Build gallery

Prompt

Make a smart recycling sorter from cardboard. Use a color or IR sensor on A0 and a servo gate on D9 to sort light items into two bins. Arduino Uno. Cutouts, wiring, and code.

Generated wiring

Generated code

// Sample copilot output: sorter
const int SENSOR = A0;
const int GATE = 9;

void setup() {
  pinMode(GATE, OUTPUT);
}

void loop() {
  int reading = analogRead(SENSOR);
  digitalWrite(GATE, reading > 400 ? HIGH : LOW);
  delay(80);
}

QA photos

Parts

• Arduino
• sensor
• servo
• cardboard

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

If this build gets stuck

• The sorter sends everything to one side
• My servo isn’t moving