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Price: $29.99 - $20.76
(as of Dec 18, 2024 18:51:11 UTC – Details)
Product Description
Our LED circuit board with an American theme is a creative work that combines patriotism with technology. On the front side, referring to the American flag, the LED lights are arranged to form the pattern of the American flag, accompanied by the words “God Bless America”. On the back side, the letters “USA” and the words “The American Flag Will Never Fall” are prominently presented, and the date of American Independence Day, “July 4, 1776”, is marked on the back as well. The circuit board is made of 1.6-millimeter-thick international standard board material, with tin-plated solder pads, which is both sturdy and has good electrical conductivity. The LED lights possess the characteristics of high brightness and low power consumption, and can emit bright and uniform light. Its application scenarios are quite extensive. When used for home or office decoration, it can create a unique atmosphere, and it is also very attractive in commercial places. Electronics enthusiasts and engineers can also apply it to the development of electronic projects. It has an appropriate size, a large number of components, and its working voltage meets the standards. Undoubtedly, this is a creative product worth having.
1、PCB board size: 68 × 108 mm
2、PCB board thickness: 1.6 mm
3、PCB material: International standard board, all solder pads are tin plated, high-strength material.
4、The working voltage of the circuit is DC 3 – 5V.
5、Number of components: 378
6、Number of solder joints: 756
7、Function/Feature: RGB LED light American flag (S)
8、Sample welding time: Approximately 120 minutes.
This pentagram-shaped breathing light kit is an excellent combination of creativity and practicality. Its unique pentagram appearance catches people’s eyes at first sight, and the green circuit board is full of vitality. The internal breathing light can achieve a soft and gradual change of light, creating a warm and cozy atmosphere.
The circuit board has a just-right size and a thickness of 1.6 millimeters. It is made of international standard board material with tin-plated solder pads. The working voltage of the circuit ranges from DC 4 to 6 volts, which can be compatible with various power supplies. With only 30 components and 67 solder joints, it effectively ensures the stable operation of the breathing light function.
It can be used for holiday decorations such as Christmas and the American Independence Day. It is also very suitable to be placed in bedrooms, living rooms and other places as home decorations to create a peaceful and harmonious environment. For electronics enthusiasts, it is an even better DIY kit. Moreover, we also provide detailed tutorials and after-sales guarantees.
1、PCB board size: 48 × 48 mm
2、PCB board thickness: 1.6 mm
3、Board material: International standard board, all solder pads are tin plated, high-strength material.
4、The working voltage of the circuit is DC 4 – 6V.
5、Number of components: 30
6、Number of solder joints: 67
7、Function/Feature: Green star-shaped breathing LED light
8、Sample welding time: Approximately 15 minutes.
This multifunctional USB indicator light is an impeccable blend of practicality and convenience. At one end, it features a standard USB interface, which makes it effortless to plug into a wide range of devices like computers, laptops, and mobile power supplies. It enjoys remarkable compatibility and can draw power from any 5V USB output power source, with computers being no exception.
Inside, there are three built-in high-brightness LED indicator lights that will light up as soon as they are connected to a USB power supply. The current is roughly 0.12 amperes, and the power consumption amounts to 0.6 watts.
The circuit board of this indicator light is crafted from international standard board materials. It showcases outstanding and stable electrical performance, along with firm solder joints and a well-arranged component layout. All these aspects jointly ensure the product’s reliability and durability.
Both electronics enthusiasts and electrical engineers can take advantage of it for their DIY projects. Moreover, we provide detailed usage instructions as well as comprehensive after-sales support. Truly, it serves as an indispensable assistant in our daily work and life.
1、PCB board size: 32 × 14 mm
2、PCB board thickness: 1.6 mm
3、PCB material: International standard board, all solder pads are tin plated, high-strength material.
4、The working voltage of the circuit is DC 5V.
5、Number of components: 7
6、Number of solder joints: 24
7、Function/Feature: High-brightness portable LED lamp
8、Sample welding time: Approximately 10 minutes.
