Table of Contents
Eagle Tree Systems Airspeed Sensor
The Eagle Tree Airspeed Sensor provides differential pressure output measurements in pascal via I2C and includes a simple LED display that display the maximum speed reached.
The user manual provides information on general usage as well as how to install it on your airframe.
What you will need
- Eagle Tree Airspeed Sensor (V3)
- Hirose DF13 4 pos housing (Digi-Key Link: Hirose DF13-4S-1.25C) or Hirose DF13 15 pos (Digi-Key Link: DF13-15S-1.25C15-pos) connector.
- 4 pre-crimped cables
- Soldering iron
- white: GND
- red: +5V
- yellow: SDA
- brown: SCL
You can choose to connect it to the DF13 15-pos connector on the PX4FMU board if you wish to use I2C1 or I2C2 or on the PX4IO port you can use the I2C3 DF13 4-pos port.
Manually Starting the Driver
nsh> ets_airspeed start
To check whether the app is running:
nsh> ets_airspeed status
To stop, use:
nsh> ets_airspeed stop
Once you have started the driver you can run the test and then gently blow directly into the pitot. You should see some non-zero values in the output. To run the tests run:
nsh> ets_airspeed test
–bus / -b
The default bus is bus 3 (I2C3).
Starting the app using an alternative bus, such as I2C1.
nsh> ets_airspeed start -b 1
Auto Starting the Driver
Add the following line to
/etc/extras.txt on your microSD card: