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AP_Periph, Digital Airspeed Sensor ASPD-DLVR
Brand: Matek
Product Code: ASPD-DLVR
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AP_Periph, Digital Airspeed Sensor ASPD-DLVR
Description
1. Product Overview
1.1. Product Description
The Matek ASPD-DLVR Digital Airspeed Sensor is a high-precision digital sensor module designed for use with modern flight controllers via CAN (DroneCAN/UAVCAN) or I2C interfaces. It measures differential air pressure through a pitot tube to calculate accurate airspeed for fixed-wing, VTOL, and UAV applications. Fully compatible with ArduPilot via the AP_Periph firmware.
1.2. Key Features
- Fully compatible with ArduPilot and AP_Periph CAN nodes.
- Supports both CAN (DroneCAN/UAVCAN) and I2C interfaces (address 0x28).
- Input voltage: 4.5 – 5.5 V.
- Low power consumption: approximately 60 mA.
- Operating temperature range: -20 °C to +85 °C.
- Pressure range: 2500 Pa (±10 inH₂O), burst pressure up to 75 kPa.
- Speed measurement range: up to ±250 km/h.
- Compact and lightweight design: 22 × 22 × 12.5 mm, ~4 g.
- Includes pitot tube and silicone tubing in most kits.
- Provides accurate real-time airspeed and differential pressure readings.
2. Technical Specifications
Table 2-1. ASPD-DLVR Sensor Specifications
| Parameter | Specification |
|---|---|
| Model | ASPD-DLVR |
| Interface | CAN (DroneCAN/UAVCAN), I2C (0x28) |
| Input Voltage | 4.5 – 5.5 V |
| Current Consumption | ≈ 60 mA |
| Pressure Range | 2500 Pa (±10 inH₂O) |
| Burst Pressure | 75 kPa |
| Speed Range | ±250 km/h |
| Operating Temperature | -20 °C to +85 °C |
| Dimensions | 22 × 22 × 12.5 mm |
| Weight | ≈ 4 g |
| Compatibility | ArduPilot, PX4 (AP_Periph) |
| Included Accessories | Pitot tube, tubing, JST-GH cables (varies by kit) |
3. Setup & Integration
- For CAN connection: set
ARSPD_TYPE = 8(DroneCAN) in ArduPilot parameters. - For I2C connection: set
ARSPD_TYPE = 9(I2C-DLVR). - Connect the pitot tube correctly with “+” to dynamic pressure and “–” to static pressure ports.
- Mount the pitot tube facing the airflow with minimal obstruction.
- Ensure proper calibration before first flight for accurate speed readings.
- Supports fixed-wing, VTOL, and hybrid UAV platforms.
4. Applications
- Fixed-Wing Aircraft: Airspeed-based control and stall detection.
- VTOL Drones: Enhanced energy management and precision hovering.
- UAV Research: Reliable data for aerodynamic analysis and performance tuning.
- Autonomous Systems: Integration with CAN-based autopilot systems.
5. Benefits
- High-precision digital output for accurate flight performance monitoring.
- Industrial-grade sensor design for consistent operation in harsh environments.
- Supports modern autopilot protocols (DroneCAN/UAVCAN).
- Lightweight, compact, and easy to install.
6. Limitations & Notes
- Ensure proper ArduPilot parameter setup for chosen communication mode.
- Incorrect pitot tube installation may cause inaccurate readings.
- Calibrate before flight and inspect tubing for leaks.
- At very high airspeeds, periodic verification of readings is recommended.
7. Practical Summary
The Matek ASPD-DLVR Digital Airspeed Sensor combines modern digital sensing technology with robust CAN/I2C connectivity, offering high-accuracy airspeed measurement for fixed-wing and VTOL aircraft. With reliable performance, low power consumption, and ArduPilot compatibility, it is an essential component for precision flight control and aerodynamic monitoring.
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