The circuit uses CD4060 as the oscillation and frequency division control device, and employs 74HC138 for decoding to drive 8 channels of LEDs to light up in sequence. By taking advantage of the charging and discharging characteristics of capacitors, the LEDs on each channel are gradually turned off, dynamically creating a “dripping water” effect.
In the circuit, R1, R2, RP1, C3 and the internal oscillation circuit of CD4060 together form an oscillation circuit. Adjusting RP1 can adjust the oscillation frequency, thus changing the speed of the flowing light. This oscillation signal is sent to IC2 for decoding after being divided by 7 internally. Every time a 7-division signal arrives, a low level appears successively at the Y0 – Y7 terminals, corresponding to lighting up one channel of LED. When 8 7-division signals appear, a high level will appear at the 10-division pin. This level is sent to the enable terminal of IC2 to make IC2 work normally. In the next cycle, a low level will appear at the 10-division pin, IC2 will turn off its output, and all LEDs will be turned off for one cycle, forming the intermittent period of the “dripping water” effect.
The driving circuit for each channel of LED includes a triode, an LED current-limiting resistor, a triode base current-limiting resistor, a triode base capacitor, and a triode base diode. When the low level from IC2 arrives, the triode base capacitor discharges rapidly through the diode, and the voltage across the capacitor drops rapidly to close to 0V. After the low level passes, the diode cuts off. The triode base current-limiting resistor slowly charges the capacitor, and the formed base current makes the triode turn off slowly, so that the LED gradually goes from bright to dark and is finally turned off, thus forming the “dripping water” effect.
1丶Board size: 40 × 70 mm
2丶Board thickness: 1.6 mm
3丶PCB material: International standard board, all solder pads are tin plated, high-strength material.
4丶The working voltage of the circuit is 4 – 6V.
5丶Number of components: 57
6丶Number of solder joints: 166
7丶Function/Feature: Adjustable flashing LED
8丶Sample welding time: Approximately 20 minutes.
This circuit is an automatic control circuit for light-emitting diodes composed of digital integrated circuits CD4060 and 74HC138. Inside the CD4060, it consists of an oscillator and a binary counter with 10 levels of output. Externally, the oscillator can be connected to a crystal oscillator or an RC (resistor-capacitor) component. This control circuit is connected in the RC oscillation mode and is composed of the series connection of R1-R10 and the series connection of C1-C10. The resistance value of the series connection of resistors is the sum of the resistance values of each individual resistor. For capacitors with the same capacitance connected in series, it is equal to the capacitance of a single capacitor divided by the number of capacitors.
After the 104/10 CD4060 oscillation circuit starts oscillating, the counter counts the oscillation signals. Each binary bit of the counter continuously flips as the counting proceeds, thus outputting square wave signals with frequencies ranging from high to low on pin Q4-014. Among them, Q4-010 drives one light-emitting diode each from L9 to L15 respectively, making these 7 light-emitting diodes blink at different frequencies. Q12-Q14 are connected to the input terminal of the integrated circuit 74HC138. The 74HC138 is a 3-to-8-line decoding circuit. At the output terminal, only one bit is at a low level at the same time. As the data at the input terminal changes, Y0-Y7 sequentially become low levels, thus forming a flowing light effect on L1-L8. After the CD4060 overflows in counting, it will reset to 0 and start counting again. In this way, the automatic control of 15 channels of LEDs is achieved.
1丶PCB board size: 59 * 48 mm
2丶PCB board thickness: 1.6 mm
3丶PCB material: International standard board, all solder pads are tin plated, high-strength material.
4丶The PCB board is reasonably designed and uses common surface-mount components.
5丶The working voltage of the circuit is DC 5V.
6丶Number of components: 76
7丶Number of solder joints: 242
8丶Function/Feature: It can automatically control RGB flashing LEDs.
9丶Sample welding time: Approximately 20 minutes.
Product Dimensions : 2 x 2 x 2 inches; 5.93 ounces
Item model number : YIDAB004
Date First Available : February 17, 2023
Manufacturer : Yidab
ASIN : B0BW2TTSWH
5 SETS of SUPER VALUE. From easy to difficult SMD components soldering practice kit, high challenge PCB SMD welding skills competition.
