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WK7
10/24-10/30
Lab 1: Intro to Asynchronous Serial Communications
Followed the instructions given. Got the correct output successfully.
The Arduino crashed 3 times during this lab, so it took me a lot of time to figure out the serial monitor cuz it always stop generating data.
For the rest of LABs: please use the following link.
https://www.notion.so/pcomp-blog-412054bf7e4649dbba25089218b2f6d3?pvs=4
The serial plotter has more instant response than the serial monitor so I use it to check the availability of two potenitalmeters.
WK6
10/17-10/23
video link:
https://drive.google.com/file/d/1ZGLpBU1t--g9iRGEPuWvto8JVDdJkh2y/view?usp=share_link
WK5
10/3-10/9
10/10-10/16
Lab 1: Using a Transistor to Control High Current Loads with an Arduino
Unfortunately, I attempted this lab three times, and it still did not work.I suspect the issue lies
with the transistor because all the TIP120 transistors were already taken out. So, I asked the
shop staffs, and they provided me with a TIP102.
Lab 2: DC Motor Control Using an H-Bridge
The second lab was more successful. I connected the motor to the motor driver, but it took a while to secure the driver to the breadboard. I tried using the pins, but they were much looser than I expected, so I just plugged the wires directly into the driver. As a result, every time I pressed the button, the motor started to rotate in one direction.
After setting up this lab, I proceeded with the L9110H H-Bridge Motor Driver. While following the steps in Figure 23, I noticed an incorrect drawing of the wire that should be connected to the down-right pin (positive) of the switch. I corrected this error, and it worked well. When I pressed the button, the motor changed its direction.
Question: I wanted to try with a servo, but I couldn't figure out where the third wire should be connected.
Midterm project:
Me and Yian were working on the mechanism of the triggers.
Left: microphone sensor.
Right: hall-effect (magnetic) sensor.
3D printed some objects (vases, candle, figure).
WK4
09/26-10/02
Some ideas for the midterm project:
A table with candles and offerings, the user needs to place the offerings on the table in the right position, each position will trigger its red light when placed correctly, and the wrong position will turn into a yellow light that will not allow them to continue. When all the red lights are triggered, the user blows out the candles which contain air pressure sensors, and then the puppet(automata) starts to be driven by servo servos, with scary music or light effects.
WK3
09/19-09/25
LAB 1
Tone Output Using An Arduino
- Check whether the speaker is working or not.
- The input range is 100-700.
- The frequency changes as I put frequency = map(sensorReading, 100, 700, 100, 1000);
and as I change 1000 to 1400, it produces a higher pitch as its frequency changes.
-Check the input range after adding a sensor, which is 0-600, and then change its frequency by giving pressure to the surface.
- Use the note constants to make a simple keyboard. Learned how to create a new tab for the notes' source.
Lab 2
Servo Motor Control with an Arduino
- The range of the servo is 0-1023.
- Follow the instructions and let the servo rotate successfully.
WK2
09/12-09/18
I began with Lab 1, and it took me almost an hour to set up the Arduino IDE and the breadboard. I was quite anxious about the connections of each component, as I had previously encountered numerous bugs and problems in my previous labs.
Fortunately, the yellow LED poped up after I uploaded the code to the system. However, a big issue just came quickly, that is, when I was pressing the button, nothing changed.
Then I started to switch the two LEDs and also changed the definition of the coding to check if those all worked. It seemed like they all worked well. So I tried to remove the 10k resistor, and both LEDs turned on. As I pressed the button, the red LED turned off and the yellow LED became brighter. Later, I replaced the switch with a sensor and had some fun experimenting with it. But I am now still confused with this lab as I don't know what went wrong.
*update: reinstalled the whole breadboard, it worked!
Lab 2 went more successfully. I connected a speaker to the breadboard and the results turned really well. The LED gave a hint for the changing tone or volume of the speaker. Shown as the video.
For Lab 3, I got the result from serial monitor but I am still trying to figure out the output of serial plotter.
WK1
09/5-09/11
This week, we had an overview of different electrical components and we did several labs for set-ups. As we dived headfirst into labs and hands-on experiments, I realized that there were a lot of issues going on. One of the most common challenges when setting up a breadboard for me is correctly placing components and ensuring they are properly connected. Different from my previous experiences in physics class, where I primarily used only wires to establish connections, breadboards introduce a different level of “complexity”, where part of the circuits are hidden behind the rectangular columns. So that’s a bit challenging for me to go through all the connections. But hopefully I can get more used to it as I practice more and it is essential to understand the breadboard's underlying structure, including how the rows and columns are interconnected, to successfully navigate its concealed circuits.
Used the white LED but it did not work.
