I have not had the opportunity to use it before, but have found the Google Code hosting  (code.google.com) to be quite helpful.  The site allows you to create a project, project members, home page, etc.  You can also have a “wiki” and issues list if you really want to manage a project right from the site.  We are using it for the source code from the UnlockingAndroid book.  Check it out.

I am working on an article project for IBM Developerworks.  We (my son Tristan and I) have decided that we want our (Android oriented) system to monitor:

1. presence of water (i.e. for leaks!)
2. temperature
3. power consumption (Tristan’s idea!).

We will also include a generic analog input value and two ouputs : one digital i/o and an analog value.  These could be used for turning on a light, a heater, etc.

Things we would like to add (should we ever build this for real…) include:

1. sound monitoring
2. video input
3. audio out

The architecture will look something like this to begin with:

Phase I - Android to PC to Microcontroller