Vibrator

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(Simple Python Script For Playing Beats)
Line 47: Line 47:
 
     playFile(sys.argv[1])
 
     playFile(sys.argv[1])
  
== Example Beat ==
+
==== Example Beat ====
 
The following is an example "song" file that can be used to test the beat player.
 
The following is an example "song" file that can be used to test the beat player.
  

Revision as of 09:55, 26 July 2008

Contents

Vibrator

This is in reference to the vibrator in the Neo Freerunner, however it is likely identical to the Neo 1973, as best I can tell.

Controlling

The vibrator is controlled through:

 /sys/class/leds/neo1973\:vibrator/brightness

When off, it will read 0. Valid ranges appear to be 0-255, with 255 being the fastest.

Python Script For Playing Beats

Reads beats from a file and plays them on the openmoko vibrator.

File format is human readable text, consisting of a simple sequence of integer pairs. The first number in the pair representing the intensity of the vibration from 0 to 255. The second number represents the duration in milliseconds to hold that intensity. Any non digit characters in the file count as a separators between numbers, but are otherwise ignored.

#!/usr/bin/python
"""Vibrator Beat Player

Usage: python beatplay.py [filename]
"""
import sys
import time
import re

def loadFromTextFile(filename):
    infile = open(filename)
    contents = infile.read()
    return re.findall("(\d+)\D*(\d+)", contents)

def playNote(frequency, duration):
    outfile.write(str(frequency) + "\n")
    time.sleep(float(duration) / 1000.0)

def playNotes(notes):
    for frequency, duration in notes:
        #print frequency + ", " + duration
        playNote(frequency, duration)

def playFile(filename):
    global outfile
    notes = loadFromTextFile(filename)
    outfile = open("/sys/class/leds/neo1973:vibrator/brightness", "w", 1)
    playNotes(notes)
    playNote(0, 0)
    outfile.close()

if __name__ == "__main__":
    playFile(sys.argv[1])

Example Beat

The following is an example "song" file that can be used to test the beat player.

125 400
0 200
250 600
0 400

125 400
0 200
250 600
0 400

125 400
0 200
250 600
0 400

125 400
0 200
250 600
0 400
Personal tools

Vibrator

This is in reference to the vibrator in the Neo Freerunner, however it is likely identical to the Neo 1973, as best I can tell.

Controlling

The vibrator is controlled through:

 /sys/class/leds/neo1973\:vibrator/brightness

When off, it will read 0. Valid ranges appear to be 0-255, with 255 being the fastest.

Python Script For Playing Beats

Reads beats from a file and plays them on the openmoko vibrator.

File format is human readable text, consisting of a simple sequence of integer pairs. The first number in the pair representing the intensity of the vibration from 0 to 255. The second number represents the duration in milliseconds to hold that intensity. Any non digit characters in the file count as a separators between numbers, but are otherwise ignored.

#!/usr/bin/python
"""Vibrator Beat Player

Usage: python beatplay.py [filename]
"""
import sys
import time
import re

def loadFromTextFile(filename):
    infile = open(filename)
    contents = infile.read()
    return re.findall("(\d+)\D*(\d+)", contents)

def playNote(frequency, duration):
    outfile.write(str(frequency) + "\n")
    time.sleep(float(duration) / 1000.0)

def playNotes(notes):
    for frequency, duration in notes:
        #print frequency + ", " + duration
        playNote(frequency, duration)

def playFile(filename):
    global outfile
    notes = loadFromTextFile(filename)
    outfile = open("/sys/class/leds/neo1973:vibrator/brightness", "w", 1)
    playNotes(notes)
    playNote(0, 0)
    outfile.close()

if __name__ == "__main__":
    playFile(sys.argv[1])

Example Beat

The following is an example "song" file that can be used to test the beat player.

125 400
0 200
250 600
0 400

125 400
0 200
250 600
0 400

125 400
0 200
250 600
0 400

125 400
0 200
250 600
0 400