veproza

Getting u-blox MAX-7C GPS to work with Assisted A-GPS

So you got your u-blox GPS and wired it up only to look at it struggling to get a valid fix? Under less than ideal conditions, it can take a better part of half an hour. That's because unlike your smartphone GPS, it doesn't have the luxury of having downloaded all the auxiliary navigation data (almanacs and the lot) out-of-band, via fast mobile connection. Instead it relies on the satellite's signal itself, which is being transmitted to you at meager 50 bits per second (I'm not missing "kilo" there, it's three orders of magnitude slower than your 2G GPRS connection).

Luckily, the u-blox receivers are fitted with what the company calls "AssistNow" capability and it does exactly the same thing your iPhone does - feeds the GPS with pre-downloaded almanacs, speeding up the acquisition process to mere seconds.

In principle, the process looks easy enough - we just need to download the data, and then push them to the receiver. Sadly, the AssistNow documentat

sayanee

1. If using Raspbian Wheezy, then upgrade to Jessie with these instructions.

• Install nvm with curl command
• Install iojs with nvm: nvm install iojs
• revert to Wheezy in Step 1
• install Chromium with sudo apt-get install chromium

skyl

#!/System/Library/Frameworks/Ruby.framework/Versions/Current/usr/bin/ruby

# SET YOUR_HOME TO THE ABSOLUTE PATH OF YOUR HOME DIRECTORY
# chmod +x install.rb
# ./install.rb
YOUR_HOME = ''

HOMEBREW_PREFIX = "#{YOUR_HOME}/usr/local"
HOMEBREW_CACHE = '/Library/Caches/Homebrew'
HOMEBREW_REPO = 'https://github.com/Homebrew/homebrew'

porjo

Convert sequence of JPEG images to MP4 video

Simple glob:

ffmpeg -r 24 -i '*.JPG' -s hd1080 -vcodec libx264 timelapse.mp4

Start from DSC_0079.JPG

ffmpeg -r 24 -f image2 -start_number 79 -i DSC_%04d.JPG -s hd1080 -vcodec libx264 timelapse2.mp4

jussi-kalliokoski

var context = new AudioContext();
var sineWorker = context.createAudioWorker("worker.js");

function createSineNode (frequency) {
    var node = context.createAudioWorkerNode(sineWorker, {
        numberOfInputChannels: 0,
        numberOfOutputChannels: 1,
        parameters: {
            frequency: frequency || 440,
        },

whichlight

If I'm talking about participatory and interactive art, we've got to do some demos together. Not sure how this will turn out, but that's part of the fun. Turn the sound up, maybe lock your screen orientation, and check these out:

1. bubblegum postcard - mobile or laptop
2. dancey dots - mobile or laptop
3. cellular - mobile only

yay arpegiattor

1. sounds for spring - mobile or laptop

jsantell

Moved to https://wiki.mozilla.org/DevTools/WebAudio

Originally from etherpad

The Web Audio Editor in Firefox Developer Tools is still a work in progress. A lot of love is needed in its current state, and once the basic features are working, here are some dream features, and future planning.

Milestones

• Fx31 - Prototype, img
• Fx32 - Release

prantlf

// Checks if the actual object is an instance of the expected type;
// the functional object `expected` can be any ancestor prototype.
//
// Example:
//     expects(new Backbone.Model()).toBeInstanceOf(Backbone.Model);
jasmine.Matchers.prototype.toBeInstanceOf = function(expected) {
  var actual = this.actual,
      notText = this.isNot ? ' not' : '';
  this.message = function() {
    return 'Expected ' + actual + notText + ' to be an instance of ' + expected;

0xabad1dea

Sorry, RSA, I'm just not buying it

I want to be extremely clear about three things. First, this is my personal opinion – insert full standard disclaimer. Second, this is not a condemnation of everyone at RSA, present and past. I assume most of them are pretty okay, and that the problem is confined to a few specific points in the company. However, “unknown problem people making major decisions at RSA” is a bit unwieldy, so I will just say RSA. Third, I'm not calling for a total boycott on RSA. I work almost literally across the street from them and I don’t want to get beat up by roving gangs of cryptographers at the local Chipotle.

RSA's denial published last night is utter codswallop that denies pretty much everything in the world except the actual allegations put forth by Reuters and hinted at for months by [other sources](http://li

kirb

/**
 * Download all WWDC videos and PDFs
 * by kirb <http://hbang.ws> / GPLv3 licensed <http://hbang.ws/s/gpl>
 *
 * Go to <https://developer.apple.com/wwdc/videos> and run this in your JavaScript console
 * (option-cmd-i on OS X; F12 on Windows)
 * 
 * Set hd = true if you want HD videos instead of SD (WARNING: will use a large amount of data)
 * 
 * Make sure wget is installed too - it isn't by default for most OSes. You could also change