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Updated README + started chorizo code

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Phyks 2013-10-28 22:04:24 +01:00
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46
README.md
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Touchless 3D Tracking
===================
----
This is based on an original project by [Kyle Mc Donald](https://github.com/kylemcdonald) : http://www.instructables.com/id/DIY-3D-Controller/.
Our slightly adapted setup is documented on my hacklab website [hackens.org](http://hackens.org/). All the documentation can be found here : **(documentation to be written)**.
Our slightly adapted setup is documented on my hacklab website [hackens.org)](http://hackens.org/) (in french, I may write english doc if some people are interested in that). All the documentation can be found here : http://hackens.org/Projets/TouchlessTracking **(in french, documentation will be written soon, after some extra tests)**.
In this repository, you'll find :
@ -30,21 +29,40 @@ You'll also find some basic Python scripts as examples on possible use of the se
This script represents the position of your hand in the RGB space. You can then pick a color by placing your hand at a specific point in the box of the electrodes.
### Chorizo.py
__(working on)__
A script to play music using chorizo pads as a musical keyboard. See [our website](http://hackens.org/Projets/TouchlessTracking) (french, but vids are available, more coming soon) for infos and demos.
### 3d_view.py
__(working on)__
Same as _colors.py_ but represents the position in real space (cube view) rather than in RGB space.
### Some ideas (TODO List)
* Same as colors.py but representing it with a 3D view.
* Then, use the previous code as a control interface for your computer, just like Minority Report :)
* Other ideas ? It's up to you :)
## Note about the license
# ============================================================================
# All the scripts in this repository are released under a very permissive
# license. To make a long story short : do whatever you want with these
# scripts (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
# =============================================================================
TLDR; I don't give a damn to anything you can do using this code. It would just
be nice to quote where the original code comes from.
* -----------------------------------------------------------------------------
* "THE NO-ALCOHOL BEER-WARE LICENSE" (Revision 42):
* Phyks (webmaster@phyks.me) wrote this file. As long as you retain this notice
* you can do whatever you want with this stuff (and you can also do whatever
* you want with this stuff without retaining it, but that's not cool...). If we
* meet some day, and you think this stuff is worth it, you can buy me a
* <del>beer</del> soda in return.
* Phyks
* ------------------------------------------------------------------------------
## Thanks
* `Baltazar` from hackEns for his help to set it up and for the original idea.
* [Kyle Mc Donald](https://github.com/kylemcdonald) for his documentation on his setup
* [PRKTRNIC](http://vimeo.com/68763028) (video in french) for the idea about playing music with chorizo and sausages !

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chorizo.py Executable file
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#!/usr/bin/env python3
import wave
import math
import pyaudio
NomFichier = "temp"
Monson = wave.open(NomFichier, 'w')
channels = 1 # Mono
sample_size = 1 # Size of a sample -> 8 bits
sampling_freq = 44100 # Sampling frequency
freq = 440 # Note frequency
length = 5 # Length of the note in seconds
level = 150 # Between 0 (max < 0) and 255 (max > 0), 0 is 127
sample_number = int(length*sampling_freq)
parameters = (channels, sample_size, sampling_freq, sample_number, 'NONE',
'not compressed')
Monson.setparams(parameters) # File header
for i in range(0, sample_number):
value = int(128.0+level*math.sin(2.0*math.pi*freq*i/sampling_freq))
wave.struct.pack('h', value)
Monson.close()
wf = open(NomFichier, 'rb')
p = pyaudio.PyAudio()
stream = p.open(format=p.get_format_from_width(wf.getsampwidth()),
channels=wf.getnchannels(),
rate=wf.getframerate(),
output=True)
data = wf.readframes(CHUNK)
while data != '':
stream.write(data)
data = wf.readframes(CHUNK)
stream.stop_stream()
stream.close()
p.terminate()

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music.py
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#!/bin/env python
# NOTE : This script is *not* working yet...
# ============================================================================
# I had to play "Petit papa Noël" in an original way for some events. So, why
# not using these cool electrodes to handle it ? Left hand would control the
# volume and right hand, the note which is played.
#
# Disclaimer : Even with a lot of practice, I'm not sure you will be able to
# play a nice with this script :)
#
# 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
# =============================================================================
import serial
import pygame
import sys
import getopt
serial_port = "/dev/ttyACM0"
try:
opts, args = getopt.getopt(sys.argv[1:], "hs:", ["help", "serial="])
for opt, arg in opts:
if opt == "-h" or opt == "-help":
print("Touchless 3D tracking with color mapping")
print("\nUsage : "+sys.argv[0]+" [OPTIONS]")
print("\nTrack the position of your hand in 3D and map it " +
"in RGB space")
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
ser = serial.Serial(serial_port, 115200)
try:
ser.open()
except Exception as e:
print("Error while opening serial port : "+str(e))
if ser.isOpen():
try:
ser.flushInput()
ser.flushOutput()
print("Calibration :")
print("Press any key to launch the program when calibration is " +
"finished.")
running = True
while running:
for event in pygame.event.get():
if event.type == pygame.KEYDOWN:
running = False
continue
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] < minimum[i] or minimum[i] < 0:
minimum[i] = line[i]
if line[i] > maximum[i]:
maximum[i] = line[i]
print(line)
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]
# Compute the value for red
value[1] = value[0]
value[0] = compute_value(line, minimum, maximum)
value_bg = [(value[0][i] + value[1][i])/2 for i in range(3)]
value_text = [255 - i for i in compute_value(line, minimum,
maximum)]
ser.close()
except Exception as e:
print("Error while fetching data from serial : "+str(e))