Scary halloween Pumpkin
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Project: punkin_pi

Scary Halloween pumpkin with lights and sound controlled by a Raspberry Pi. Refer to element14 blog posts for more info:

Written by Bonnie King and Drew Fustini. Code and design is public domain. These instructions were tested on the current Raspbian 2012-Sept-18 image from

Install dependencies:

sudo apt-get update

sudo apt-get install git-core mplayer python-setuptools

sudo easy_install bottle

sudo easy_install RPi.GPIO

Note: If running an earlier image, then you may encounter an error on when installing the RPi.GPIO in that last step ("couldn't find Python.h"). To resolve the error, run "sudo apt-get install python-dev" and then "sudo easy_install RPi.GPIO" again. Thanks to Joel Dunn for the advice.

Install sound clip files:

pi@raspberrypi ~ $ mkdir files

pi@raspberrypi ~ $ cd files

pi@raspberrypi ~/files $ wget

pi@raspberrypi ~/files $ wget

pi@raspberrypi ~/files $ wget

Any files that mplayer can play can be put into /home/pi/files such as .wav, .mp3 & .ogg.

Install & run punkin_pi:

pi@raspberrypi ~ $ git clone

To run the demo server:

pi@raspberrypi ~ $ cd punkin_pi

pi@raspberrypi ~/punkin_pi $ sudo python ./

Audio troubleshooting:

If you want to check if punkin_pi will be able to play a particular file in /home/pi/files, then try to play it with mplayer:

mplayer /home/pi/files/howl.wav

Sometimes the sound system may become unstable and produce errors. Restarting ALSA should resolve this:

/etc/init.d/alsa-utils restart

If your speakers lack a volume control, then the ALSA mixer can be used: