I purchased a cheap Nokia 5110 from Deal Extreme it can display around 5 lines at 14 characters per line, as well as graphics.  I based my program on Andre's C code to write lines of info to the display. Here it is running sample code:

It's pretty much wired up as per his instructions.

I have connected the Adafruit Ultimate GPS to the Raspberry Pi using the Serial Python module.  My C code GPS software works as well.

I am using the first version of the Raspberry Pi for this.

Coming from a FreeBSD world, it took me a while to figure out the device names for the various Linux serial port names, namely:

Back in 2007 or so I wrote a C program to read my TP-200 serial port based GPS unit.  I was supprised to find that in 2012, the same program would compile on a Raspberry Pi Linux environment!  Go POSIX programming.

Attached is the C code file and my Makefile I use to compile it.  Use at your own risk.  It works for me, but maybe not you?  To use it, I just run  ./gps > gps_data_file-20121121.txt  and a number of lines will be written to the file each second.

I have a new Adafruit Ultimate GPS.  It's very small and I have integrated it to my Raspberry Pi with an adaptor cable that connects onto an external antenna.  You can see this blog post about how it's connected up to the Raspberry Pi.

I have been playing with the Quantum GIS software and using it to record some botanical field information I have been collecting.  After I had played around with the PHP scripts on this page:  http://www.bdug.org.au/node/193  I thought it would be interesting to see a visual representation of where the photos had been taken, much like people had done in Google Earth etc.  I could also use it to see what photographs I had taken with the iPhone out on my survey site.  

Like most of us digital natives, I have a collected a lot of digital photographs.  Most of these are in a JPEG format.  A number of years ago, I played around with some PHP scripts to extract EXIF information from a collection of photographs.  Of course you need to first compile PHP with exif support.  Here is a simple starter script to get you going:

<code>

You can read more info here:

This is just a page of links to general information on Macro photography that I have found useful.

Interesting URL's:

Interesting page on dealing with difficult Macro photography subjects:  http://www.janrik.net/insects/ExtendedDOF/DifficultTestCase.html

This a page of interesting information that I found on cataloguing biological specimens

Interesting URLs:

http://www.ala.org.au/faq/species-identification/identification-keys  identification key systems

http://code.google.com/p/darwincore/wiki/Occurrence   info on cataloguing data on biological specimens