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The two components of the fishing rod were the casting mechanism and the box for the electronics housing. The casting mechanism is made up of 1/4" acrylic links connected with 6 mm bearings at the joints. Before the final laser cuts of the acrylic links were made, the prototype was cut out of 1/4" wood. The electronics housing is a jigsaw box of 1/4" wood with 3 of the 4 walls glued to each other to minimize the collapsibility, yet retain the ability to open the box and view the circuit. At the bottom of the electronics housing is a 3D printed attachment ah with an opening that allows for a weight to be inserted at the front. As a finishing touch, the wood of the electronics housing was painted black to match the color aesthetic of the 3D printed parts.
The
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- 1 Arduino Uno Board
- 1 9V Battery
- 1 270 degree Servo Motor
- 1 Breadboard with at least 2 power buses and 20 terminal rows
- 3 Push Buttons
- 3 220 Ohm Resistors (Each wired in series with one of the buttons)
Software Development
Below is our code used by the Arduino to control the position of the servo. We ended up only using two of the three buttons since we ran out of time to fully develop the reel mechanism. The code below controls the position of the rod with two buttons.
Middle button - Sets the casting mechanism back to home.
Right button - Casts the casting mechanism.
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#include <Servo.h>
// Define Button Pins
#define BUTTON1_PIN 2
#define BUTTON2_PIN 4
#define BUTTON3_PIN 7
// Servo
Servo servo1;
int servoPos = 0;
const int maxServoPos = 180;
bool windingUp = false;
void setup() {
// initialize serial communications at 19200 bps:
Serial.begin(19200);
// Servo setup
servo1.attach(9); // Attaching the servo to pin 9
servo1.write(0); // Move servo to home position
// Button inputs
pinMode(BUTTON1_PIN, INPUT);
pinMode(BUTTON2_PIN, INPUT);
pinMode(BUTTON3_PIN, INPUT);
}
void loop() {
// Read button states
bool button1State = digitalRead(BUTTON1_PIN);
bool button2State = digitalRead(BUTTON2_PIN);
bool button3State = digitalRead(BUTTON3_PIN);
if (windingUp) {
// Check if the winding up condition should be terminated
if (!(button1State == HIGH && button2State == HIGH)) {
windingUp = false;
servoPos = 0;
servo1.write(servoPos); // Move servo to position 0 degrees when released
} else if (servoPos < maxServoPos) {
servoPos++;
servo1.write(servoPos);
delay(15); // Control the winding speed
}
} else {
// Condition for both buttons pressed simultaneously
if (button1State == HIGH && button2State == HIGH) {
windingUp = true;
} else if (button1State == HIGH) {
servo1.write(0); // Move servo to position 0 degrees
} else if (button2State == HIGH) {
servo1.write(66); // Move servo to position 66 degrees
} else if (button3State == HIGH) {
servo1.write(132); // Move servo to position 132 degrees
}
}
}
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