Usage

Running

To run hauntedpi

$ python main.py

Constants

Update the constants.py file with the details of your inputs and outputs

Scenes

For each scene you wish to configure create a file in the scenes dir. See the files in that directory for examples but you should just make calls to the director methods to play sound and switch you outputs.

Director Commands

director.add_input(channel)

Configure a GPIO for input. This function returns the channel so can also be used to define constants for each channel

e.g to define a constant for a push button on GPIO 5 BUTTON_5 = director.add_input(5)

director.add_output(channel, initial=False)

Configure a GPIO for output. This function returns the channel so can also be used to define constants for each channel

e.g to define a constant for a relay switch on GPIO 5 RELAY_5 = director.add_output(5)

You can also optionally pass the inital value so the same call with default output HIGH would be RELAY_5 = director.add_output(5, True)

director.add_trigger(channel, callback, args, bouncetime=200, edge=RISING)

Call a function when an input GPIO is triggered

e.g to call the function play when GPIO 5 is triggered director.add_trigger(5, play, ()))

director.schedule(function, arguments, delay)

Schedules a function to be called after the defined delay in seconds

e.g to call the play function after 10 seconds director.schedule(play, (), 10)

director.set_on(channel, delay=0, duration=None)

Sets an output HIGH. Takes optional delay and duration. Passing a duration will turn the output LOW after duration seconds

e.g to set GPIO 23 HIGH for 10 seconds in 20 seconds time director.set_on(23, 20, 10)

director.set_off(channel, delay=0, duration=None)

Sets an output LOW. Takes optional delay and duration. Passing a duration will turn the output HIGH after duration seconds

e.g to set GPIO 23 LOW for 10 seconds in 20 seconds time director.set_off(23, 20, 10)

director.play_sound(sound, delay=0)

Play the sound at the given file location.

Raspberry Pi Tips

Update rasbian

$ sudo apt-get update $ sudo apt-get upgrade

Install pygame

$ sudo apt-get install python-pygame

Set mixer to auto output

If there is no sound from your pi when playing a sound file. You can run the following command to set the audio output Last number can also be 1 to force headphones.

$ sudo amixer cset numid=3 0

Hiss on audio output

raspberrypi/firmware#380 Add the following line to the file /boot/config.txt

disable_audio_dither=1