Review on 🔥 Gikfun Soldering Training Practice for Welding by Corey Greene

Media could not be loaded. DESCRIPTION: The description is a bit missing, so I'll try to clear up some confusion. This is a beginner SMD soldering kit designed for practice. It contains two "sections" on the front of the board: exercise and LED circuit. On the back are several rulers in standard and metric scales, a gauge gauge and standard SMD pad templates for reference. Blackboard. These rows consist of pads for four different sizes of SMD parts: 1206, 0805, 0603, and 0402 (google "SMD sizes" to find out what those numbers mean if you don't already know). The kit includes resistors and capacitors to solder to these rows and I believe the values are random. These rows are not electrically connected to the LED circuitry, so it's okay if you make a mistake or lose components. They even include a few extra resistors of each type, which was good because I managed to lose a few 0402 resistors when they slipped out of my tweezers. These things are SMALL. The second section is the actual LED circuit, located in the middle of the panel between the two sets of training rows. It consists of a 4017 decade counter driving a red LED ring. The LEDs light up one by one and chase in circles. The four blue LEDs at the corners of the center section flash together once per revolution (half on, half off). The 555 timer pulses to control the counter and also lights the red LED in the center of the circle with each beat. The circuit contains several SOT23 transistors and DO diodes. Both chips are SOIC packages. The speed and brightness of the LEDs depends on the input voltage you supply. ASSEMBLY: I don't think I could have done this without a good pair of tweezers, some sort of hands-free magnification (love my Brightech - LightView PRO SuperBright 56 LED Lamp Magnifier - Adjustable Swing Arm - 5 diopter 5 inch lens - space-saving clip - white) and a thin-tipped soldering iron. Having the right tools for the job is a huge advantage. My instructions were in English, but not as clear as I would have liked. First, I divided all the components into two groups, one for each section (training parts and the "real" LED circuit). The component ratings for the LED circuit are specified in the instructions. All of them should be pretty obvious because most of them are few and far between. The only thing that was confusing was the 330 ohm resistive strip. Make sure you put the resistive strip labeled "331" in the Lay LED circuit stack. Details of the LED circuit you should leave with 6 resistive strips or capacitors. These remaining strips should contain about 14 components for 1206 and 0805 and about 16 for 0603 and 0402. Start with these and practice your technique. It's probably easiest to start with larger components and work your way up to smaller ones. Search the web for SMD soldering guides if you need them. Once the practice series are complete, you should be ready for the main round. The hardest part is the polarity of the diodes. Use the illustration in the instructions and note that the LED polarity symbol is on the bottom of the part. For integrated circuits, solder one corner first and then the opposite corner to secure the part. Then solder the remaining pins. If you accidentally connect two pins, use a solder wick to wipe off excess solder. The wick doesn't pull solder between the IC and the board, so you can make a really clean connection this way. plus and minus poles on the underside of the circuit board). Then turn on the power! I used a couple of alligator clips and a 9v battery (I think 3 to 12v is recommended). This was my first SMD project and once I figured it out, you probably can too. If you have any questions please leave a comment and I will do my best to answer you quickly. Have fun!