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Building Skill

Modified 5 days ago by Dev Ramesh

Student version

Requires:

Hardware -

  • Soldering irons

  • Soldering mats

  • Solder fume extractors

  • Solder rolls

  • Solder fluxp

  • Spare wire

Previous lesson - [Intro to Soldering][#electronics-soldering-introduction]

Knowledge -

  • Understanding the principles of effective soldering

Skills -

  • Being able to through-hole solder succesfully

Building Skill with Soldering

Modified 5 days ago by Peyton Strong

STANDARDS: Next Generation Science Standards (NGSS) and International Society for Technology in Education (ISTE)

Modified 5 days ago 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.

Assessments and Evidence of Understanding

Modified 5 days ago by Peyton Strong

By the end of this lesson, students should be able to solder with flux and through-hole solder.

AGENDA (Brief Summary of Activities)

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

Differentiation (strategies for grouping, ELL, and inclusion)

Modified 5 days ago 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.

Advanced preparation/Materials/Set Up (Including Misconceptions)

Modified 5 days ago by Peyton Strong

Teacher Materials

Should have a set of student materials for themselves to demonstrate to students.

SCRIPT OF TEACHING AND LEARNING ACTIVITIES

Modified 2020-04-16 by Garrett Warren

Introducing The Lesson

Modified 2020-08-23 by jakerad007

Teacher should demonstrate a successfully executed soldering of wires using flux to create a circuit.

Main Lesson

Modified 2020-08-23 by jakerad007

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.

Ending The Lesson

Modified 2020-08-23 by jakerad007

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

Glossary