Overview

We will be combining our fish mouths with the Arduino to create a robotic fish for this activity!

Part 1: Materials

In addition to your Arduino materials and fish mouth, you will need:

1. Hot glue gun
2. Cutting Mat
3. Servo Motor
4. Jumper Wires
5. Floral Wire
6. Pencil/pen

PIR sensors (or passive infrared sensors) are motion sensors that measure subtle changes in infrared light in the room and register that change as movement. The processing is done on the chip and it outputs a current based on whether or not it detects motion.

int pin = 2;

void setup(){
  pinMode(pin, INPUT);

  pinMode(13, OUTPUT);
}

void loop(){
  int pirVal = digitalRead(pin);

  if (pirVal == 0) {
    digitalWrite(13, HIGH);
  } else {
    digitalWrite(13, LOW);
  }

  delay(100);
}

Infrared distance sensors are sensors that measure how far away an object is by shooting infrared light at the object and measuring how much light is reflected back. They output an analog current which can be read by the Arduino.

void setup() {
  Serial.begin(9600);
}

void loop() {
  int val = analogRead(A0);

  Serial.println(val);

  delay(100);
}

Force sensors are sensors that change resistance based on how much force is applied on it. The more force applied, the lower the resistance. Force can be measured using the analog pins on the Arduino.

void setup() {
  Serial.begin(9600);
}

void loop() {
  int val = analogRead(A0);

  Serial.println(val);
}

Flex sensors are resistance-based sensors that react to how much they get bent. The more they are bent, the larger the resistance across the sensor. The Arduino is able to measure the changing resistance to determine how much the sensor is bent.

void setup() {
  Serial.begin(9600);
}

void loop() {
  int val = analogRead(A0);

  Serial.println(val);
  delay(100);
}