So I’ve been fooling with the new AeroQuad 2.5.1 code, and I’ve integrated some fixes posted by Kenny9999 (an AeroQuad.com forum user), as well as integrated my battery level compensation code.  Unfortunately though, putting in both makes the code a little too big to fit into the 32256 bytes you have available on the Uno with the Optiboot bootloader.

Update 19th April 2012 - I finally go an ATmega2560, so I fixed the code to work with memory paging and also updated the patches to work with all the latest versions of AVRDUDE and the Bus Pirate firmware.
Update 12th January 2013 - Haven’t touched this stuff in a while, but a reader informed me that the patch no longer works with the latest SVN.  I’ve updated it to work with the latest SVN (release 1132 as of this writing).

One of the things I wanted to do with my Bus Pirate was figure out how to apply it like an FTDI cable for the purposes of uploading sketches to an Arduino.  It took me a little stuffing around to do it, but here’s the condensed version of how to make it work;

Had a bright and sunny day yesterday, and I got the chance to test out a theory I’ve seen discussed on the AeroQuad forums - namely that sunlight affects the BMP085 barometer.  The sun was bright and warm, but the air was cool.

NOTE:  This article was written for the Arduino 022 IDE, not for the release 1.0.  Things are now quite a lot simpler in the 1.0 IDE, so this article will be getting a severe editing once I get to retest everything.  Stay tuned.

Just got my delivery made, and now I have a Sparkfun Bus Pirate!  One thing I noticed straight away is that the cable provided has exactly the same colour scheme as the original Seeedstudio version, but the shroud on the 10-pin header is reversed, meaning that all the colours were swapped.