Month: February 2017

GitHub – scheckmedia/CameraControllerApi

Jovan Stosic February 22, 2017

CameraControllerApi

The CameraControlerApi is an attempt to control a DSLR via REST functionality. At the moment is it possible to change the camera settings (ISO, aperture, time), take pictures and stream the live view of the camera (only tested with a Nikon D90).

Web-Interface

http://device_ip:port/webif/

Demonstration

a demonstration for the CameraControlerApi

How to use

You will get all valid data for a command from the “list” action.

Settings

List the configuration with validate values

http://device_ip:port/settings?action=list

ISO

http://device_ip:port/settings?action=iso&value=200

Aperture

http://device_ip:port/settings?action=aperture&value=f/22

Shutter Speed

http://device_ip:port/settings?action=speed&value=1/1000

Whitebalance

http://device_ip:port/settings?action=whitebalance&value=Cloudy

Capture

take a picture

http://device_ip:port/capture?action=shot

autofocus

http://device_ip:port/capture?action=autofocus

File system

list of the available images on camera

http://device_ip:port/fs?action=list

get an image

http://device_ip:port/fs?action=get&value=filename.jpg&path=/path/to/file

Each method will response with a JSON file. If you want a XML response you have to put the command “&type=xml” on the end of the upper commands

Live View

live view will be generated as mjpeg-stream. you can easy implement this stream in html inside an image tag e.g:

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Live View</title>
</head>

<body>
<img src="https://localhost:8888/liveview" />
</body>

</html>

Dependencies

apt-get install libboost-dev libboost-system-dev libmicrohttpd-dev libgphoto2-dev libexiv2-dev

  • libgphoto
  • libboost
  • libboost-system
  • libmicrohttpd
  • libexiv2

Source: GitHub – scheckmedia/CameraControllerApi

GitHub – scheckmedia/CameraControllerApi was last modified: July 13th, 2017 by Jovan Stosic

Xcas

Jovan Stosic February 22, 2017

Xcas is a user interface to Giac, a free, basic Computer Algebra System (CAS) for Windows, macOS and Linux/Unix. Giac can be used directly inside other C++ programs. Xcas/Giac is an open-source project developed by Bernard Parisse’s et al. at the Joseph Fourier University of Grenoble (Isère) since 2000. It is based on experiences gained with Parisse’s former project Erable. Giac has a compatibility mode with Maple and MuPAD software and TI-89, TI-92 and Voyage 200 calculators. Users can use Giac/Xcas as

Source: Xcas – Wikipedia

Xcas was last modified: September 25th, 2017 by Jovan Stosic

Android devices will soon run Windows software thanks to CrossOver and Wine | PCWorld

Jovan Stosic February 22, 2017

Android devices will soon run Windows software thanks to CrossOver and WineCrossOver and Wine have long been famous for helping Windows software run on Linux, and now they’re coming to Android.

Source: Android devices will soon run Windows software thanks to CrossOver and Wine | PCWorld

Android devices will soon run Windows software thanks to CrossOver and Wine | PCWorld was last modified: July 13th, 2017 by Jovan Stosic

Comparison of Texas Instruments graphing calculators

Jovan Stosic February 22, 2017

A graphing calculator is a class of hand-held calculator that is capable of plotting graphs and solving complex functions. There are several companies that manufacture models of graphing calculators. Texas Instruments is a major manufacturer. The following table compares general and technical information for a selection of common and uncommon Texas Instruments graphing calculators. See the individual calculators’ articles for further information.

Source: Comparison of Texas Instruments graphing calculators – Wikipedia

Comparison of Texas Instruments graphing calculators was last modified: September 25th, 2017 by Jovan Stosic

Comparison of HP graphing calculators

Jovan Stosic February 22, 2017

A graphing calculator is a class of hand-held calculator that is capable of plotting graphs and solving complex functions. While there are several companies that manufacture models of graphing calculators, Hewlett-Packard is a major manufacturer. The following table compares general and technical information for a selection of common and uncommon Hewlett-Packard graphing calculators. See the individual calculators’ articles for further information.

Source: Comparison of HP graphing calculators – Wikipedia

Comparison of HP graphing calculators was last modified: September 25th, 2017 by Jovan Stosic

Top 10 Scientific Calculators | eBay

Jovan Stosic February 22, 2017

It may seem like your iPhone or Galaxy S7 is good for just about any task these days, but any mechanical engineering student, physics major or scientist might beg to differ. This type of machine is designed specifically to calculate programs and graph data in science, engineering and mathematics. Scientific calculators are still a big draw in secondary and higher education, in addition to the workplace. The top calculators handle complex functions, are comfortable and portable. They can be so specialized that you’ll rarely find one at a campus bookstore. We take a look at 10 great models that offer functionality and programmable features.  Scientific calculators are available at office supply stores, bookstores, variety stores or online, at marketplaces such as eBay.

