#!/usr/bin/env python3 # ============================================================================ # This script allows you to play music using a chorizo (or whatever food you # like) keyboard ! See README for more info and links. # As all the other scripts in this repository, I release it under a very # permissive license. To make a long story short : do whatever you want with # this script (but try to have fun :), I don't mind. It would be cool to quote # the origin of the script if you reuse it, but you don't have to. I'd like to # be noticed of what you did cool with it (if you think it's worth). :) # Ah, I almost forgot : If by chance we ever meet and you think this script is # worth, you can buy me a soda :) # # Phyks # ============================================================================= from sound4python import sound from multiprocessing oimport Process import math import serial import sys import getopt def play_wave(frequency=440, nb_secs=1): sine_wave = [] for i in range(nb_secs*framerate): sine_wave.append(int(16384*math.sin(2*math.pi*frequency*i/framerate))) sound(sine_wave) serial_port = "/dev/ttyACM0" try: opts, args = getopt.getopt(sys.argv[1:], "hs:", ["help", "serial="]) for opt, arg in opts: if opt in ("-h", "--help"): print("Play music with chorizos !") print("\nUsage : "+sys.argv[0]+" [OPTIONS]") print("\nOptions :") print("\t-h (--help) \t display this help message") print("\t-s (--serial=) \t change serial port (default is " + "/dev/tty/ACM0") sys.exit(0) elif opt in ("-s", "--serial"): serial_port = arg except getopt.GetoptError: pass try: ser = serial.Serial(serial_port, 115200) except Exception as e: sys.exit("Error with serial port :"+str(e)) framerate = 16000 frequencies = [440, 600, 880] gap_times = 10 p = [] for i in range(3): processes.append(Process(target=play_wave, args=(frequencies[i], 1))) processes[-1].start() try: ser.open() except Exception as e: sys.exit("Error while opening serial port : "+str(e)) if ser.isOpen(): try: ser.flushInput() ser.flushOutput() measures = [[], [], []] print("Calibration :") print("Touch each chorizo electrodes before starting") for i in range(10000): line = ser.readline() line = line.decode().strip("\r\n") line = line.split(" ") line = [int(j or 0) for j in line] for j in range(3): measures[j][i] = line[j] # Get threshold threshold = [-1, -1, -1] for i in range(3): gap = -1 for j in range(1, 10000): if measures[i][j] - measures[i][j-1] > gap: gap = measures[i][j] - measures[i][j-1] threshold[i] = (measures[i][j]+measures[i][j-1])/2 print("Running...") running = True while running: # Read line from serial line = ser.readline() line = line.decode().strip("\r\n") line = line.split(" ") line = [int(j or 0) for j in line] for i in range(3): if line[i] > threshold[i]: print("Playing") p[i].start() p[i].join() except Exception as e: sys.exit("Error while handling data from serial : "+str(e))