3 · Outputs & actuators
DC motor: speed and direction
Advanced22 min
Goal
Control a DC motor in speed (PWM) and direction (H-bridge).
Why it matters
A motor is never wired straight to a pin: it needs a power stage.
What you need
- Arduino UNO board
- Piezo buzzer
- Moteur à courant continu
- Driver L298N (2 moteurs)
Nothing to buy: every component below is simulated in the browser.
Steps
- 01Add the DC motor and its driver.
- 02Two direction pins (IN1/IN2) + one PWM pin (ENA).
- 03Write a motor(speed) function that accepts negative values.
- 04Test forward, stop, reverse.
This tutorial runs inside the Circuitly simulator: your wiring and your code are checked automatically at every step.
Frequently asked questions
- Do I need to buy hardware for this tutorial?
- No. Everything runs in the browser: Circuitly simulates the board, the components and the code. Real hardware is optional if you want to rebuild the circuit afterwards.
- Which components are used?
- Arduino UNO board, Piezo buzzer, Moteur à courant continu, Driver L298N (2 moteurs). They are already available in the simulator library.
- How long does it take?
- About 22 minutes, advanced level, in 4 guided steps.
- What should I know before starting?
- The previous tutorial in the series, “Servo driven by a potentiometer”, is enough preparation. No software install is required.
- Is the code provided and checked?
- The simulator checks your wiring and your code automatically at every step, and shows the commented solution if you get stuck.
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