RMRC Digital Airspeed Sensor for Pixhawk, Ardupilot, INAV
by RMRC

The RMRC Digital Airspeed Sensor is a critical component for autonomous fixed-wing aircraft, providing high-precision airspeed data to your flight controller. Designed specifically for the Pixhawk 2.1 (Cube), ArduPilot, and INAV ecosystems, this digital sensor uses the I2C bus to deliver superior accuracy and noise immunity compared to traditional analog sensors. Reliable airspeed data is essential for stall prevention, efficient cruise control, and accurate auto-landings, making this sensor a must-have for long-range mapping or FPV missions.

This unit features the high-performance MS4525DO sensor chip—the exact same sensor used in the popular Matek ASPD-4525. It serves as a direct, drop-in replacement for the Matek unit, offering identical performance and compatibility. The board comes pre-wired with a 4-pin JST-GH connector, allowing it to plug directly into the I2C port of a Cube/Pixhawk 2.1 without soldering or adapter cables. The complete kit includes a pitot tube and silicone tubing, ensuring you have everything needed for a seamless installation.

Key Features:

• Digital Precision: Utilizes the I2C protocol for noise-free, accurate airspeed readings.

• Direct Replacement: Uses the same sensor hardware as the Matek ASPD-4525, making it a perfect drop-in alternative.

• Plug-and-Play: Pre-wired with a JST-GH connector for direct compatibility with Pixhawk 2.1 (The Cube) and modern carrier boards.

• Broad Compatibility: Supported natively by major autopilot firmware including ArduPilot (ArduPlane) and INAV.

• Complete Kit: Includes the sensor board, pitot tube, and tubing for a hassle-free installation.

Specifications:

• Sensor Type: Digital (MS4525DO equivalent)

• Interface: I2C (SCL & SDA)

• Connector: 4-Pin JST-GH (Pixhawk 2.1 standard)

• Supply Voltage: 4.5V - 5.5V

• Accuracy: ±0.25% SPAN

• Max Overpressure: 300 psi

• Tubing Size: 2mm ID / 4mm OD

What is Included:

• 1x RMRC Digital Airspeed Sensor Board

• 1x Pitot Tube

• 1x Silicone Tubing (approx. 0.5m)

• 1x 4-Pin JST-GH Cable (15cm)

Recommended Related Items (Available at ReadyMadeRC):

• CubePilot Cube Orange+: The ideal flight controller for utilizing this digital sensor.

• RMRC Pitot Tube Mount: For a secure and aerodynamic installation of the probe.

• TBS Crossfire System: For a reliable long-range control link.