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Just ordered my FreeRunner.
I want to use it as bicycle computer.
These are just ideas and wishes - not worth to make a separate wiki page.
Due to the relatively high current consumption of the Freerunner a power supply from a hub dynamo seems to be unavoidable.
I skip the switch mode regulator and will use simple Z-Diode parallel to the Freerunner. Later I want to add an LED light parallel to both.
On Freerunner there is no need to read from gpsd or similar. I just can get the data from /dev/ttySAC1
Of the travelled track and also of the upcoming (hopefully OSM will soon provide elevation information of the roads)
Garmin Etrex Legends trip information display is to stupid. I want infos for the current day and for the time since last break.
If I have internet access via the phone during my trip I can regularily update my on webpage with location markers as shown here: http://wiki.openstreetmap.org/index.php/Openlayers_POI_layer_example
The GPS does not give sufficiently accurate vertical speed. A barometric sensor (see Variometer) would be nice. Calculation of the vertical speed by integrating the accelerometer readings also not accurate. But maybe it is possible to use the accelerometers to measure the slope of the road. How to calibrate it? Is it possible to automatically calibrate it from GSP reading?
By measuring the increase of the total acceleration not by change of the acceleration angle.
Can the road (e.i. surface) quality be recorded by measuring the vibrations with the accelerometers?
... using the builtin microphone. Or would it be possible with the accelerometers using high sampling rate?
Are there Bluetooth Heart Rate Transmitters available?
Pedal sensors with Bluetooth and power supply by magnetic induction would be nice.
Otherwise USB with an FTDI chip.
Python
python-etk could not find any documentation yet. Seems to be the same as python-gtk.
I don't want to have eye-candies. Maybe Eye-candies are neccessary for selling phones. Eye-candies cause eye-caries or even brain-caries. ;-) It is for gamers.
Colors are o.k. if they carry information. Gradients of menu bars are useless and annoying.
matplotlib? might be an overkill. Anything usable lightweight available?
Mount the Freerunner to the shin and measure the damping and motion style with different shoes at various speeds. Especially interesting to watch the aging of the shoes (different damping).
I would like to have a simple application to add map information at my current location. Say, I am standing beneath an ATM, just use a menu item "Add ATM" and typing in its name - finished. There is no need for a map display. The program just displays the OSM nodes near the current location. And you can add a new node or modify an existing node.
There is not much space to use the touchscreen as an ordinary piano keyboard.
What about using the touchscreen like the left hand fingering on a guitar, mandolin, banjo ore similar? The touchscreen lays in front of you in landscape mode. There are four rows, one for each finger.
| D# | G | B | d# | | D | F# | A# | d | | C# | F | A | c# | | C | E | G# | c | This layout might be to simple. Should it be optimized for easy chord playing?
Octave shifting via accelerometer reading?
Similiar project: http://www.neo1973-germany.de/wiki/epiano Obviously not what I am having in mind.