Modified 2020-09-11 by Dev Ramesh
Student version (unknown ref duckiesky_high_school_student/electronics-soldering-skill)
Requires:
Hardware -
Soldering irons
Soldering mats
Solder fume extractors
Solder rolls
Solder fluxp
Spare wire
Previous lesson - [Intro to Soldering][#electronics-soldering-introduction]
Knowledge -
Skills -
Modified 2020-09-10 by Peyton Strong
Modified 2020-09-10 by Peyton Strong
NGSS: HS-PS3-3: Students who demonstrate understanding can design, build and refine a device that works within given constraints to convert one form of energy into another form of energy.
ISTE: 1d: Understand the fundamental concepts of technology operations, demonstrate the ability to choose, use and troubleshoot current technologies and are able to transfer their knowledge to explore emerging technologies.
Modified 2020-09-10 by Peyton Strong
By the end of this lesson, students should be able to solder with flux and through-hole solder.
Modified 2020-09-09 by jakerad007
5 min: Intro
50 min: Tips on how to best use soldering iron + Experiment
5 min: Regroup and Discussion
Modified 2020-09-10 by Peyton Strong
Work in pairs, but if possible have one soldering unit for each student. Teacher should create these pairs to cater to each student’s needs.
Modified 2020-09-10 by Peyton Strong
Teacher Materials
Should have a set of student materials for themselves to demonstrate to students.
Modified 2020-04-16 by Garrett Warren
Modified 2020-08-23 by jakerad007
5 minutes
Teacher should demonstrate a successfully executed soldering of wires using flux to create a circuit.
Modified 2020-08-23 by jakerad007
50 minutes
Teacher should discuss and lead discussion on:
Oxidation and how it affects the longevity of solder connections (What are other examples of oxidation? Why then should we try to prevent oxidation?)
Flux, and how applying it to connection points before soldering can make for easier application of solder (“What do you think the soldering experience with flux versus without will be?”)
How different temperatures of the soldering iron can affect how well the solder applies
These topics are very relevant to the construction of the drone, since it is impertive that the soldering is well done and strong, with no oxidation that could mess up a circuit.
PCBs (Printed Circuit Boards) and PCB delamination is also imporant to discuss. Delamination occurs when too much heat is applied to the board, and bubbles and cracks form. That is why you shoudl never keep the soldering iron on a PCB for and extended period of time, as it can ruin the component. Here’s an in-depth video about PCB delamination, but the explaination here is suitable for most classroom needs.
If there’s time through-hole soldering is another form a soldering used on the Pi on the drone. This is simply when a wire is stuck through a previously made hole on a PCB. To complete through hole soldering, tin the wire, stick it through the pre-made hole, and solder the tip of the wire to the metal surrounding the hole.
Student Experimentation
Give the students the tools in the materials section (spare wire, soldering tools, and flux), and ask them to solder wires together with and without flux, while also showing them how to get acclimated to using the various materials. This half hour should be dedicated to students becoming familiar and comfortable with using the soldering iron combined with flux.
To solder with flux, simply follow trhe steps of soldering from the previous lesson, except before tinning the wire, stick the soldering iron into the flux and apply it on the wires. This will make the solder flow easier, but is not always necessary.
Teacher should check student’s soldering joints as the students are working.
Heads up for next lesson: Keep all soldering joints that are weak or problematic, they will be useful in the next lesson.
Modified 2020-08-23 by jakerad007
5 minutes
Teacher should ask the students, on a scale of 1 to 10, how comforable they feel with the tools. If the majority of the class still feels uncomfortable, it might be wise to take half of another class to continue to work on their skills.
Useful Resources and References
Soldering with Flux - https://www.youtube.com/watch?v=3Z8CzB4BYJA