This is a discussion to focus the feedback and support of ardupilot on the PixRacer board from AUAV.co.
We believe that all teething problems encountered are now resolved and so we recommend people load Copter-3.3.4 which is available for all multicopters through the Mission Planner's (and other GCS's) Install Firmware screens. Note that because regular Pixhawks are still on Copter-3.3.3 the install icon may show Copter-3.3.3 but rest assured, Copter-3.3.4 will be installed (you can check the version by looking at the very top of the Mission Planner).
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That is correct. The Pixracer's servo rail does not connect to its internal 3V3 regulator. That is powered only via the power module input and the USB port.
A "star" ground configuration will keep motor currents out of the ground connection for the avionics.
thanks ^^
I've just pushed a bugfix to master that fixes ESC calibration on the PixRacer. Previously the "boot with throttle high and then reboot" method did not work as the FMU outputs did not get properly armed. Peter Barker noticed the problem on his new 250 quad today and it should now be fixed. It will take a few hours as usual to get through the build server.
Able to successfully calibrate ESCs via boot with throttle high method on AC3.4dev today.
Unable with AC 3.3.4 (ccebcd30). Long tone from PixRacer then no tones from ESCs.
I just finished setting up a new copter with PixRacer and a recent version of 3.4-dev (53c095).
All went smooth: uploading the firmware, calibration of all 3 mags, as well as ESC calibration. The copter flies rock solid in stabilize (I'll test the other modes the next days). Seem most problems are solved :-)
Great work! Thanks!
Thorsten
pixracer is a real improvement hardware i am very happy to see that arducopter are going to sort of issues
I have been working on a project to implement PixRacer with Plane and am really close to being able to test fly. I have the latest dev version loaded. Other than the obvious risks are there any major concerns about being able successfully fly PixRacer - with the latest Plane dev version? From my tests the latest dev release seams to have implemented most of the features that I needed which the public general release does not have. Thanks for your advice and help.
@Tim,
I am not aware of any issues with flying master on a Pixracer with a plane. It should fly just the same as a Pixhawk with the same firmware version.
Cheers, Tridge
x2 re- with the 3.4 and EKF 2 enabled and internal compass disabled w/ pixhawk. "Still some alt_hold trouble.
It still makes small yaw adjustments, and occasionally some sudden bursts of power/increases in altitude."
By the way, we're going to start beta testing Copter-3.4 certainly within a week. I'll do a new blog post and we might do the testing/support discussion on the new ardupilot discourse servers.
We think EKF2 is in better shape now after a bunch of changes from Paul & Tridge over the weekend. Leonard has some more changes he wants to put into Copter-3.4 so we need to decide whether to wait for those before officially starting or to handle them in -rc2.
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