metal Film Resistor

2>. 1pcs 1K Metal Film Resistor

3>. 1pcs 2K Metal Film Resistor

4>. 4pcs 10K Metal Film Resistor

5>. 3pcs 47uF 16V Electrolytic Capacitor

6>. 7pcs 3mm Red LED

7>. 6pcs 3mm Yellow LED

8>. 6pcs 3mm Green LED

9>. 3pcs S9014 Transistor

10>. 1pcs PCB CTR-30A

11>. 1pcs 330ohm Metal Film Resistor

12>. 1pcs 1K Metal Film Resistor

13>. 1pcs 2K Metal Film Resistor

14>. 3pcs 10K Metal Film Resistor

15>. 3pcs 47uF 16V Electrolytic Capacitor

16>. 6pcs 3mm Green LED

17>. 6pcs 3mm Yellow LED

18>. 6pcs 3mm Red LED

19>. 3pcs S9014 Transistor

20>. 1pcs PCB CTR-30B

21>. 1pcs Self-Locking Switch

22>. 1pcs 3.5mm DC Power Socket

23>. 1pcs AA*3 Battery Box

24>. 1pcs USB to DC 3.5mm Cable

25>. 2pcs Screw M2*8mm

26>. 2pcs Nut M2

27>. 1pcs PCB CTR-30C

6. Download the Installation Steps Here!

Completed Project Below:

I. Tested by ICStation:

II. Tested by ICStation's Outstanding Partner DrakerDG:

Learn More Details in the Video:
(The language in the video is English)

III. Tested by ICStation's Outstanding Partner Berred:

Customer Reviews (2)

View More write

By John Smith2020-12-13 08:10:39

To follow up on my previous comment, R2 and R6 on. CTR-30B should be swapped. R6 should be a 2K ohm resistor and R2 should be the 330 ohm resistor.
By John Smith2020-12-13 07:44:46

This is a fun little holiday project for someone with average soldering skills. It will take a little longer than you expect, but the result is good. One issue I'm having is that the green LEDs on CTR-30B are very faint compared to CTR-30A. I cannot figure out why this is, but when I check the video associated with this product, it looks like the same green LEDs are faint in the video as well. For that reason, I believe there might be an issue with the circuit. Perhaps the resistor values are incorrect. That said, the project still came out well.