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[Paparazzi-devel] Re: Interfacing to the EagleTree airspeed sensor
From: |
Vassilis V . |
Subject: |
[Paparazzi-devel] Re: Interfacing to the EagleTree airspeed sensor |
Date: |
Mon, 7 Sep 2009 21:27:42 -0400 |
I got both the airspeed and altimeter sensors from EagleTree working.
The source code and some data can be found at:
http://vrhome.net/vassilis
At this point I am simply passing the airspeed and altitude through
the telemetry down to the ground station. The next step is to work on
fw_v_ctl.c to allow the airspeed to be used for controlling the
throttle (i.e. maintain constant airspeed). This will take me a bit
longer, I will let you know when I have something working.
Vassilis
On Sep 6, 2009, at 9:59 AM, Vassilis V. wrote:
All,
I had a successful flight with the EagleTree airspeed module ( http://www.eagletreesystems.com/Support/manuals/airspeed-v3.pdf
) connected to my TWOG. I did not have to do any hardware
modifications, the sensor has an I2C interface that I connected
directly to the TWOG I2C port. I was able to figure out the slave
address and decode the raw output of the sensor. The results are
quite good, the module is low cost ($43) and comes with a very good
pitot tube that includes static and dynamic ports. For now I am
simply sending the airspeed through the telemetry, the next step
would be to modify the autopilot code to regulate the throttle in
order to keep the airspeed constant (and a minimum ground speed). I
will do the same with the altimeter sensor.
See http://vrhome.net/vassilis for more information, I will publish
the code as soon as I have the altimeter tested (probably in a week
or so). Is there any interest on getting this released code released
into CVS?
Vassilis