add raspberry files

meetings/schedule.txt

@@ -28,3 +28,4 @@
 - 19.02.2014  Daniel Mende: ConfigParser
 - 26.03.2014  Discussion: Python Course, External Teacher (Pandas)
 - 09.04.2014  Luis Pedro Coelho: JUG - A Task Based Parallelization Framework
+- 07.05.2014  Holger Dinkel: Hacking Hardware with Raspberry Pi

users/dinkel/raspberry/GPIO/BlinkenPi.ipynb

+{
+ "metadata": {
+  "name": "BlinkenPi"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": "Import the GPIO module and set the board layout:"
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "import random\nimport time\nimport RPi.GPIO as GPIO\nGPIO.setmode(GPIO.BCM)",
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 25
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": "Initialize the Pins:"
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "red=27\nblue=18\nyellow=22\npins = [red,blue,yellow]\n\nGPIO.setup(red, GPIO.OUT)\nGPIO.setup(blue, GPIO.OUT)\nGPIO.setup(yellow, GPIO.OUT)\n\ndef turn_off():\n    for pin in pins:\n         GPIO.output(pin, False)\n\nturn_off()",
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 26
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": "Now switch the LEDs:"
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "GPIO.output(red, True)\nGPIO.output(yellow, False)\nGPIO.output(blue, True)",
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 27
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "for i in range(100):\n    pin = random.choice(pins)\n    mode = random.choice((True, False))\n    GPIO.output(pin, mode)\n    time.sleep(0.1)\nprint 'done'\nturn_off()",
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "done\n"
+      }
+     ],
+     "prompt_number": 28
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "",
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 28
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file

users/dinkel/raspberry/GPIO/BlinkenPi.py

+# -*- coding: utf-8 -*-
+# <nbformat>3.0</nbformat>
+
+# <markdowncell>
+
+# Import the GPIO module and set the board layout:
+
+# <codecell>
+
+import random
+import time
+import RPi.GPIO as GPIO
+GPIO.setmode(GPIO.BCM)
+
+# <markdowncell>
+
+# Initialize the Pins:
+
+# <codecell>
+
+red=27
+blue=18
+yellow=22
+pins = [red,blue,yellow]
+
+GPIO.setup(red, GPIO.OUT)
+GPIO.setup(blue, GPIO.OUT)
+GPIO.setup(yellow, GPIO.OUT)
+
+def turn_off():
+    for pin in pins:
+         GPIO.output(pin, False)
+
+turn_off()
+
+# <markdowncell>
+
+# Now switch the LEDs:
+
+# <codecell>
+
+GPIO.output(red, True)
+GPIO.output(yellow, False)
+GPIO.output(blue, True)
+
+# <codecell>
+
+for i in range(100):
+    pin = random.choice(pins)
+    mode = random.choice((True, False))
+    GPIO.output(pin, mode)
+    time.sleep(0.1)
+print 'done'
+turn_off()
+
+# <codecell>
+
+

users/dinkel/raspberry/GPIO/PiR.ipynb

+{
+ "metadata": {
+  "name": "PiR"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "import random\nimport time\nimport RPi.GPIO as GPIO\nGPIO.setmode(GPIO.BCM)",
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "red=27\npir=4\n\nGPIO.setup(red, GPIO.OUT)\nGPIO.setup(pir, GPIO.IN)\n\nGPIO.output(red, False)\n",
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": "*"
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "print 'start'\nfor i in range(100):\n    if GPIO.input(pir):\n        print \"detected!\"\n        GPIO.output(red, True)\n    time.sleep(1)\n    GPIO.output(red, False)\nprint 'end'",
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "start\ndetected!"
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "\ndetected!"
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "\ndetected!"
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "\ndetected!"
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "\ndetected!"
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "\ndetected!"
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "\ndetected!"
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "\ndetected!"
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "\ndetected!"
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "\ndetected!"
+      }
+     ],
+     "prompt_number": "*"
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "GPIO.output(red, False)",
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": "*"
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file

users/dinkel/raspberry/GPIO/PiR.py

+# -*- coding: utf-8 -*-
+# <nbformat>3.0</nbformat>
+
+# <codecell>
+
+import random
+import time
+import RPi.GPIO as GPIO
+GPIO.setmode(GPIO.BCM)
+
+# <codecell>
+
+red=27
+pir=4
+
+GPIO.setup(red, GPIO.OUT)
+GPIO.setup(pir, GPIO.IN)
+
+GPIO.output(red, False)
+
+# <codecell>
+
+print 'start'
+for i in range(100):
+    if GPIO.input(pir):
+        print "detected!"
+        GPIO.output(red, True)
+    time.sleep(1)
+    GPIO.output(red, False)
+print 'end'
+
+# <codecell>
+
+GPIO.output(red, False)
+

users/dinkel/raspberry/GPIO/readme.rst

+
+#. Get a Raspberry Pi
+#. Grab the NOOBS (New Out Of the Box Software) image at http://www.raspberrypi.org/downloads/ and put it on a SD card.
+#. Boot it & install Raspbian
+
+
+iPython setup:
+--------------
+
+#. Start iPython notebook::
+
+    ipython notebook  --no-browser --port=7777
+
+#. Create a ssh tunnel (pi's IP address here is 10.10.0.100)::
+
+    ssh -N -f -L localhost:7777:localhost:7777 pi@10.10.0.100
+
+#. Browse to the Ipython notebook at http://127.0.0.1:7777/