KASHTAN ASPD-MS4525 (I²C) Airspeed Sensor

KASHTAN ASPD-MS4525 (I2C) is a high-precision digital airspeed sensor developed by the Ukrainian brand KASHTAN for use in unmanned aerial vehicles (UAVs), drones, gliders, and other autonomous platforms. The device determines airflow speed by measuring differential pressure (the difference between static and dynamic pressure), providing accurate and real-time data for autopilots and navigation systems.

Description and Compatibility

The module is compatible with popular firmwares and autopilots, including ArduPilot and PX4. Its compact size and low weight make it an optimal choice for professional and amateur platforms where mass and reliable data transmission are critical. The protected I2C bus ensures signal stability in conditions of electromagnetic interference.

Technical Specifications:

• Sensor Type: MS4525
• Measurable Speed Range: ±360 km/h
• Accuracy: ±0.25% SPAN
• Interface: I2C (protected bus)
• Supply Voltage: 4.4–5.5 V
• Current Consumption: ≤5 mA
• Operating Temperature Range: -40°C to +125°C
• Operating Pressure: 1 psi (6.89 kPa)
• Maximum Pressure: 20 psi (137.9 kPa)
• Weight: 3 g
• Dimensions: 20 × 20 × 13.2 mm
• Firmware Support: ArduPilot, PX4

Features

• High accuracy of airspeed measurement even in complex flight conditions.
• Compatibility with modern autopilots thanks to the standard I2C interface.
• Protection against electrostatic discharges on the I2C bus for enhanced data transmission reliability.
• Compactness and light weight — critically important for small drones and gliders.
• Developed in Ukraine — guarantees quality and local manufacturer support.

Package Contents

• 1× KASHTAN ASPD-MS4525 (I2C) sensor module
• 1× JST-GH-4P to JST-GH-4P silicone cable, 20 cm long
• 1× Pitot tube
• 1× transparent silicone tube, 40 cm long

Pinout

• GND → Autopilot GND
• SCL → Autopilot I2C_SCL
• SDA → Autopilot I2C_SDA
• VDD → Autopilot 4.4–5.5 V

The KASHTAN ASPD-MS4525 sensor is ideally suited for demanding applications requiring precise airspeed indication: automatic flight mode adjustment, aerodynamic model correction, ensuring flight stability and safety. Low power consumption (≤5 mA) and a wide operating temperature range (-40°C to +125°C) allow for effective use of the module in extreme conditions and at various altitudes. Thanks to its compact dimensions of 20×20×13.2 mm and a weight of only 3 g, the sensor is attractive for small and lightweight platforms.

Manufacturer Information: KASHTAN is a Ukrainian brand that provides local support and quality control. Product Category: Drones and Quadcopters > Drone Accessories.

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