Everything You Need to Know About the KY-024 Sensor
When it comes to magnetic field detection in Arduino and DIY electronics, the KY-024 linear magnetic Hall sensor module is a top choice for both beginners and advanced makers. This tiny yet powerful component helps detect magnetic field strength and direction with high accuracy. Whether you’re building a robot, creating a proximity alert system, or experimenting with magnetic fields, the KY-024 gives you the precision and reliability you need.
At Shop4Makers, we aim to provide not just the best electronic components but also the knowledge you need to unlock their full potential. This guide offers a deep dive into the KY-024 sensor, including how it works, how to use it, and ten inspiring applications that will take your projects to the next level.
What Is the KY-024 Linear Magnetic Hall Sensor?
The KY-24 is a magnetic Hall effect sensor module designed to detect the presence, absence, and strength of magnetic fields. It consists of:
- A Hall effect sensor
- An analog output
- A digital output
- A potentiometer for sensitivity adjustment
This dual-output setup makes the KY-24 extremely versatile. The analog output allows for precise measurement of magnetic field strength, while the digital output can be used for simple on/off detection when a magnetic threshold is reached.
Key Specifications:
- Operating Voltage: 3.3V – 5V
- Output Types: Analog and Digital
- Adjustable Sensitivity: Yes
- Dimensions: Compact and breadboard-friendly
Top 10 DIY Projects You Can Build With the KY-024
1. Magnetic Door Alarm System
Using the KY-24 sensor, you can build a door alarm system that triggers whenever a door or window is opened. The magnetic field changes as the door moves, and the sensor detects the absence or presence of the field. It’s a great beginner project for smart home enthusiasts.
2. DIY Tachometer for RC Vehicles
You can attach a small magnet to a rotating wheel and use the KY-24 to count rotations. With a bit of math, you can calculate the speed in RPM and display it on an LCD screen. It’s a popular project among RC car hobbyists.
3. Proximity-Based Light Automation
Want your lights to turn on automatically when you approach your workbench? By combining the KY-024 with a relay module and a strategically placed magnet, you can build a touchless light switch.
4. Magnetic Key Lock System
Replace traditional locks with a magnetic key system. By embedding a magnet inside a keychain or object and using the KY-024 to detect it, you can create a hidden locking mechanism for drawers or cabinets.
5. Speed Sensing for Conveyor Belts
In industrial or prototype manufacturing systems, the KY-024 sensor can be placed near a rotating shaft. By tracking magnetic pulses, you can measure the belt speed and adjust performance dynamically.
6. Robotics: Magnetic Position Tracking
In robotic arms and mobile robots, the KY-024 can help determine position by detecting magnetic fields placed along a track or inside specific locations. This enables better orientation and navigation systems.
7. Magnetic Field Mapping
By moving the KY-024 across different zones and logging its analog output, you can create a visual map of magnetic field intensity across a surface or space. This is ideal for educational and research purposes.
8. Magnetic Proximity Sensor for Safety
In hazardous environments, you can use the KY-024 to detect the proximity of metal equipment or tools using embedded magnets. This helps prevent accidents and maintains machine safety protocols.
9. Smart Drawer or Cabinet Detection
In retail or workshops, the KY-024 can detect when drawers are opened or closed. This can be connected to alert systems, inventory tracking, or even for automation in robotic storage.
10. Interactive Art or Game Controllers
Use the KY-024 to create input devices for games or art installations. By moving a magnet across the sensor, you can trigger various actions or effects, turning it into a creative user interface.
Why Choose the KY-024 from Shop4Makers?
At Shop4Makers, we offer high-quality KY-024 sensors that are rigorously tested and ready to be integrated into your projects. When you buy from us, you also gain access to:
- Reliable shipping across Morocco and worldwide
- Customer support to guide you in your builds
- A growing library of tutorials, guides, and inspiration
We believe that electronics should be accessible, educational, and fun. That’s why each product we sell is backed by our commitment to maker-friendly pricing and expert support.
How to Connect the KY-024 Sensor to Arduino
While we won’t go into coding in this article, it’s important to understand how the sensor is typically wired:
- VCC → 5V on Arduino
- GND → GND
- DO (Digital Out) → Any digital pin
- AO (Analog Out) → Any analog pin
Once connected, you can calibrate the sensor using the onboard potentiometer to adjust sensitivity. From there, you can either read the magnetic field level with analogRead() or set a threshold for on/off detection using digitalRead().
KY-024 Sensor: Final Thoughts
The KY-024 linear magnetic Hall sensor is more than just a simple component. It’s a gateway to dozens of innovative applications in automation, robotics, security, and smart home systems. Whether you’re a student, teacher, hobbyist, or entrepreneur, integrating the KY-024 into your projects can elevate both the functionality and intelligence of your designs.
At Shop4Makers, we’re proud to support the DIY community by providing affordable, reliable components like the KY-024 along with the know-how to use them. Ready to build something amazing?
👉 Order your KY-024 Sensor now on Shop4Makers and start your next great project!