Professional skills, complete this kit, need a certain professional knowledge base, practical training experience.
High quality material, high-quality double-sided spray tin FR-4 circuit board, easy to solder, not easy to oxidize, contribute to success.
Super quantity components: there are many kinds of components, nearly 20 different kinds of electronic components. There are 1255 solder joints and 546 components.
NICE SUPPORT: There are component list, circuit diagram, principle description and finished product diagram. Any problems, please contact us for information.
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Dominick MarcianoDecember 18, 2024
Well Put Together Kit
This is a well put together kit. Each kit is packaged individually with their instructions. The instructions are clear and contain a full, also clear, circuit diagram of the PCB, which is helpful if you want to duplicate the circuit in the future of further practice. It also comes in a cardboard box, which helps prevent shipping damage, as well as a small catalogue of other projects/kits.I do have two small things I think could be improved. First, everything comes in regular plastic bags and I think it would be better to use some ESD bags for further protection.However, my bigger concern/problem is that the instructions were folded up in the same bag as the components. So when taking out the instructions, and unfolding them, be VERY as some parts may be caught in between the folds. This isn’t a problem with the larger tape/real, but some kits have a single part (e.g., resistor/capacitor) and if you are not careful you can easily drop/lose/fling these when opening the instructions.Finally, it seems to have come with some other parts which are not part of any kit. Specifically, it appears to be four boards with 8 large LEDs each, which can be powered from USB-C or by hooking up some wires to the provided pads. There are no cases for them or other information (e.g., voltage requirements, current draw, etc.) so not really sure what they are for and I will need to experiment with them. Still it was a nice addition.I would highly recommend this product to anyone wanting to practice SMD soldering.
DobersDecember 18, 2024
Excellent practice kits, but instructions are lacking
I’m about to embark on some more serious soldering activities on some retro computer equipment that is expensive to replace, but was concerned my soldering skills were insufficient. So I purchased this kit and it is excellent practice – my skills are definitely improving. This nice thing about this kit is that there is an end-result so you know whether you soldered correctly rather than those practice boards that don’t do anything. It’s great feedback, and very satisfying when the LEDs light up as they are supposed to. One thing to note, the components are really really really small so I don’t know how I could complete these without magnifying goggles.The only thing stopping me rating this product a full five stars is that the instructions are poor and so I had to do a lot of googling to find out how to tackle the techniques required. They also provide the exact amount of components, so no spares. If you break or lose a component, you’re out of luck. Finally, I made a mistake on a couple of boards, and it would be nice to learn how to diagnose issues with individual components or the board themselves. I figured out the LEDs pretty quickly, but how to diagnose whether I’d soldered a triode correctly was a lot trickier to find – especially for an electronics novice like myself.In summary, if you’re looking to practice soldering skills and you are okay with doing your own research into how to solder and how to diagnose when something isn’t working, then this is the kit for you.
BrettDecember 18, 2024
A Teaching Moment Thus Far!
I havenât even assembled the kit, but it comes nicely packed with great instructions. More over it made me realize how actually tiny SMD components can be today. I took a microminiature soldering course in the 80s. Nothing compared to the size of stuff these days. At 65 you would think I have given up by now. However, Iâm now on a mission to get this done. This led to me to buying a quality 3x Magnifier stand. The solder station and tools etc. arrive soon!!
Ryan //â¿December 18, 2024
Directions could be more explicit.
Great tech, sound equipment, but telling you what goes where and how to identify each component could be more explicit. Overall a good buy if you know how to identify what you’re working with. And which side is + or –
LarsenDecember 18, 2024
FYI – Not for Beginner without an Instructor or prior knowledge
It’s probably a great kit and very helpful for STEM students in a classroom environment. However, for someone trying to learn a new skill alone in their garage, it’s pretty much useless. The “directions” I’m sure make sense if you have done this before, but not very helpful for someone starting from scratch. I wish I had known that before purchasing.