How to Measure DC Motor Current with ACS712 & Automatically Shut It Down! (Arduino Tutorial)
Want to protect your DC motor from overload and damage?
In this tutorial, you'll learn how to measure DC motor current using the ACS712 current sensor and automatically shut down the motor when the current exceeds a safe limit.
This Arduino-based project helps you build a simple yet powerful overcurrent protection system to prevent motor burnout caused by excessive load or mechanical stress.
🔧 What You'll Learn:
How the ACS712 current sensor works
Wiring ACS712 with Arduino
Reading and calibrating motor current
Setting a current threshold
Automatically turning off a DC motor when overloaded
Basic motor protection techniques
This project is perfect for robotics, automation systems, DIY electronics, and anyone working with DC motors.
🧠 Components Used:
Arduino board
ACS712 Current Sensor Module
DC Motor
Motor Driver (L298N / MOSFET / etc.)
External Power Supply
💡 Why This Matters:
Overcurrent conditions can permanently damage DC motors. By monitoring current in real time and implementing automatic shutdown, you can significantly extend your motor’s lifespan and improve system safety.
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