Line Following Robot · Robonautshop

Line Following Robot

Beginner

Beginner LFR with IR array and N20 motors.

Build a classic LFR with an IR array, Nano, dual N20 motors, and a 2WD chassis. Ideal first competition robot.

Required parts total

৳2,285

9 required components

View LFR Starter Kit Read build guide Open in Robot Builder

Required components

Quantities, live stock from the mock inventory, and line prices.

N20 Metal Gear Motor · 100 RPM
Qty 2 · ৳180 each
In stock
৳360
Jumper Wire Pack (Male-Male)
Qty 1 · ৳90 each
In stock
৳90
5-Channel IR Sensor Array
Qty 1 · ৳320 each
In stock
৳320
Mini Toggle Switch

Project code examples

Starter sketches for wiring checks — adapt pin numbers to your board.

Print IR array pattern

Five digital channels on pins 2–6.cpp

const int irPins[5] = {2, 3, 4, 5, 6};

void setup() {
  Serial.begin(9600);
  for (int i = 0; i < 5; i++) pinMode(irPins[i], INPUT);
}

void loop() {
  for (int i = 0; i < 5; i++) {
    Serial.print(digitalRead(irPins[i]));
  }
  Serial.println();
  delay(100);
}