Matek Digital Airspeed Sensor AS-DLVR-I2C
by Matek Systems

The Matek AS-DLVR-I2C Digital Airspeed Sensor is a high-precision airspeed measurement module designed for ArduPilot and INAV 7.0+. Utilizing the All Sensors DLVR-L10D, this sensor delivers industry-leading accuracy and is currently the best airspeed sensor supported by ArduPilot.

With an I2C interface (0x28 address), the AS-DLVR-I2C offers seamless integration with supported flight controllers. It operates within a speed range of up to 227 km/h and a pressure range of 2500Pa, ensuring reliable performance across a -20°C to 85°C temperature range. Its low 5mA power consumption, lightweight 3.5g design, and clear silicon tubing with a Pitot tube make it ideal for fixed-wing drones, UAVs, and autonomous aircraft.

The AS-DLVR-I2C is compatible with ArduPilot (ARSPD_TYPE=9) and INAV 7.0+, making it a must-have for precision airspeed measurement and advanced UAV flight control.

Specifications:

Sensor & Performance:

• Sensor Type: All Sensors DLVR-L10D (Industrial Grade)
• Interface: I2C (SCL & SDA)
• I2C Address: 0x28
• Pressure Range: 2500Pa
• Maximum Pressure: 75kPa
• Speed Range: Up to 227 km/h
• Operating Temperature: -20°C ~ 85°C
• Current Consumption: 5mA

Electrical & Connectivity:

• Supply Voltage: 4V – 5.5V DC
• JST-GH Connector Pinout:
  • 5V (Power)
  • SCL (I2C Clock)
  • SDA (I2C Data)
  • GND

Physical Attributes:

• Weight: 3.5g (Sensor Board)
• Indicator: Red LED (3.3V Power Indicator)

Package Includes:

• 1x AS-DLVR-I2C Sensor Board
• 1x JST-GH-4P to JST-GH-4P 20cm Silicone Wire
• 1x Pitot Tube
• 1x Clear Silicone Tubing (40cm)

Compatibility & Setup:

• Compatible Flight Controllers:
  • ArduPilot (Set ARSPD_TYPE = 9)
  • INAV 7.0+
• Wiring Instructions:
  • 5V → Flight Controller 4-5.5V
  • SCL → Flight Controller I2C_SCL
  • SDA → Flight Controller I2C_SDA
  • GND → Flight Controller GND
• Additional Notes:
  • Only supports I2C connection. For CAN interface, use the Matek ASPD-DLVR or AS-DLVR-I2C with CAN Node L431.
  • ArduPilot has removed DLVR I2C support on flight controllers with 1MB flash MCUs (e.g., F405, F745 series).