<h1 id="soldering-workshop">Soldering Workshop</h1> <hr/> Nils Olsson -- # Soldering? Joining two pieces of metal together by melting and putting a filler metal with a lower melting point (solder) into the joint. <!-- .element: class="fragment" --> - Jewelry <!-- .element: class="fragment" --> - Plumbing <!-- .element: class="fragment" --> - Electronics (joining components to create a circuit <!-- .element: class="fragment" --> --- # Materials - Soldering iron - Solder - Flux - Accessories -- ## Soldering iron - Fixed temperature/veriable temperature - Electric/butane -- ## Solder Filler metal with low melting point (lower than the melting point of the metal being joined). Different alloys have different properties. - 60/40 (60% tin, 39-40% lead) - Lead free --  <!-- .element: style="height:90vh;" --> -- ## Flux Removes oxidation, improves heat transfer, improves solder flow. Most consumer solder have a rosin flux core. --  <!-- .element: style="height:90vh;" --> -- ## Accessories - Fume extractor - Stand (provided 100% of the time, in some form) - Tip cleaner (sponge/metal wool) - Helping hands - Other soldering iron tips (conical, screwdriver, chisel) --- # Technique -- ## Safety - Don't touch the iron! (you *will* burn yourself eventually) - Soldering fumes - Fume extractor - Wash your hands after! -- ## Soldering - Tinning the tip - Heating both elements - Melting the solder (wetting) - Taking the right amount of time - Not enough time/heat and you get a bad joint - Too much heat and you damage the components - Cleaning the tip - Cleaning flux -- ## Good and bad solder joints  [common soldering problems](https://learn.adafruit.com/adafruit-guide-excellent-soldering/common-problems) -- ## De-soldering - De-soldering wick (a.k.a. solder wick) - De-soldering gun --- # Today's project -- ## Jumbo LED flasher  <!-- .element: class="fragment fade-out center" data-fragment-index="1" --> - 1 battery connector <!-- .element: class="fragment" data-fragment-index="1" --> - 2 transistors <!-- .element: class="fragment" data-fragment-index="1" --> - 2 potentiometers <!-- .element: class="fragment" data-fragment-index="1" --> - 2 capacitors <!-- .element: class="fragment" data-fragment-index="1" --> - 2 huge LEDS <!-- .element: class="fragment" data-fragment-index="1" --> - 4 resistors <!-- .element: class="fragment" data-fragment-index="1" --> Total: 16 leads to solder <!-- .element: class="fragment" data-fragment-index="1" --> -- ## Good luck! - Apply heat for the right about of time - Be careful with the orientation of capacitors and LEDs