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project1.py
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project1.py
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from mpu6050 import mpu6050
import RPi.GPIO as GPIO
import time
import math
import pyaudio
import numpy as np
GPIO.setmode(GPIO.BCM)#Set GPIO pin numbering
TRIG = 14 #Associate pin 23 to TRIG
ECHO = 15 #Associate pin 24 to ECHO
GPIO.setwarnings(False)
GPIO.setup(TRIG,GPIO.OUT) #Set pin as GPIO out
GPIO.setup(ECHO,GPIO.IN)
# octaves = [[16.3,17.32,18.35,19.45,20.60,21.83,23.12,24.50,25.96,27.50,29.14,30.87],[32.70,34.65,36.71,38.89,41.20,43.65,46.25,49.00,51.91,55.00,58.27,61.74],[65.41,69.30,73.42,77.78,82.41,87.31,92.50,98.00,103.8,110.0,116.5,123.5],[130.8,138.6,146.8,155.6,164.8,174.6,185.0,196.0,207.7,220.0,233.1,246.9],[261.6,277.2,293.7,311.1,329.6,349.2,370.0,392.0,415.3,440.0,466.2,493.9],[523.3,554.4,587.3,622.3,659.3,698.5,740.0,784.0,830.6,880.0,932.3,987.8],[1047,1109,1175,1245,1319,1397,1480,1568,1661,1760,1865,1976],[2093,2217,2349,2489,2637,2794,2960,3136,3322,3520,3729,3951],[4186,4435,4699,4978,5274,5588,5920,6272,6645,7040,7459,7902]]
upper_limit = [30.87,61.74,123.5,246.9,493.9,987.8,1976,3951,7902]
lower_limit = [16.35,32.70,65.41,130.8,261.6,523.3,1047,2093,4186]
def read_distance():
GPIO.output(TRIG, False) #Set TRIG as LOW
# print ("Waitng For Sensor To Settle")
#time.sleep(2) #Delay of 2 seconds
GPIO.output(TRIG, True) #Set TRIG as HIGH
time.sleep(0.00001) #Delay of 0.00001 seconds
GPIO.output(TRIG, False) #Set TRIG as LOW
while GPIO.input(ECHO)==0: #Check whether the ECHO is LOW
pulse_start = time.time() #Saves the last known time of LOW pulse
while GPIO.input(ECHO)==1: #Check whether the ECHO is HIGH
pulse_end = time.time() #Saves the last known time of HIGH pulse
pulse_duration = pulse_end - pulse_start #Get pulse duration to a variable
distance = pulse_duration * 17150 #Multiply pulse duration by 17150 to get distance
distance = round(distance, 2) #Round to two decimal points
if distance > 2 and distance < 400: #Check whether the distance is within range
print ("Distance:"),distance - 0.5,("cm") #Print distance with 0.5 cm calibration
else:
print "Out Of Range" #display out of range
return distance
def frequency(d,ll):
print "checking frequency",
x1 = 10
x2 = 50
if d >= x2 :
f = lower_limit[ll]
elif d <= x1:
f = upper_limit[ll]
else:
f = upper_limit[ll] + ((lower_limit[ll] - upper_limit[ll])/(x2 - x1))*(d - x1)
# f = ((-15.486)*(read_distance()))+571.33 # sine frequency, Hz, may be float
return f
def volume(x,y,z):
print "checking volume",
y -= math.pi/2
z -= math.pi/2
per_tilt_x = (x * 180 / math.pi)*0.9
per_tilt_y = (y * 180 / math.pi)*0.9
per_tilt_z = (z * 180 / math.pi)*0.9
# print -1 * per_tilt_y , "percent tilt for volume movement"
v= -1 * per_tilt_y
v = v*100 / 67
if v > 100:
return 0
elif v < 0:
return 100
else:
return 100 - v
def octave(x,y,z):
print "checking octave number",
y -= math.pi/2
z -= math.pi/2
per_tilt_x = (x * 180 / math.pi)*0.9
per_tilt_y = (y * 180 / math.pi)*0.9
per_tilt_z = (z * 180 / math.pi)*0.9
oc = 0
if (-1*per_tilt_y) < 2.9:
x -= math.pi
per_tilt_x = (x * 180 / math.pi)*0.9
if per_tilt_z < 0:
print " octave movement : " , -1 * per_tilt_x
oc = -1 * per_tilt_x
else:
print " octave movement : " , per_tilt_x
oc = per_tilt_x
else:
return 4
if oc < 10 and oc > -10:
return 4
elif oc > 10 and oc < 30:
return 5
elif oc > 30 and oc < 50:
return 6
elif oc > 50:
return 7
elif oc < -10 and oc > -50:
return 3
elif oc < -50 :
return 2
return 4
def play():
p = pyaudio.PyAudio()
sensor = mpu6050(0x68)
vol = 1.0 # range [0.0, 1.0]
fs = 4000 # sampling rate, Hz, must be integer
duration = 5 # in seconds, may be float
#for i in samples:
# print i,"\n"
# play. May repeat with different volume values (if done interactively)
while(1):
print "\nstarting"
data = sensor.get_accel_data()
r_acc = pow((pow(data["x"],2) + pow(data["y"],2) + pow(data["z"],2)),0.5)
# print r_acc
x_angle = math.acos(data["x"]/r_acc)
y_angle = math.acos(data["y"]/r_acc)
z_angle = math.acos(data["z"]/r_acc)
vol = volume(x_angle,y_angle,z_angle)/100
print vol
ll = octave(x_angle,y_angle,z_angle)
print "octave number : " , ll
f=frequency(read_distance(),ll)
print f
# generate samples, note conversion to float32 array
samples = (np.sin(2*np.pi*np.arange(fs*duration)*f/fs)).astype(np.float32)
# for paFloat32 sample values must be in range [-1.0, 1.0]
stream = p.open(format=pyaudio.paFloat32,channels=1,rate=fs,output=True)
stream.write(vol*samples)
stream.stop_stream()
stream.close()
p.terminate()
play()