Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | 3144 |
| Sensor Type | Hall Effect Switch |
| Operating Voltage | 3.3V - 5V DC |
| Output Signal | Digital (TTL) |
| Detection Object | Magnetic Field |
| PCB Dimensions | 24mm x 16mm |
| Mounting Hole Diameter | 3mm |
| Response Time | < 1ms |
| Interface | 3-Pin Header (VCC, GND, OUT) |
| Application | Motor Speed Counting, Position Detection |
Anonymous
Mar 24, 2026
Rating: 5/5
Great for learning embedded systems
As a student, this was an affordable way to learn about Hall effect sensors. It interfaces easily with Raspberry Pi GPIO pins as well. Highly recommended for beginners.
Anonymous
Mar 24, 2026
Rating: 5/5
Compact and efficient
Small footprint makes it easy to fit into tight spaces in my custom drone build. The digital output simplifies the code significantly compared to analog sensors.
Anonymous
Mar 20, 2026
Rating: 4/5
Works well but needs calibration
The module functions correctly, but you need to adjust the distance between the magnet and the sensor carefully to avoid false triggers. Once set up, it runs smoothly.
Anonymous
Mar 19, 2026
Rating: 4/5
Good value, sensitive detection
The sensor is quite sensitive, which is great for low-speed applications. Just make sure your magnet is strong enough. The pinout is clearly labeled on the back of the PCB.
Anonymous
Mar 18, 2026
Rating: 5/5
Perfect for Arduino RPM projects
This module works flawlessly with my Arduino Uno. I used it to measure the speed of a small DC motor, and the readings were consistent. The onboard LED indicator is very helpful for debugging.
Anonymous
Mar 04, 2026
Rating: 5/5
Reliable counting switch
I bought five of these for a conveyor belt counter project. All of them worked out of the box. The response time is fast enough for my needs, and the build quality feels solid.
Q: Does this module work with 3.3V logic levels?
A: Yes, the 3144 Hall Sensor Module operates comfortably within the 3.3V to 5V range, making it compatible with both 3.3V and 5V microcontrollers.
Q: Can I use this outdoors?
A: While the sensor itself is robust, the PCB is not waterproof or weather-sealed. For outdoor use, we recommend enclosing the module in a protective housing.
Q: Is the output normally high or normally low?
A: The output state depends on the specific variant, but most 3144 modules are configured to output LOW when a magnetic field is detected and HIGH when no field is present. Please check the datasheet for your specific batch.
Q: How many wires do I need to connect?
A: You only need three connections: VCC (Power), GND (Ground), and OUT (Signal). The module comes with a 3-pin header ready for jumper wires.
Q: What kind of magnet is required for this sensor?
A: A standard neodymium or ferrite magnet works well. The sensor detects the presence of a magnetic field; ensure the pole orientation matches the sensor's trigger requirement (usually South pole).
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