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I created my first circuit with a microcontroller, an stm32f446 in lqfp64 package. However I have soldered such tiny parts and I'm struggling a bit and already destroyed one of three chips I bought.

Is there any kind of training kit? I do not want to spend each time 10 bucks for training purposes.

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  • \$\begingroup\$ Yes there are. Have you searched for them? \$\endgroup\$
    – Justme
    Jan 11, 2021 at 18:53
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    \$\begingroup\$ Buy the cheapest IC and SMD parts on ebay you can find, and pratice with them. It doesn't matter what they do. You can also buy some SMD to pin header boards for cheap to practice solder on. \$\endgroup\$
    – Linkyyy
    Jan 11, 2021 at 19:11
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    \$\begingroup\$ Get an old motherboard and practice taking chips off and then putting them back on. \$\endgroup\$ Jan 11, 2021 at 19:22
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    \$\begingroup\$ Motherboards are hard to start with due to the copper planes (they take a lot of heat before you can desolder from them). But for other electronics (2~4 layers), starting with "trash" it is a good recommendation. \$\endgroup\$
    – Wesley Lee
    Jan 11, 2021 at 19:35
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    \$\begingroup\$ I wrote down some QFP soldering advise here: electronics.stackexchange.com/a/502238/6102 \$\endgroup\$
    – Lundin
    Jan 15, 2021 at 13:43

2 Answers 2

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Buy the cheapest IC and SMD parts you can find on ebay, and pratice with them. It doesn't matter what they do. You can also buy some SMD to DIP boards for cheap, that matches the IC package, to practice solder on.

Adapter boards

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    \$\begingroup\$ Well, perhaps not Ebay... if you get old parts with lots of oxide, they aren't gonna be very fun to solder even with generous amounts of flux. \$\endgroup\$
    – Lundin
    Jan 13, 2021 at 15:38
  • \$\begingroup\$ Clean with pencil eraser. \$\endgroup\$
    – user263983
    Jan 16, 2021 at 20:11
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I used this for myself to get the hang of it. There's ton of SMT resistors and small chips and took me awhile to get it done. Here 1

Also consider you might want to re flow solder your final project.

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