J’s tudio    File   Blog   Contact
       
Lab: Digital Input and Output
Sep 8, 2025






Lab: Tone output
Sep 20, 2025









In this lab, I learned how to create Notes in Arduino which I didn’t experienced before. 
At first, I use soldering machine to connect wires with my speaker. Then, I use 3.3v for the power-in, but the number on multimeter was not my expectations. Somehow, I got the expect number, near 5V on multimeter, when I use the VIN pin for power-in.



Lab: Servo motor control
Sep 20, 2025



In this Lab, I learned how to use Force Sensitive Resistor (FSR) to trigger the servo.
Based on last week class, it’s necessary to make sure the original map range is same as the range from serial monitor.

On the first video, I test the output of FSR on serial monitor, then I got the data from the range of near 0-980. Then I applied this range to the map in my code, and the result went well. But here is one question: When I press slightly and keep hold this FSR, the servo would spin back and forth, WHY?

Still figuring out the creative part...