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Basic Electronics: Surface Mount Components Kit – 555 Roulette

Basic Electronics: Surface Mount Components Kit - 555 Roulette



A simple kit, but quite difficult to assemble because of the very tiny surface mount components.

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This one shows SMD components:

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Tags: smd components

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33 Comments

  1. Date: September 26, 2015 at 17:04
    Author: Micha? Go?u?ski

    That's an awful way of soldering SMD. You should probably take a look at EEVblog SMD soldering instruction, guy made it as easy for me as it can be.

  2. Date: October 20, 2015 at 16:39
    Author: Laziter73

    Tip: When mounting SMD ICs, attach one pin, then use a strip of solder across all the pins and drag the soldering iron from one end to the other. It's faster and doesn't end up with using too much solder. The initial attach point needs to get re-soldered using some flux.

  3. Date: December 1, 2015 at 15:56
    Author: Gus Wilkens

    You made that look difficult. You should try using some solder paste, cheap ebay stuff is fine. Just add small amounts to the pads, use tweezers to place the components into position and use a heat gun/blower attachment to melt the solder evenly on all pins. It will line up your components perfectly.

  4. Date: January 26, 2016 at 17:16
    Author: Mike Schurai

    Für das Löten eine 6 – . Man kann sich doch etwas mehr Mühe geben wenn man das schon als Video macht. Das kann jeder Grundschüler besser.

  5. Date: March 5, 2016 at 02:27
    Author: Link Smith

    Surface mount parts can be a pain. I have a microscope where I work to see and touch up joints made by a machine. It's not super powerful, it's markings are 1X-4X but I suspect that's in multiples of ten. Also a stupidly thin soldering iron tip helps too, less you bridge half your connections together. With good lead solder, flux is hardly necessary, although all my parts come pre-tinned so that obviously helps.

    Also, you can try using some glue, fast drying super glue works, to tack the components in place, saves you the headache of the components sticking to your soldering iron.

    Finally, a pair of ESD safe tweezers can be a life saver.

    The business where I work uses a wave solder machine that is probably older then I am (born in 91) with surface mount ICs on the bottom of the board. It constantly bridges connections and misses others. I have plenty of work to do.

  6. Date: April 10, 2016 at 09:03
    Author: Ray Kent

    Left-field tip for the bigger chips: sandwich the chip and board between two tiny neodymium magnets, slide it into position. There should be enough friction to do the job.

  7. Date: April 13, 2016 at 19:51
    Author: Julian Nicholls

    Having just built a DSO138 with a dozen or more SMD resistors and a couple of larger SMD parts, it's heartening to see that I made at least as good a job of the resistors as Julian I..

  8. Date: April 30, 2016 at 12:25
    Author: slicedpage

    Another helpful tut that I am so grateful for, thank you. I know I screwed up but not sure where. One led comes on,does not flicker when button is pushed just stays on while the remaining 9 stay off. Can you suggest where my mistake was ?

  9. Date: May 17, 2016 at 19:42
    Author: Penfold8

    You could always use ESD tweezers to hold the component down while you get it in straight.  Also, flux works wonders with SMD components.

  10. Date: May 21, 2016 at 04:33
    Author: Alex Tworkowski

    You know you can just twist the wires together on the thru mounts. You'll be clipping them anyway. Much easier.

  11. Date: June 25, 2016 at 21:24
    Author: Martin Counsell

    I have found with many of these kits is a very thin layer of solder on the pcb, so just place and hold down the the component and heat up each lead with the solder tip.

  12. Date: October 5, 2016 at 18:54
    Author: PunakiviAddikti

    For future SMD soldering jobs I would recommend using the tweezers to hold the component by the sides. That also applies to ICs when soldering one pin down first. Tinning one pad and reflowing it to attach one side of the component is the right way to do it when hand-soldering. For ICs with more pins (they're usually the same package but the pins are closer together) you can drag the iron across all the pins (after sticking it down with one pin first) and add solder at a constant amount while you drag. If you see bridges, drag again starting from the bridge and moving across the other pins. Do not drag outwards or the bridge will remain. You can also use a desoldering pump on the bridges, or a slight touch with solder wick. It usually retracts just the right amount to make a perfect solder joint but also removes all bridges if they're on the same side. These are just helpful tips, like with through-hole soldering you will develop your own custom technique that feels good for you. Also, regarding the LEDs, Chinese people have a bad habit of putting the flat side and the short leg on the positive side. They're not rejects, they're just cheap Chinese LEDs that they have designed themselves. It's annoying but true, I also have those kind of LEDs.

