https://www.engineertools-jp.com/category/soldering
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Kennsla:
https://www.learnabout-electronics.org/
https://www.ultralibrarian.com
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Teikniforrit fyrir raflagnir:
https://www.kicad.org/download/
https://www.digikey.com/en/resources/design-tools/kicad
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Standur fyrir PEAK mæla: