ART
BEAUTÉ ET BIEN-ÊTRE
ARTISANAT
CULTURE ET HISTOIRE
DIVERTISSEMENT
ENVIRONNEMENT
NOURRITURE ET BOISSONS
AVENIR VERT
INGÉNIERIE INVERSE
SCIENCES
SPORTS
TECHNOLOGIE
TECHNOLOGIE PORTABLE
Controlling a DC Motor with an L298N Driver
Ed

Créé par

Ed

13. juillet 2026FI
2
0
0
0
0

Controlling a DC Motor with an L298N Driver

An Arduino pin can't power a motor directly — it can't supply enough current, and it can't reverse the flow. An L298N H-bridge solves both: the Arduino sends low-power control signals, and the driver switches the motor's own battery to run it forwards, backwards and at any speed. This is the core building block of every wheeled robot.

Intermédiaire
1-2 hours

Consignes

1

Wire the driver, motor and battery

Push the L298N's control header into the breadboard. From the Arduino, jumper pin 8 to IN1, pin 9 to IN2, and pin 10 to ENA. Connect the DC motor's two wires to the OUT1/OUT2 screw terminals, and a 4×AA battery pack to the +12V and GND motor terminals. IMPORTANT: join all the grounds together — Arduino GND, driver GND and battery GND — or the motor won't run.

Matériaux pour cette étape :

Arduino Uno R3 SMDArduino Uno R3 SMD1 pièce
Full-Bridge Motor Driver Dual - L298NFull-Bridge Motor Driver Dual - L298N1 pièce
Hobby Motor - GearHobby Motor - Gear1 pièce
Battery Holder - 4xAA Square TerminatedBattery Holder - 4xAA Square Terminated1 pièce
Breadboard - ClassicBreadboard - Classic1 pièce
Jumper Wires Premium M/M 20 AWG - 15.5 cmJumper Wires Premium M/M 20 AWG - 15.5 cm1 paquet
2

Connect and open the IDE

Plug the Arduino into your computer with the USB cable, open the Arduino IDE, and select Arduino Uno and its serial port. Leave the motor battery switched off until the code is uploaded.

Matériaux pour cette étape :

SparkFun Cerberus USB Cable - 1.8 meterSparkFun Cerberus USB Cable - 1.8 meter1 pièce

Outils nécessaires :

Computer with Arduino IDEComputer with Arduino IDE
3

Upload the motor sketch

Paste this sketch and upload, then switch on the battery. The motor runs forward, stops, reverses, and stops — on a loop.

dc_motor_l298n.inoarduino
// Control a DC motor's speed and direction with an L298N H-bridge.
// L298N IN1 -> pin 8, IN2 -> pin 9, ENA (PWM speed) -> pin 10.
// The motor is powered by the battery pack through the driver; all grounds are joined.

const int IN1 = 8;
const int IN2 = 9;
const int ENA = 10;   // PWM speed pin (0-255)

void setup() {
  pinMode(IN1, OUTPUT);
  pinMode(IN2, OUTPUT);
  pinMode(ENA, OUTPUT);
}

void loop() {
  // forward at medium speed
  digitalWrite(IN1, HIGH);
  digitalWrite(IN2, LOW);
  analogWrite(ENA, 180);
  delay(2000);

  // stop
  analogWrite(ENA, 0);
  delay(1000);

  // reverse at full speed
  digitalWrite(IN1, LOW);
  digitalWrite(IN2, HIGH);
  analogWrite(ENA, 255);
  delay(2000);

  // stop
  analogWrite(ENA, 0);
  delay(1000);
}
4

Test and control it

Watch the motor go forward, stop, reverse. IN1/IN2 set the direction (swap which is HIGH to flip it); the number in analogWrite(ENA, ...) sets the speed from 0 (off) to 255 (full). If the motor doesn't spin, check that all three grounds are joined and the battery is on.

5

Make it a robot

The L298N drives TWO motors. Wire a second motor to OUT3/OUT4 and control it with IN3, IN4 and ENB on three more Arduino pins. Two motors on a chassis with wheels gives you a robot base you can drive — turn by running the wheels at different speeds or directions.

Matériaux

7

Outils requis

1
Total estimé
$60.00

Blueprints liés

Ces blueprints partagent des connaissances — techniques, matériaux ou principes

Blinking LED — Your First Arduino Projectpar Admiral OOM
Driving a Motor — SIK Circuit 12par Ed

Related blueprints

Other builds that share materials, tools, or techniques with this one.

Controlling a Stepper Motor with an EasyDriverelectronics
Blinking an LED with LilyPad Arduinoelectronics
Making a Motion-Reactive LilyPad Patchelectronics
Making a Color-Changing LilyPad Patchelectronics
Building a Carbon Monoxide Detectorelectronics
Building an Air-Quality Monitorelectronics

CC0 Domaine public

Ce blueprint est publié sous CC0. Vous êtes libre de copier, modifier, distribuer et utiliser ce travail pour tout usage, sans demander la permission.

Soutenez le Maker en achetant des produits via son Blueprint où il perçoit une Commission Maker définie par les Vendeurs, ou créez une nouvelle itération de ce Blueprint et incluez-le comme connexion dans votre propre Blueprint pour partager les revenus.

Commentaires

(0)

Se connecter pour participer à la discussion

Chargement des commentaires...