All sensors DLVR series is the best airspeed sensor ArduPilot currently support.
Specifications Sensor: All sensors DLVR-L10D, Industrial temperature range
Interface: I2C (SCL & SDA) Sensor I2C address: 0x28 Pressure Ranges: 2500Pa Maximum Pressure: 75kPa Operating Temperature: -25°C ~ 85°C Board Supply voltage: 4~5.5V DC Working current: 5mA Red LED: 3.3V power indicator JST-GH sequence: 5V, SCL, SDA, GND Weight: 3.5g (sensor board)
Including 1x AS-DLVR-I2C Sensor Board. 1x JST-GH-4P to JST-GH-4P 20cm silicon wire Pitot Tube. Clear silicon tubing 40cm Wiring 5V to FC 4~5.5V SCL to FC I2C_SCL SDA to FC I2C_SDA G to FC GND