Light Sensitive Bird

 

A.

 

B. In this circuit, we utilized a(n)...

- Electronic PNP Transistor: a semiconductor device use to amplify and switch electronic signals and power

- 10K Ohm Resistor: resistors reduce current flow and act to lower voltage levels within circuits 

- 1k Ohm Resistor: resistors reduce current flow and act to lower voltage levels within circuits 

- 0.047 uF Ceramic Capacitor: a fixed value capacitor that is constructed of layers of ceramic and metal material acting as an electrode (flow of electrons) 

- 100 uF Electrolytic Capacitor: a polarized capacitor which user an electrolyte to achieve a large capacitance 

- 0.1 uF Cermaic Capacitor: a fixed value capacitor that is constructed of layers of ceramic and metal material acting as an electrode (flow of electrons) 

- LED: (Light Emitting Diode) is a one-way path for electricity, or current flow 

C. How It Works:

In this circuit, we have resistors throughout to control the flow of the current. In the main board, each column under V1, V2, V3, and so on connects to the corresponding battery shown in the photos. We have wires connecting to the Power Trans. Other wires connect to the speaker from the board in order for us to hear the sound of our bird. Other wires connect to the switch from the board in order to turn the bird sounds on and off. Wires also connect to the frequency and volume buttons. Most important, we have wires connecting our board and diode in order to use the light sensitive function of the project. 

D.      Considering this was our first circuit project, we had some misunderstandings in placement and directions in the beginning. When it came to the resistors and capacitors, our first mistake was with the Electrolytic Capacitor in determining which side was the positive end. As a result, we were required to return to the beginning of the Level 1 book to check. We performed this same process with the PNP Transistors in determining which wire was E, B, or C. 

     After dealing with the individual pieces, we moved on to the wires (which we didn't quite know how to connect in the first place. Mr. E was helpful enough to provide us some guidance and actually place the wire within the spring terminal, and not just simply on top). After finishing the twelve connections, we hit the switch and!!!...nothing. We checked our smaller individual pieces, our batteries, our switch. We eventually realized that we were missing the wire connections between our Power Trans and Speaker. Once we fixed this, we hit our switch and successfully made our Light-Sensitive Chirp! We adjusted the frequency, the volume, and the amount of light that was allowed to go through the diode. 

E.

Our Video: https://m.youtube.com/watch?v=jTd7968jaIg

Photos: