RedRoosterKey · February 19, 2017 00:04 · Tornnnuts · Dec 8, 2020 · RedRoosterKey · Dec 8, 2020
diff --git a/ghostBox.py b/ghostBox.py
 #!/usr/bin/python
 from sense_hat import SenseHat
 from datetime import datetime
 import math,os,random,subprocess,time

 #
 # Background:
 #
 # I have seen various electronic devices on paranormal TV shows (most popular
 # being the Ovilus by Digital Dousing) that claim to convert "ghost energy" into
 # actual English words.  From the digital dousing website, they claim that their
 # ghost box simply "converts environmental readings into words."
 #  - https://www.digitaldowsing.com/shop/ovilus-v/
 # The algorithm for how this is done is not open source and could be as simple
 # as this example, which uses a raspberry pi and sensehat to pick up
 # "environmental readings" and using changes in that data to seed a random
 # number generator later randomly choosing a word from the provided dictionary.

 # To get this to work, you will need:
 # * A raspberry pi
 # * A sensehat
 # * The python sensehat library installed
 #     sudo apt-get install sense-hat
 # * A word list - set the "filename" variable (Results vary depending on the
 #                                              quality of your word list)
 # * (optional) The espeak library installed (if you wish to HEAR the ghosts)
 #                sudo apt-get install espeak
 #              Comment out the calls to espeak() if you don't need this.

 # You can have this program start up when the raspberry pi is powered by adding
 # something akin to the following into /etc/rc.local before the exit 0
 # 
 # # Ghost Box
 # cd /home/pi
 # su pi -c "python ghostBox.py" &

 # This code is very sensitive to physical movement, it works best when set in a
 # stationary position and read (or listened to) from about 3 or so meters away.


 # VARIABLES

 sense = SenseHat()
 sense.low_light = True # It's more fun at night :-)
 red = (255, 0, 0)
 white = (255, 255, 255)
 black = (0, 0, 0)

 # Put the location of your word list file here.
 # The one that Digital Dousing uses is available on their website.
 # https://www.digitaldowsing.com/product-guides/ovilus-v/word-list/
 filename="ovilus.txt"

 # The minimum percent change required to trigger a word.
 #  A higher number will cause the ghost box to produce fewer words.
 #  A lower number will cause the ghost box to produce more words.
 #  2.5 percent seems to be the magic number based on experimentation.
 percent_change_min=2.5

 # The number of seconds between readings.
 #  A higher number will cause the ghost box to produce fewer words.
 #  A lower number will cause the ghost box to produce more words.
 #  5 seconds feels like a good cadence.
 rest_period_between_readings=5


 # FUNCTIONS

 # Displays the message given, in the color given,
 #  right side up based on the detected acceleration of gravity.
 def show_right_side_up_message(sense, message, color):
    acc = sense.get_accelerometer_raw()
    x = acc["x"]
    y = acc["y"]
    orientation = 90
    if y > 0.75 :
        orientation = 0
    elif y < -0.75 :
        orientation = 180
    elif x > 0.75 :
        orientation = 270
    elif x < -0.75 :
        orientation = 90
    sense.set_rotation(orientation)
    sense.show_message(message, text_colour=color)

 # Get a random line from the file with the name provided
 #  and seed the rng with the given seed.
 def get_random_line(seed, filename):
    my_file = open(filename,'r')
    line = next(my_file)
    random.seed(seed)
    for num, aline in enumerate(my_file):
        if random.randrange(num + 2): continue
        line = aline
    return line
    
 # Get a heuristic aggregating all sensor data allowing general change detection.
 def aggregate_sense_data():
    hum = sense.get_humidity()
    temp = sense.get_temperature()
    temp_from_hum = sense.get_temperature_from_humidity()
    temp_from_press = sense.get_temperature_from_pressure()
    press = sense.get_pressure()
    
    o = sense.get_orientation()
    yaw = o["yaw"]
    pitch = o["pitch"]
    roll = o["roll"]

    mag = sense.get_compass_raw()
    mag_x = mag["x"]
    mag_y = mag["y"]
    mag_z = mag["z"]

    acc = sense.get_accelerometer_raw()
    x = acc["x"]
    y = acc["y"]
    z = acc["z"]

    gyro = sense.get_gyroscope_raw()
    gyro_x = gyro["x"]
    gyro_y = gyro["y"]
    gyro_z = gyro["z"]
    
    return hum + temp + temp_from_hum + temp_from_press + press + pitch + yaw \
        + roll + mag_x + mag_y + mag_z + x + y + z + gyro_x + gyro_y + gyro_z

 # Speak the words verbally through the headphone jack.
 # You must have espeak installed for this to work.
 def espeak(message):
   espeak = 'espeak -s100 "%s" 2>>/dev/null' % message
   subprocess.Popen(espeak, shell=True)

 # Display a basic animation to get us to look
 #  at the box before the message is displayed.
 # Keeps you from missing words if audio is disabled.
 def alert(sense):
    spiral_sequence = [
        [4, 4],
        [3, 4],
        [3, 3],
        [4, 3],
        [3, 3],
        [5, 3],
        [5, 4],
        [5, 5],
        [4, 5],
        [3, 5],
        [2, 5],
        [2, 4],
        [2, 3],
        [2, 2],
        [3, 2],
        [4, 2],
        [5, 2],
        [6, 2],
        [6, 3],
        [6, 4],
        [6, 5],
        [6, 6],
        [5, 6],
        [4, 6],
        [3, 6],
        [2, 6],
        [1, 6],
        [1, 5],
        [1, 4],
        [1, 3],
        [1, 2],
        [1, 1],
        [2, 1],
        [3, 1],
        [4, 1],
        [5, 1],
        [6, 1],
        [7, 1],
        [7, 2],
        [7, 3],
        [7, 4],
        [7, 5],
        [7, 6],
        [7, 7],
        [6, 7],
        [5, 7],
        [4, 7],
        [3, 7],
        [2, 7],
        [1, 7],
        [0, 7],
        [0, 6],
        [0, 5],
        [0, 4],
        [0, 3],
        [0, 2],
        [0, 1],
        [0, 0],
        [1, 0],
        [2, 0],
        [3, 0],
        [4, 0],
        [5, 0],
        [6, 0],
        [7, 0]
    ]
    # set them all white
    for x, y in spiral_sequence:
       sense.set_pixel(x, y, white)
       time.sleep(0.02)
    # set them all black
    for x, y in spiral_sequence:
       sense.set_pixel(x, y, black)
       time.sleep(0.02)

       
 # MAIN LOOP

 previous=aggregate_sense_data()
 alert(sense)
 espeak("Ghost Box Starting up!")
 show_right_side_up_message(sense, "Ghost Box!", red)

 while True:
    current=aggregate_sense_data()
    change=abs( (current / previous) - 1.0)
    if ( (percent_change_min / 100.0) < change ) :
        ghost_message = get_random_line(change, filename)

        # Logging output
        now = datetime.now() # this will not be accurate
                             # unless you have either a RTC or ntp with internet
        print str(now)
        print ghost_message
        
        alert(sense)
        espeak(ghost_message)
        show_right_side_up_message(sense, ghost_message, red)
        # it takes time to display the message so no sleep is required
    else:
        time.sleep(rest_period_between_readings)
    previous=current
	#!/usr/bin/python
	from sense_hat import SenseHat
	from datetime import datetime
	import math,os,random,subprocess,time

	#
	# Background:
	#
	# I have seen various electronic devices on paranormal TV shows (most popular
	# being the Ovilus by Digital Dousing) that claim to convert "ghost energy" into
	# actual English words. From the digital dousing website, they claim that their
	# ghost box simply "converts environmental readings into words."
	# - https://www.digitaldowsing.com/shop/ovilus-v/
	# The algorithm for how this is done is not open source and could be as simple
	# as this example, which uses a raspberry pi and sensehat to pick up
	# "environmental readings" and using changes in that data to seed a random
	# number generator later randomly choosing a word from the provided dictionary.

	# To get this to work, you will need:
	# * A raspberry pi
	# * A sensehat
	# * The python sensehat library installed
	# sudo apt-get install sense-hat
	# * A word list - set the "filename" variable (Results vary depending on the
	# quality of your word list)
	# * (optional) The espeak library installed (if you wish to HEAR the ghosts)
	# sudo apt-get install espeak
	# Comment out the calls to espeak() if you don't need this.

	# You can have this program start up when the raspberry pi is powered by adding
	# something akin to the following into /etc/rc.local before the exit 0
	#
	# # Ghost Box
	# cd /home/pi
	# su pi -c "python ghostBox.py" &

	# This code is very sensitive to physical movement, it works best when set in a
	# stationary position and read (or listened to) from about 3 or so meters away.


	# VARIABLES

	sense = SenseHat()
	sense.low_light = True # It's more fun at night :-)
	red = (255, 0, 0)
	white = (255, 255, 255)
	black = (0, 0, 0)

	# Put the location of your word list file here.
	# The one that Digital Dousing uses is available on their website.
	# https://www.digitaldowsing.com/product-guides/ovilus-v/word-list/
	filename="ovilus.txt"

	# The minimum percent change required to trigger a word.
	# A higher number will cause the ghost box to produce fewer words.
	# A lower number will cause the ghost box to produce more words.
	# 2.5 percent seems to be the magic number based on experimentation.
	percent_change_min=2.5

	# The number of seconds between readings.
	# A higher number will cause the ghost box to produce fewer words.
	# A lower number will cause the ghost box to produce more words.
	# 5 seconds feels like a good cadence.
	rest_period_between_readings=5


