06 Oct 2012

free & cheap ebooks | MetaFilter

Books on the Knob, Pixel of Ink, and iReader Review are three blogs that feature free & bargain ebooks daily. If you want to start simple there’s OpenCulture’s 375 Free eBooks list but if you don’t mind doing some footwork then there’s this very comprehensive 614 Places for Free eBooks Online post (with divisions of content by genre) on Gizmo’s Freeware.

more sites featuring free & cheap ebooks:

*ManyBooks

*Feedbooks (free public domain & original books)

*Daily Cheap Reads (UK edition)

*AddAll ebooks

*eReaderIQ

*Bargain eBook Hunter

*Free Kindle Books and Tips

*Kindle Nation Daily

*Bargain eBooks

*Book Depository

*for romance readers, both Dear Author and Smart Bitches, Trashy Books feature regular deal posts

*and of course there’s always the Baen Free Library

Not to mention the granddaddy of them all, easy to ignore because it’s been around so long: Gutenberg

Also: Openlibrary.org

For those with iDevices, there’s always the Free Books app

via free & cheap ebooks | MetaFilter.

02 Oct 2012

JavaScript Code Quality Tools Validator/Checker

JSLint,The JavaScript Code Quality Tool.

JSHint,A JavaScript Code Quality Tool.

Closure Compiler Service.

The Online Lint.

26 Sep 2012

Mp3tag – the free universal Tag Editor ID3v2, MP4, OGG, FLAC, …

Mp3tag is a powerful and yet easy-to-use tool to edit metadata of common audio formats where it supports ID3v1, ID3v2.3, ID3v2.4, iTunes MP4, WMA, Vorbis Comments and APE Tags.

via Mp3tag – the universal Tag Editor ID3v2, MP4, OGG, FLAC, ….

Note: Don’t use ID3v2.4 as is causes issues with Windows Media Player and possible other players.

23 Sep 2012

Create Bingo Cards in Excel

Create Bingo Cards in Excel

BingoCard_101.pdf (10 unique bingo cards)

BingoCard_101.xls (if you need to print more then 10)

via Create Bingo Cards in Excel « Contextures Blog.

BingoCard_visually_impaired.pdf

23 Sep 2012

USBPIC Microcontroller Boards

USBPIC Boards and Software

  1. TRANS: Eight TO220 FET open drain drivers;

  2. MATRIX: Sixteen medium power drivers, using ULN2803 or UDN2982 chips;

  3. HBSW: Four TO220 FETs and one L298 (2-channel) H-bridge chip.

via USBPIC Board Documentation.

21 Sep 2012

TP-Link TL-WR703N – OpenWrt Mini Router Home Automation

The TL-WR703N is marketed as a “3G travel router”. It does not include a 3G modem – it simply means that the OEM firmware supports USB 3G modems, and that the oem firmware contains drivers for USB modems! Ridiculous, since with OpenWrt ANY router with USB supports 3G hardware… ;-)

via TP-Link TL-WR703N – OpenWrt Wiki.

19 Sep 2012

2 Channel USB/Wireless 5V Relay Module Bluetooth Remote Control Kit

2 Channel USB/Wireless 5V Relay Module Bluetooth Remote Control Kit

via 2 Channel USB/Wireless 5V Relay Module Bluetooth Remote Control Kit.

27 Aug 2012

23 Mathematical Challenges

Mathematical Challenge 1: The Mathematics of the Brain

Develop a mathematical theory to build a functional model of the brain that is mathematically consistent and predictive rather than merely biologically inspired.

Mathematical Challenge 2: The Dynamics of Networks

Develop the high-dimensional mathematics needed to accurately model and predict behavior in large-scale distributed networks that evolve over time occurring in communication, biology and the social sciences.

Mathematical Challenge 3: Capture and Harness Stochasticity in Nature

Address Mumford’s call for new mathematics for the 21st century. Develop methods that capture persistence in stochastic environments.

Mathematical Challenge 4: 21st Century Fluids

Classical fluid dynamics and the Navier-Stokes Equation were extraordinarily successful in obtaining quantitative understanding of shock waves, turbulence and solitons, but new methods are needed to tackle complex fluids such as foams, suspensions, gels and liquid crystals.

Mathematical Challenge 5: Biological Quantum Field Theory

Quantum and statistical methods have had great success modeling virus evolution. Can such techniques be used to model more complex systems such as bacteria? Can these techniques be used to control pathogen evolution?

Mathematical Challenge 6: Computational Duality

Duality in mathematics has been a profound tool for theoretical understanding. Can it be extended to develop principled computational techniques where duality and geometry are the basis for novel algorithms?

Mathematical Challenge 7: Occam’s Razor in Many Dimensions

As data collection increases can we “do more with less” by finding lower bounds for sensing complexity in systems? This is related to questions about entropy maximization algorithms.

Mathematical Challenge 8: Beyond Convex Optimization

Can linear algebra be replaced by algebraic geometry in a systematic way?

Mathematical Challenge 9: What are the Physical Consequences of Perelman’s Proof of Thurston’s Geometrization Theorem?

Can profound theoretical advances in understanding three dimensions be applied to construct and manipulate structures across scales to fabricate novel materials?

Mathematical Challenge 10: Algorithmic Origami and Biology

Build a stronger mathematical theory for isometric and rigid embedding that can give insight into protein folding.

Mathematical Challenge 11: Optimal Nanostructures

Develop new mathematics for constructing optimal globally symmetric structures by following simple local rules via the process of nanoscale self-assembly.

Mathematical Challenge 12: The Mathematics of Quantum Computing, Algorithms, and Entanglement

In the last century we learned how quantum phenomena shape our world. In the coming century we need to develop the mathematics required to control the quantum world.

