Week 1 - Lab Documentations

After the collection of basic parts and components, I started the Lab:seeting up the breadboard. At first I did not possessed a power jack and I could not power up the breadboard with what I found inside the shop. And then I figured out the way to generate power directly from the 9V battery I had with my Arduino starter kit, and I used multimeters to test if the battery was safe and running efficiently.

And then I followed along with the lab and learning more of the basics of the breadboard. By applying with the 7805 voltage regulator, I tried different versions of the wiring to see the LED status. 

As the figure2 shows above, I marked the resistor that I initially picked up, which is too high that restrict the LED light to turn on. And figure3 I triedthe LEDs in parallel on a breadboard, and the LED legs were also the important factor to consider, since the shorter side of the LED tend to connect with the negativewhile the longer side of the LED tend to connect with the positive, which makes a circuit completed.
And then I started the Lab:Electronics:

Measuring Voltage using multimeters:

Making a LED switched circuit:

Noted that the figure1/2 shows the LED status in different mode(ON!/OFF), I found out that once again, the importance of the LED legs! The anode part which is the postive one of the red LED light should be directly linked to the anode part of the green LED light, and they formed a closed circuit where pushbutton controlling two LEDs. Anf for the figure3/4, noted that I removed an extra blue corewire and I think the the circuit was still completed, and
the LED lights were still performing well. 

Figure 3/4 above shows that the bottoms/switches were actually controlling one LED light, and they all need to be push down to trigger the light.

Above figures were the steps that I am trying to generatikng a variable voltage with a Potentiometer.