e-Gizmo Hall Magnetic Sensor Module A1314 with Digital & True Analog Output

High-Precision A1314 Hall Effect Sensor Module

Unlock precise magnetic field detection with this versatile A1314 Hall Effect Sensor Module. Perfect for proximity switching, speed measurement (tachometers), and positioning applications, this board provides both raw telemetry and immediate threshold switching in a compact package.

Key Features

- Dual Outputs: Equipped with both an Analog Out (AO) for real-time magnetic field strength measurement and a Digital Out (DO) for threshold-triggered logic.
- Analog Output even allows the sensor to distinguish a magnet`s North or South Pole
-Onboard Threshold Adjust: Features a built-in potentiometer to easily tune the digital switching sensitivity.
- Visual Indicators: Integrated LEDs provide instant feedback for power and digital trigger status.

The Analog Advantage: A1314 vs. A3144

When shopping for magnetic sensors, details matter. Many lookalike modules on the market utilize the older A3144 sensor.

⚠️ Buyer Beware: Modules based on the A3144 cannot provide a true analog output because the A3144 chip itself is strictly a digital switch. Even if an A3144-based board features an "Analog" pin, it is typically non-functional or cloned.

Because this module uses the genuine A1314 linear Hall effect sensor, you get a true, continuous analog voltage proportional to the magnetic flux density, alongside standard digital switching.

How to Adjust the Digital Threshold
The digital threshold is adjusted using the onboard single-turn potentiometer (labeled RV1). Because the analog voltage can swing either up or down from the 2.5V baseline depending on the magnet`s polarity, you need to tune the threshold based on the specific pole you plan to face toward the sensor.Here is the quick process:

Step 1: Set the Baseline
Power the module with no magnets nearby. Turn the potentiometer until the digital output status LED (D1 OUT) just shuts off.

Step 2: Tune for Your Target Polarity
Bring your target magnet near the sensor in the exact orientation you intend to use it.
- If using a South Pole (Voltage Swings Up): Turn the potentiometer in the direction that makes the LED click ON when the magnet approaches, and OFF when it is pulled away.
-If using a North Pole (Voltage Swings Down): Turn the potentiometer in the opposite direction. You are tuning the internal comparator to trigger on a falling voltage rather than a rising one.

Step 3: Test the Distance
Move the magnet closer or further away to check your trigger distance. Fine-tune the screw slightly to achieve the exact physical detection distance your project requires.

(Note: Adjusting this threshold only changes the flip-point of the Digital Out pin; the Analog Out voltage remains a continuous, unadjusted reading of the actual magnetic field.)