A radio experiment
A radio experiment
Control visuals with a Wiimote.
National Weather Service REST API
Now using this API with Max and Pd. See the Internet sensors projects:
By John Ross at The Australian
Successfully installed this GPS board on the R-Pi.
By Kevin Townsend at adafruit.com
The drivers for the console cable were already in the Raspian distribution on the R-Pi.
I installed the gpsd (daemon) software as directed in the above tutorial.
Documentation for gpsd is here:
Sample C code is: gpxlogger.c and cgps.c – which can be found in tkzic/rpi/gpsd 3.7/
(todo – write sample code and add to telemetry tracker)
Near IR + imaging.
note: have not tried any of these yet, but did get GPS working on the r-pi
Notes on high altitude balloon tracking using APRS.
Byonics TT3 is another option – a separate APRS encoder, to be combined with GPS and transmitter, for example:
When reading the value of a switch with Arduino, its useful to set the INPUT_PULLUP mode so you don’t need to use an external pullup resistor. By the way, the internal pull-up resistor is 20K ohms.
See this tutorial:
If its not clear what a pull-up resistor does, read the links on this forum post.
Everybody has their own way to explain it. I would say that when the switch is open, the pull-up resistor weakly pulls the logic value high, so you don’t get random signal readings.
(update) the feed is working – I changed the datastream name from sensor_value to count – and just had it upload a random value every time for testing.
Some initial testing with the Ethernet shield encountered missing libraries when compiling the example sketch which cosm.com provides when setting up an Arduino type feed.
Here is the forum post which explains which libraries are missing: http://community.cosm.com/node/1694
and here is the helpful quote…
You should try using new official Cosm library for Arduino.
You can download a snapshot zip file here:
You will also need this HTTP library:
See here for more details on how to install a 3rd-party
library on different OS:
You will find a bunch of usefull examples within the
Cosm library. Please let me know if you have any questions.