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Our first assignment of the year was to assemble a circuit with 8 LEDs and 8 switches. These switches allowed us, once fully assembled, to turn on each individual LED and examine the effect of the different surface mount resistors connected to each individual LED. On 08/26/24, we tested our skills with the multimeters by testing the resistance of the small surface mount resistors. It took some time and careful placement of the probes, but we were able to get an accurate reading of the resistance of each. Below is the process of assembly for the circuit.
These are all of the materials we were given. 8 LEDs, 1 switchboard, 1 PCB board, 4 screws, and 4 posts. We did not use the screws or posts.
This is the front of the board with all of the LEDs added. We inserted the LEDs into the board with the longer leg, the anode, in the positive side, and the shorter leg, the cathode, into the negative side. Normally, the positive side is the cathode and the negative side is the anode, but for LEDs it is the opposite.
This is the back of the board after soldering.
This is the back of the board after trimming the wires.
This is the circuit after being given a power source. All LEDs are turned on by the switches in this picture, except the 1st.
IMG_1561.MOVThis is a video of the circuit running, and the different switches being turned on and off.
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