25w21 Continued Learning Analog Signal with Arduino

We continue learning Analog Input with Arduino, which is the focus of LP2519: Analog Input, 25w19, it seems not so easy for the students to understand the analog signal and Analog-Digital-Conversion, yet, the resulted ranged integer is easy to understand, and it's in practice not hard to use. Some students try different way to solve the problems we list in the project requirement, it's fun to see some creative ideas around in the classroom! And it's interesting to see some students like doing coding more, while some like making the HW wiring and fixing some physical issues. Very satisfying learning results overall!