1 Texas Instruments TI-84 Plus Graphing Calculator

Texas Instruments touts their TI-84 Plus Graphing Calculator as “perhaps the best-selling calculator of all time.” Indeed, it has thousands of reviews on the Internet, most of which are largely positive. This calculator comes with USB technology to share files with other computers, whether they are laptops or other scientific calculators. It also has pre-loaded apps, but with the capability of adding any TI-83 apps. The Texas Instruments TI-84 Plus Graphing Calculator should be suitable for students of science, finance, and other subjects that require advanced calculations. It is not solar-powered like many other calculators; instead, it takes AAA batteries and has a silver oxide battery as a backup.

2 Texas Instruments TI-30Xa Scientific Calculator

The TI-30Xa Scientific Calculator is a basic model that performs trigonometric functions, logarithms, roots, powers, reciprocals, and factorials. The buyer sacrifices a plethora of features by prioritizing price, but this calculator may be more than enough machine depending on its intended use.

3 Texas Instruments TI-83 Plus Graphing Calculator

Before it was outshone by the TI-84, the Texas Instruments TI-83 Plus Graphing Calculator dominated the scientific calculator market. It was often and highly recommended to students as the ultimate calculator for just about any need. It’s accepted for use in all standardized testing, and is great for trigonometry and algebra. It has an upgradeable operating system and software.

4 Sharp EL-W516B Scientific Calculator

The Sharp EL-W516B is a relatively inexpensive scientific calculator, with a large four-line LCD display and programmable keys.  This model has hundreds of features, including more than 530 scientific programs and programmable macro keys. Its reviews are largely positive, with some customers singing the product’s praise after nearly a decade of use.

5 HP 35s Scientific Calculator

The HP 35s Scientific Calculator is recommended by about 86 percent of people who review it. It has significantly fewer features than more expensive scientific calculators since HP designed it to commemorate its iconic H35 calculator from decades before. Simple in appearance, it’s an able performer with keystroke programmability. Some people report it is not easy to read, which could potentially be a problem for users with poor vision.

6 HP 50g Graphing Calculator

Used by students and engineers, the HP50g Graphing Calculator sports a large, bright display rarely seen on regular scientific calculators. It is capable of vector operations, in addition to graphic, statistical, and electronic specifications. Although it is well reviewed, some users find its documentation lacking. The HP50g has a large equation library and over 2,300 built-in functions for geometry and math.

7 Texas Instruments Voyage 200 Calculator

As one of Texas Instruments’ premium products, the Voyage 200 Calculator features a QWERTY keyboard and large LCD screen. The product is incredibly customizable, letting users calculate advanced math problems or even use applications to turn it into a flashcard device for foreign language, history or English classes. Students who want a high-quality calculator that is useful for just about any class can benefit from buying the Voyage 200.

8 Texas Instruments TI-36X Pro Scientific Calculator

The Texas Instruments TI36X Pro is a scientific calculator for middle school to college students; more specifically, it is best for basic algebra up to college calculus. The unit is solar powered, so the student need not worry about batteries of any kind. The display may be difficult to read when lying on a desk, according to some descriptions of the product, so it is not well-suited for graphing functions.

9 Sharp QS-2122H 12-Digit Commercial Desktop Calculator

Although technically a scientific calculator, Sharp’s QS-2122H 12-Digit Commercial Desktop Calculator is largely designed for business. It is capable of easing the calculations of markups, margins, and percent changes. Overall, it is a simple calculator with a clear display.

10 TI-30XS MultiView Scientific Calculator

The TI-30XS MultiView Scientific Calculator is another inexpensive machine. Buyers are pleased with its ability to show variations of the same answer and previous answers. It is a non-graphing scientific calculator with a solar display. It is nowhere near as feature laden as the TI-83 or TI-84, but it should be sufficient for middle to high school students. Some buyers are dissatisfied with its simplicity. For example, it might not be suitable for an advanced high school math or physics class.

How to Buy Scientific Calculators on eBay

To buy scientific calculators on eBay, navigate to any page on the site. Look for the search bar and enter keywords relevant to the kind of calculator you seek. As an example, you can start with “engineer LCD scientific calculator” or ” basic scientific calculator.” Narrow the results by selecting a price range, restricting the search geographically, or adjusting another of eBay’s many options. If you know exactly what you’re looking fro, you can search that way, for instance “black TI-89” or “Casio FX-115ES.” Upon finding a calculator in your price range, read the description to ensure it has your desired features. Some advanced calculators have more than 300 functions, so it may help to use important features as keywords if you have difficulty finding the right calculator.

