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Re: [Paparazzi-devel] Lisa/M: Pitching Reversed and Rolling is Pitching

From: Gareth Roberts
Subject: Re: [Paparazzi-devel] Lisa/M: Pitching Reversed and Rolling is Pitching
Date: Tue, 31 Jan 2012 09:43:30 -0000
User-agent: Opera Mail/11.61 (Win32)

Hi Chris,

If you have an FTDI cable you should be able to connect the AP straight to your GCS without needing to setup the xbees. This will be invaluable in debugging - it could be your IMU orientation is incorrect, in which case you'll pick it up straight from the GCS. If the IMU is correct, your servos must be reversed somewhere. Also check your transmitter for reverses - remove all reverses on the tx and then verify the transmitter xml is correct.

I'd seriously recommend getting messages hooked up, you're going to be debugging in the dark otherwise.


On Tue, 31 Jan 2012 00:01:24 -0000, Roman Krashanitsa <address@hidden> wrote:

Chris, also make sure you have all your changes actually written to the
autopilot. Otherwise your XML files show one thing and your firmware has
completely different things.

2012/1/30 Chris Wozny <address@hidden>


After having fixed the servo deflection cut-off problem, I have run
into a situation which lacks documentation on the wiki (hopefully I
can update it once it's fixed!) The aircraft's servos will pitch up
when rolling left and pitch down when rolling right. Then pitching up
and down is reversed when using the right stick vertically. The
pitching up/down being reversed I can deal with, but I have no idea
why my aircraft is pitching when it's being told to roll. Also, the
deflection is a little funky. I've included a video of everything I
just expressed since a picture is worth a thousand words, then a video
should be worth many millions :)

Also, here are the configuration files I'm currently using (you'll
have to view source in case your browser tries to render the XML

I don't have access to any messages from the GCS since I haven't yet
tried the XBee Pro 900 MHz modems with Lisa/M.

University of Arizona MAV

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