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Hall Current Sensor 150A
Brand: Matek
Product Code: 150A
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Hall Current Sensor 150A
Description
1. Product Overview
1.1. Product Description
The Matek Hall Current Sensor 150A (HCS-150A) is a high-precision DC current and voltage sensing module designed for UAVs, drones, and robotics systems. Using Hall effect technology, it measures current flow without introducing voltage drop or heat, making it ideal for high-current applications requiring accurate telemetry and minimal power loss.
1.2. Key Features
- Hall effect current sensing — no shunt resistor, no voltage drop, low heat generation.
- Continuous current range: 0 – 150A DC.
- Current output sensitivity: 20 mV per Ampere.
- Voltage sense range: 0 – 69V via Vbat pad.
- Power supply range: 4 – 13V DC.
- Power consumption: approximately 17 mA.
- Accuracy: about ±5% output voltage error.
- Operating temperature: -30°C to +80°C.
- Minimal magnetic interference and high electrical isolation.
- Compact design: 23 × 20 × 23 mm, weight: ~7 g.
2. Technical Specifications
Table 2-1. Matek HCS-150A Sensor Specifications
| Parameter | Specification |
|---|---|
| Model | HCS-150A |
| Measurement Type | Hall Effect (Non-Contact DC Current Sensor) |
| Current Range | 0 – 150A DC |
| Current Sensitivity | 20 mV/A |
| Voltage Sense Range | 0 – 69V |
| Power Supply Input | 4 – 13V DC |
| Power Consumption | ~17 mA |
| Output Voltage (Current) | 0 – 3.3V |
| Output Voltage (Voltage) | 1/21 × Vbat, 0 – 3.3V |
| Accuracy | ±5% |
| Zero Current Offset | ±10 mV |
| Operating Temperature | -30°C to +80°C |
| Dimensions | 23 × 20 × 23 mm |
| Weight | ~7 g |
| Signal Outputs | Vbat, Volt, Curr, 5V, GND |
| Mounting Type | Inline current sensing with isolated Hall element |
| Accuracy Notes | May vary ±5%, calibration recommended for precision systems |
3. Pinout and Connection
- Vbat: Voltage measurement input (0 – 69V).
- Volt: Output = (Vbat / 21), 0 – 3.3V range.
- Curr: Current signal output, 0 – 3.3V range.
- 5V: Power input, supports 4 – 13V DC.
- GND: Ground reference.
4. Applications
- UAVs & Drones: Real-time current and voltage telemetry for power monitoring.
- RC Aircraft: Efficient battery usage tracking and overload protection.
- Robotics: Current feedback for motor control and diagnostics.
- FPV Systems: Integration with flight controllers (ArduPilot, INAV, Betaflight).
5. Setup & Integration
- Connect the sensor’s 5V and GND pads to the flight controller power rail.
- Connect the Curr pad to the current input pin of the FC (e.g., “CURR” pad).
- Connect the Volt pad to the FC voltage sense pin (“BAT” pad).
- Configure scaling values:
- INAV / Betaflight: current_scale = 200, voltage_scale = 2100.
- ArduPilot: BATT_AMP_PERVLT = 50, BATT_VOLT_MULT = 21.0.
- Calibrate zero-current offset if required (expected ±10 mV).
- Keep away from ferrous or magnetic materials to prevent interference.
6. Advantages
- No voltage drop or power loss across the sensor.
- Excellent electrical isolation for sensitive electronics.
- Low noise and heat compared to traditional shunt resistors.
- Compact, lightweight, and easy to integrate into power systems.
- Ideal for telemetry and energy monitoring in high-current applications.
7. Limitations & Notes
- Do not exceed 150A DC continuous current rating.
- Ensure the power supply is within 4 – 13V to avoid damage.
- Accuracy may vary; calibration is recommended for precision tasks.
- Avoid installation near strong magnetic fields (motors, ESCs, etc.).
- Not suitable for AC current measurement.
8. Practical Summary
The Matek Hall Current Sensor 150A provides reliable and efficient measurement of current and voltage using non-contact Hall effect technology. With high isolation, no shunt loss, and easy flight controller integration, it is ideal for UAVs, robotics, and RC systems requiring precise power monitoring up to 150A. Compact and robust, this sensor ensures accurate telemetry without affecting system performance.
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