Build gallery

Prompt

A mini delivery vehicle that follows a black line on white paper and stops when it reaches a mark. Two DC motors, two IR sensors, Arduino Uno, cardboard chassis. Cutouts, wiring, and code.

Generated wiring

Generated code

// Sample copilot output: line follower
const int L = A0;
const int R = A1;

void setup() {
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
}

void loop() {
  bool left = analogRead(L) < 500;
  bool right = analogRead(R) < 500;
  analogWrite(5, left ? 0 : 160);
  analogWrite(6, right ? 0 : 160);
}

QA photos

Parts

• Arduino
• motors
• sensor
• cardboard

Difficulty and time are from the QA log for this prompt, not a timed class period.

If this build gets stuck

• The line follower ignores the line
• The motors spin but the robot doesn’t drive
• The motor or servo gets hot and stops