Though not essential to flight, the addition of an airspeed sensor to a fixed-wing aircraft can substantially increase the Flight Controller's efficacy of operation. It can also give humans in the loop useful information about how the aircraft is performing.
Once you fly with airspeed, it's hard to go back!
Specifications
Board Supply voltage: 4~5.5V DC
Sensor: MS4525DO
Working current: 5mA
Output: I2C (SCL & SDA)
Pressure Ranges: 1 PSI (6.89kPa)
Maximum Pressure: 20 PSI (137.9kPa)
Operating Temperature: -40°C ~ 125°C
Accuracy: ±0.25% SPAN
Red LED: power indicator
JST-GH sequence: 5V, SCL, SDA, GND
Weight: 3.5g (sensor board)
Including
1x ASPD-4525 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
Tips
There is known Airspeed sensor issue with INAV3.0.0 & 3.0.1
Please use other INAV firmware version. e.g. 3.0.2 or 4.0.x
Diagram of pitot tube installation:
