Picture:

Unabridged Video:

Code:

The meat of the Android code is these two lines:

         if ((time == DAY) && (prevTime == NIGHT))

             new Sound(mContext).play("/sdcard/rooster.mp3");

And then here's the digital ratchet filter used to cleanup the unfiltered light sensor output:

                    if ( (sensorVal < 50) && (ratchetCounter > ratchetMin))

                        ratchetCounter--;

                    if (ratchetCounter == ratchetMin)

                        time = NIGHT;

                    if ((sensorVal > 400) && (ratchetCounter < ratchetMax))

                        ratchetCounter++;

                    if (ratchetCounter == ratchetMax)

                        time = DAY;

                    if ((time == DAY) && (prevTime == NIGHT))

                        new Sound(mContext).play("/sdcard/rooster.mp3");

         prevTime = time;

Ingredients:

2x Arduino

1x AT&T Cell Modem

1x Wireless Router

1x BeagleBoard with Android Ambrosia

1x BeagleTouch

1x AMBI Light Sensor

1x Humidity & Temperature Sensor

1x Pelican Case

2x Deep Cycle Marine Batteries

2x 12V Solar Panels

Recommended tools:

Shovel

Recommended Helpers:

Chris Ladden

Matt Mehling

Justin Huynh

Mike Gionfriddo

Rith Ong

Wiring Diagram:

Coming soon

Block Diagram:

Coming soon

More Pictures:

Coming Soon