	# FUNCTIONS

	# Displays the message given, in the color given,
	# right side up based on the detected acceleration of gravity.
	def show_right_side_up_message(sense, message, color):
	acc = sense.get_accelerometer_raw()
	x = acc["x"]
	y = acc["y"]
	orientation = 90
	if y > 0.75 :
	orientation = 0
	elif y < -0.75 :
	orientation = 180
	elif x > 0.75 :
	orientation = 270
	elif x < -0.75 :
	orientation = 90
	sense.set_rotation(orientation)
	sense.show_message(message, text_colour=color)

	# Get a random line from the file with the name provided
	# and seed the rng with the given seed.
	def get_random_line(seed, filename):
	my_file = open(filename,'r')
	line = next(my_file)
	random.seed(seed)
	for num, aline in enumerate(my_file):
	if random.randrange(num + 2): continue
	line = aline
	return line

	# Get a heuristic aggregating all sensor data allowing general change detection.
	def aggregate_sense_data():
	hum = sense.get_humidity()
	temp = sense.get_temperature()
	temp_from_hum = sense.get_temperature_from_humidity()
	temp_from_press = sense.get_temperature_from_pressure()
	press = sense.get_pressure()

	o = sense.get_orientation()
	yaw = o["yaw"]
	pitch = o["pitch"]
	roll = o["roll"]

	mag = sense.get_compass_raw()
	mag_x = mag["x"]
	mag_y = mag["y"]
	mag_z = mag["z"]

	acc = sense.get_accelerometer_raw()
	x = acc["x"]
	y = acc["y"]
	z = acc["z"]

	gyro = sense.get_gyroscope_raw()
	gyro_x = gyro["x"]
	gyro_y = gyro["y"]
	gyro_z = gyro["z"]

	return hum + temp + temp_from_hum + temp_from_press + press + pitch + yaw \
	+ roll + mag_x + mag_y + mag_z + x + y + z + gyro_x + gyro_y + gyro_z

	# Speak the words verbally through the headphone jack.
	# You must have espeak installed for this to work.
	def espeak(message):
	espeak = 'espeak -s100 "%s" 2>>/dev/null' % message
	subprocess.Popen(espeak, shell=True)

	# Display a basic animation to get us to look
	# at the box before the message is displayed.
	# Keeps you from missing words if audio is disabled.
	def alert(sense):
	spiral_sequence = [
	[4, 4],
	[3, 4],
	[3, 3],
	[4, 3],
	[3, 3],
	[5, 3],
	[5, 4],
	[5, 5],
	[4, 5],
	[3, 5],
	[2, 5],
	[2, 4],
	[2, 3],
	[2, 2],
	[3, 2],
	[4, 2],
	[5, 2],
	[6, 2],
	[6, 3],
	[6, 4],
	[6, 5],
	[6, 6],
	[5, 6],
	[4, 6],
	[3, 6],
	[2, 6],
	[1, 6],
	[1, 5],
	[1, 4],
	[1, 3],
	[1, 2],
	[1, 1],
	[2, 1],
	[3, 1],
	[4, 1],
	[5, 1],
	[6, 1],
	[7, 1],
	[7, 2],
	[7, 3],
	[7, 4],
	[7, 5],
	[7, 6],
	[7, 7],
	[6, 7],
	[5, 7],
	[4, 7],
	[3, 7],
	[2, 7],
	[1, 7],
	[0, 7],
	[0, 6],
	[0, 5],
	[0, 4],
	[0, 3],
	[0, 2],
	[0, 1],
	[0, 0],
	[1, 0],
	[2, 0],
	[3, 0],
	[4, 0],
	[5, 0],
	[6, 0],
	[7, 0]
	]
	# set them all white
	for x, y in spiral_sequence:
	sense.set_pixel(x, y, white)
	time.sleep(0.02)
	# set them all black
	for x, y in spiral_sequence:
	sense.set_pixel(x, y, black)
	time.sleep(0.02)


	# MAIN LOOP

	previous=aggregate_sense_data()
	alert(sense)
	espeak("Ghost Box Starting up!")
	show_right_side_up_message(sense, "Ghost Box!", red)

	while True:
	current=aggregate_sense_data()
	change=abs( (current / previous) - 1.0)
	if ( (percent_change_min / 100.0) < change ) :
	ghost_message = get_random_line(change, filename)

	# Logging output
	now = datetime.now() # this will not be accurate
	# unless you have either a RTC or ntp with internet
	print str(now)
	print ghost_message

	alert(sense)
	espeak(ghost_message)
	show_right_side_up_message(sense, ghost_message, red)
	# it takes time to display the message so no sleep is required
	else:
	time.sleep(rest_period_between_readings)
	previous=current
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