Connecting copper tape (by soldering)
A way to connect components in the circuit is by soldering. Here we connect two pieces of metal by melting a third metal into the joint as a “conductive glue.”
To solder a connection, you will need the following materials:
Start by holding the soldering iron as shown in the picture above. On some irons, you can keep track of the temperature with the display on the machine.
First, tape one copper piece over the other piece normally (no need to fold the tip back).
Melt a puddle of solder onto both pieces of tape and merge the puddles together. This makes a very strong connection by effectively merging the two pieces of copper into one metal.
Adding the LED (by soldering)
Start out by melting a puddle of solder on one end of the copper tape.
Then, use the tweezer to place the LED while melting the puddle of solder with the soldering iron onto one side of the LED. Remember to orient the LED so that the +/- ends of the LED are connected to the +/- terminal of the battery.
Repeat the process of melting the solder to connect the other end of the LED.
Finally, this is what a soldered LED connection looks like:
- Use the side of the soldering iron rather than the tip, as this gives a greater surface area to heat the copper tape and solder.
How to solder an LED?
Debugging: How to desolder an LED?
To remove a soldered LED, alternate heating either side of the LED while lightly pulling the LED up with a tweezer. Here is a video on how to desolder an LED: