Electronics (soldering)

Field & Cluster
Engineering Manufacturing
Equipment/Materials Needed

Soldering equipment
Two Leads
330-ohm Resistor

soldering iron

Learning how to solder with proper soldering techniques is a fundamental skill every maker will need to master.

Badge Completion Requirements


Learning how to solder with proper soldering techniques is a fundamental skill every maker will need to master.

This basic outline will help to learn to solder understanding the basics of soldering irons, soldering stations, types of solder, desoldering and safety tips. Whether you’re building a robot or working with Arduino, knowing how to solder will come in handy.

A soldering iron is a hand tool that plugs into a standard 120v AC outlet and heats up in order to melt solder around electrical connections. This is one of the most important tools used in soldering and it can come in a few variations such as pen or gun form. 

For beginners, it’s recommended that you use the pen style soldering iron in the 15W to 30W range. Most soldering irons have interchangeable tips that can be used for different soldering applications. Be very cautious when using any type of soldering iron because it can heat up to 896′ F which is extremely hot.


Using a sponge will help to keep the soldering iron tip clean by removing the oxidation that forms. Tips with oxidation will tend to turn black and not accept solder as it did when it was new. You could use a conventional wet sponge but this tends to shorten the lifespan of the tip due to expansion and contraction. Also, a wet sponge will drop the temperature of the tip temporarily when wiped. A better alternative is to use a brass sponge.


Solder is a metal alloy material that is melted to create a permanent bond between electrical parts. It comes in both lead and lead-free variations with diameters of .032″ and .062″ being the most common. Inside the solder, core is a material known as flux which helps improve electrical contact and its mechanical strength.

For electronics soldering, the most commonly used type is lead-free rosin core. This type of solder is usually made up of a Tin/Copper alloy. You can also use leaded 60/40 (60% tin, 40% lead) rosin core solder but it’s becoming less popular due to health concerns. If you do use lead solder, make sure you have proper ventilation and that you wash your hands after use.




Review the supplies require to solder

Explain how to solder to wires together

Discuss the method of desoldering 

As part of the demonstration please include a video of you soldering two wires together

Also include soldering an LED to a 330-ohm resistor, then develop a circuit with a 9-volt battery (don't solder the resistor and LED to the 9-volt battery) 

Please develop and submit a presentation demonstrating your understanding and skill at soldering. Please include the above "prompts" in your presentation