  13. Date: November 10, 2016 at 04:07
    Author: Ron Thompson

    I got the same kit,just like you ,I thought I was getting full size parts,I lost my he555 chip so I had to order some more,after watching your video,I seeing how hard this is going to be for me,I ordered a new soldering pencil with a very fine pointy tip,I will need all the help I can get,you seem to no what you are doing.,great video ,thanks

  14. Date: November 27, 2016 at 05:17
    Author: Ron Thompson

    I did the same as you did ,I thought I was getting,the kit with the normal size components,my first kit with smd chip on it flew across the room,I order another batch of the ne555 chip,then when I went to solder my chip on,one of the little pad disapered,not to be out done,I ordered another kit,now I am watching your video ,and hope I don't screw this one up,I also oreded a regular size kit.this kit is not for beginners,I read up on it and it said for experts.if

  15. Date: December 21, 2016 at 03:18
    Author: Ron Thompson

    Julian or anyone ,how is lead free marked and how is leaded,solder marked my new roll is marked63/37 I assume that the among of lead and tin,I hope I bought leaded solder,I no some of the Chinese brands don't work as well as my old roll of Lester solder I trying to find the best brand of leaded solder

  16. Date: January 9, 2017 at 05:21
    Author: WeirdScience06

    I don't know how you have the patience to do this, I'd drop everything and it would disappear into the carpet forever

  17. Date: January 19, 2017 at 12:58
    Author: Kevin Miedema

    get some fine tweezers lol, doing it like this is absolute madness!

  18. Date: February 9, 2017 at 22:02
    Author: Bruce Woods

    I don't know why you didn't use tweeters to hold your components in place for soldering

  19. Date: February 9, 2017 at 22:04
    Author: Bruce Woods

    Don't you just love auto correct. That should be "Tweezers" not "Tweeters"

  20. Date: February 11, 2017 at 05:26
    Author: lysippus

    I started laughing at "MELF", and then again at that "tombstone", then you rolled on that round diode!

  21. Date: March 7, 2017 at 22:05

    if you look closely at the silk screen print on the board you can make out the led symbol ! so you know exactly how the leds are fitted !

  22. Date: April 26, 2017 at 13:54
    Author: andygozzo72

    i did a part surface mount kit a few months back and i brushed a tiny bit of solder pate on the pads, held the component on with a cocktail stick like you, and just touched each pad with a 1mm tip….seemed to go ok as long as you get the right amount of paste..

  23. Date: April 26, 2017 at 13:57
    Author: andygozzo72

    the plastic on the casing isnt necessarily the wrong way round, i've had leds in all combinations of leg length and flat polarity indications!

  24. Date: May 26, 2017 at 06:05
    Author: John Lee

    you may find it easier to tin to surface pads first, dab some flux then place the components after with tweezer. Touch one end of the component and watch the solder melt around one end of the component, then repeat on other side.

  25. Date: August 5, 2017 at 18:41
    Author: Lucas Falcon

    MELF-UYPLJI : "Most End up Lying on the Floor – Unless You're a Pro Like Julian Ilett"

  26. Date: August 18, 2017 at 00:43
    Author: bestamerica

    '
    very small tiny chips / electronic parts on the board is a so hard for me…
    cannot do that

  27. Date: September 6, 2017 at 22:34
    Author: Readme .txt

    DIY kit with smd components? The seller was clearly a fraud. Humans are not robots. It was fun to watch.

  28. Date: October 28, 2017 at 16:25
    Author: mouly jeanlouis

    Julian He And !!! But not a good welder of components it is a fortravers that fortunately it does not weld resistances of a half mm !!!

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