Code Link:
https://github.com/lonussss/Intro-to-IM/blob/25ad7a56cd164118742c7f7bec29d9868ff476be/unusual_switch.ino
Concept:
This idea is distantly inspired by how cars warn you when your seatbelt is not attached. I was inspired by the concept of leds lighting up or not lighting up based on humans interactions with chairs.
How I proceeded was adapting the code and circuit from the in-class example to fit my needs. I replaced the switch with 2 wires attached to 2 pieces of tin-foil, one attached to my chair, and one attached to my shirt.
The LED lights up when i lean back on my chair, and turns off when I’m not leaning back on my chair.
Code Highlights:
The code that controls the output pretty much is the same as the in-class exercise, where when the circuit is connected, the led lights up, and when it is closed, the led dims.
int buttonState = digitalRead(A2);
if (buttonState == HIGH) {
digitalWrite(13, HIGH);
} else {
digitalWrite(13, LOW);
Improvements:
Currently, I’m using 2 pieces of tin foil loosely attached to my shirt and to my chair, for the future, something like this could be implemented with a pressure sensor of sorts, where it can determine how much pressure I am applying on the chair, which could affect the brightness of the LED. This would not only be better in terms of not needing conductive material but it also increases functionality.