The shipping and handling costs of a calculator usually vary depending on weight. If the seller offers insurance, consider paying for this add-on, especially if the calculator is expensive. This way, you have more options should it break or get lost in the mail.

Scientific Calculator Overview

Most of the best-selling calculators are sold by a few companies: Texas Instruments, Sharp, and HP. Despite this, there is a lot of variety among the top 10 scientific calculators.

Calculator

Pros

Cons
Texas Instruments TI-84 Plus Graphing Calculator Hundreds of applications

Backup battery

Flash drive capable

 Price

Possibly banned in some schools
Texas Instruments Scientific Calculator Inexpensive

Ideal for middle to high school students on a budget

 Simple machine not meant for advanced calculations often seen in college courses
Texas Instruments TI-83 Plus Graphing Calculator Hundreds of applications

Very popular and well documented

 Price

Possibly banned in some schools
Sharp EL-W516B Scientific Calculator Inexpensive

Has similar functions to more expensive calculators

 Sometimes slow to perform
HP 35S Scientific Calculator Inexpensive

Ideal for middle to high school students

 Display may be difficult to read
HP 50G Graphing Calculator Advanced calculator

Large and bright display

 Instructions may be lacking
Texas Instruments Voyage 200 Calculator QWERTY keyboard

Customizable

Usable in non-math class

 Price
Texas Instruments TI36X Solar Scientific Calculator Inexpensive

Solar battery

 Display may be difficult to read

Simple calculator best for middle to high school students
Sharp QS-2122H 12-Digit Commercial Desktop Calculator Designed for business calculations

Clear display

 Possibly lacking functions needed for advanced math and physics courses
TI-30XS Multiview Calculator Inexpensive

Solar battery

 Simple calculator that may not be suited for college courses

Buyers should always ensure a scientific calculator has every feature they need before finalizing the purchase. These are all very different from each other, both in appearance and capabilities.

Conclusion

The best calculator depends on its intended use. Students should consult their teachers before buying a calculator. Scientific calculators can be quite the investment, but some schools ban specific calculators because they either make solving problems too easy, or they are capable of loading questionable applications through USB drives.

When browsing the top scientific calculators, shoppers must pay attention to the reviews and price of the calculator, in addition to its capabilities. It is possible to buy too much machine, meaning its abilities tend to go unused, and the buyer could have saved money by buying a lesser calculator. When in doubt, shoppers should consider ask for recommendations from their coworkers or instructors. Both new and used scientific calculators are available for purchase on eBay.

Source: Top 10 Scientific Calculators | eBay

Top 10 Scientific Calculators | eBay was last modified: July 13th, 2017 by Jovan Stosic

Topic: How to fully Backup my site « WordPress.org Forums

Jovan Stosic February 22, 2017

Hi Guys, i wanted to know how i can make a FULL backup of my wordpress sites. This includes the themes, the layouts, configurations, options that i changed in the theme as well as ll of the product, and setting i have changed for woocommerce. So basically if one day my hosting was to fail and i needed to change host etc… i want to know if i can make a backup that will allow me to go on any server and just simply upload the files and the website is back to where it was again. Is this possible? If so can yo

Source: Topic: How to fully Backup my site « WordPress.org Forums

Topic: How to fully Backup my site « WordPress.org Forums was last modified: July 13th, 2017 by Jovan Stosic

Upgrading Optiplex 745 – [Solved] – CPUs – Tom’s Hardware

Jovan Stosic February 22, 2017

Hello There Tom’s Hardware Community.Well ill Just give a brief intro about me .My Name is HussamIm a moderator on other website . I will not discuss it here . I know that is called Advertisement.Ok Coming to my point.I have a dell Optiplex 745 950 @ 3.4 GHz ; Pentium D { I know a bit old :P}. Recently i was checking threads about up-gradation of Optiplex 745 and was excited to see that some people suggested Q6600-6700 Quad Core .Therefore , My question is can we really up-grade it to Core 2 Quad Processor ? (Q6600-6700).My PC FSB max Speed is 1066 MHz

Source: Upgrading Optiplex 745 – [Solved] – CPUs – Tom’s Hardware

Upgrading Optiplex 745 – [Solved] – CPUs – Tom’s Hardware was last modified: July 13th, 2017 by Jovan Stosic