I am interested in Australian terrestrial orchids and carnivorous plants. I like to count and record data about them. At the moment I use a combination of 'Waypoint' (is there a better one than this?), 'GPS Hiker' and the 'LogGPS' iPhone Apps to handle this, but while they are ok, it would be nice to have a proper GIS tablet to handle the process. I can't justify a $2,000 - $20,000 commercial GIS tablet, so I thought I would have a go at making my own. You get lots of time to ponder these things as you walk around in the bush!
I am having a go at expanding what very little I know about Python to write and building hardware for my own prototype GIS Tablet: GIS-Pi.
* be project based, so I can call up and add data to previous projects or areas of interest
* Done: press the keyboard 'P' to take a photograph via RPi Camera
* Done: display and record where I have walked
* Done: display and track up to 3 waypoints around me
* Done: allow me to enter GIS metadata and notes about a waypoint (plant sighting)
* Done: display GPS error, distance from last data entry
* Done: possibly display a simple georeferenced map/aerial photo under the breadcrumb based tracked walk
* Done: save all data directly into a Shapefile format to allow for easy uploading into http://qgis.org/en/site/
* RPi A+
* Adafruit Ultimate GPS V3 board
* an i2c 3D compass board (haven't selected on yet)
* HDMIPi screen, or a smaller 5" HDMI board with touch screen. When is the official RPi touch screen being released?
* audio output for audio feedback, via sounds and the festival speech synthesis
* on screen keyboard, or an arm mounted Bluetooth based keyboard
* DS18B20 Temperature sensor, cheap and easy to integrate
* RPi camera, while not the best for close up photography, it's better than nothing and it's cheap and easy to integrate and georeference the photographs
* 18650 Li-ion batteries
* maybe a i2c based voltage/current monitor board for power management
* 3D printed ABS housing
Time frame? It would be nice to have something usable for the Australian Spring season, Sept/Oct 2015
Just out of interest to anyone else interested in playing around with GIS on a RPi, there is this Digital Geology thread that mentions GIS tablets as well: http://www.raspberrypi.org/forums/viewt ... =41&t=3859
and some link to other software and non-RPi projects. I was particularly interested in the QGIS Roam project, if it could run on a RPi: https://github.com/DMS-Aus/Roam
Love to hear about what other people have built or played around on the RPi platform.