Mathematical Challenge 13: Creating a Game Theory that Scales

What new scalable mathematics is needed to replace the traditional Partial Differential Equations (PDE) approach to differential games?

Mathematical Challenge 14: An Information Theory for Virus Evolution

Can Shannon’s theory shed light on this fundamental area of biology?

Mathematical Challenge 15: The Geometry of Genome Space

What notion of distance is needed to incorporate biological utility?

Mathematical Challenge 16: What are the Symmetries and Action Principles for Biology?

Extend our understanding of symmetries and action principles in biology along the lines of classical thermodynamics, to include important biological concepts such as robustness, modularity, evolvability, and variability.

Mathematical Challenge 17: Geometric Langlands and Quantum Physics

How does the Langlands program, which originated in number theory and representation theory, explain the fundamental symmetries of physics? And vice versa?

Mathematical Challenge 18: Arithmetic Langlands, Topology and Geometry

What is the role of homotopy theory in the classical, geometric and quantum Langlands programs?

Mathematical Challenge 19: Settle the Riemann Hypothesis

The Holy Grail of number theory.

Mathematical Challenge 20: Computation at Scale

How can we develop asymptotics for a world with massively many degrees of freedom?

Mathematical Challenge 21: Settle the Hodge Conjecture

This conjecture in algebraic geometry is a metaphor for transforming transcendental computations into algebraic ones.

Mathematical Challenge 22: Settle the Smooth Poincare Conjecture in Dimension 4

What are the implications for space-time and cosmology? And might the answer unlock the secret of “dark energy”?

Mathematical Challenge 23: What are the Fundamental Laws of Biology?

This question will remain front and center in the next 100 years. This challenge is placed last, as finding these laws will undoubtedly require the mathematics developed in answering several of the questions listed above.

via 23 Mathematical Challenges.

27 Aug 2012

pwnieexpress/Raspberry-Pwn · GitHub

pwnieexpress/Raspberry-Pwn · GitHub.

02 Aug 2012

No Excuse List

The best place on the web to learn anything, free.

via No Excuse List.

18 Jul 2012

Common Crawl – Open Spider Crawl

Common Crawl is a non-profit foundation dedicated to building and maintaining an open crawl of the web, thereby enabling a new wave of innovation, education and research.

via Common Crawl.

11 Jul 2012

Trimble/Google Sketchup Used for Reprap CAD Design

Sketchup is pretty handy for Reprap design once you install:

08 Jul 2012

3ders.org – price compare 3D printers

3ders.org – price compare 3D printers.

02 Jul 2012

Reprap Prusa i3

<img src="/notes/wp-content/uploads/2012/06/i3-300x224.jpg" alt=" title=“prusa i3 overall” width=“300” height=“224” class=“alignnone size-medium wp-image-1445” srcset="/notes/wp-content/uploads/2012/06/i3-300x224.jpg 300w, /notes/wp-content/uploads/2012/06/i3-1024x764.jpg 1024w" sizes="(max-width: 300px) 100vw, 300px" />]1

<img src="/notes/wp-content/uploads/2012/06/mockup-300x224.jpg" alt=" title=“prusa i3 mockup” width=“300” height=“224” class=“alignnone size-medium wp-image-1446” srcset="/notes/wp-content/uploads/2012/06/mockup-300x224.jpg 300w, /notes/wp-content/uploads/2012/06/mockup.jpg 1000w" sizes="(max-width: 300px) 100vw, 300px" />

<img src="/notes/wp-content/uploads/2012/06/yaxis-224x300.jpg" alt=" title=“prusa i3 yaxis” width=“224” height=“300” class=“alignnone size-medium wp-image-1447” srcset="/notes/wp-content/uploads/2012/06/yaxis-224x300.jpg 224w, /notes/wp-content/uploads/2012/06/yaxis.jpg 598w" sizes="(max-width: 224px) 100vw, 224px" />

20 Jun 2012

'Windows Firewall: How to Unblock Outgoing Connections From Flash Player Plugin'

If you have the Windows firewall blocking all unauthorized outgoing connections, some Flash content doesn’t work properly.

  1. Start “Windows Firewall With Advanced Security” as an administrator
  2. Create a new Outbound Rule and allow the following program file: C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerPlugin_11_3_300_257.exe Filename may vary depending on Flash and Windows version.

18 Jun 2012

An open source implementation of Xbox KinectFusion – Point Cloud Library

https://www.youtube.com/watch?v=quGhaggn3cQ

via An open source implementation of Xbox KinectFusion – Point Cloud Library 3D Scanning.

18 Jun 2012

How to Make a Silver Coin Ring – Washington Quarter Style – YouTube

https://www.youtube.com/watch?v=yOWkwUqzqPk

18 Jun 2012

SHA-1 Salted Hash

SHA-1 hash of password “supersecret$f2%38h##f23” is “33438b91ce09e6959232f698b7939e6ee1d0712a”

Should you use randomly generated password + salt for each visitor?

31 May 2012

DIY Open Source Submarine

OPENROV

OpenROV is a
 Do It Yourself telerobotics community centered around underwater exploration and education. We have developed a low-cost telerobotic submarine that can be built with mostly off-the-shelf parts.
The goal of OpenROV is to democratize exploration by allowing anyone to explore and study underwater environments.

31 May 2012

Windows Default Programs Editor

Note: run as Administrator.

Default Programs Editor makes it easy to fix file association settings in Windows, including context menu items, icons, and descriptions. Also: auto-play settings and default programs settings …all without fiddling around in the registry.

Download Default Programs Editor.