Reflection
This week I learned some fundamental knowledge about circuit. These are the circuits I built in recitation.
1.
2.
3.(For this circuit, I leave the switch closed in order to take the video that shows the change of the brightness of the light.)
Actually, I learned some basic knowledge about this during high school so I didn’t have much difficulty building this according to the graph. I accidentally got this short circuited once but I quickly figured this out. The reason for this short circuit is that I put two legs of LED in one row so the resistor quickly got very hot.
I think I know how each component works but I am actually not very sure about the function of the capacitor here. I guess it is put here to reduce interference and stabilize current but I’m not sure.
The diagram of how it works
I draw a diagram for the first circuit.
Question 1
I think these circuits mainly use button to interact.The user can press the button to make the buzzer beep or light up LED. Especially, in the 3rd circuit, we use MOV to control the brightness of the lamp, this is also a kind of interaction.
Question 2
- Without high-tech computer controller, I think I can build some simple things only by circuit such as automatic light using photosensitive resistor or voice control device using microphone.
- Combining with computer, I think I can totally create a 3D scene by computer and using hardware to capture the movement of the user to let them “move” and explore this 3D scene. This is somewhat like visual reality nowadays. Of course the output from computer will not be limited to simple visual effect, it also can be some sound, vibration and even smells.