Do It Easy With ScienceProg

Short PC reinstall became long

Yesterday a friend asked to look at his old computer. He told that computer crashes randomly with Blue Screen of death (BSOD). He suspected to be an HDD problem due to bad sectors or so. He also wanted to save his pictures if nothing else can be done to make it work. Well, I took the PC for inspection. First of all, I tried to save photos – copy them to flash memory. Started up the computer and what you know – Antivirus software expired long ago, the virus is thriving. Found out that it is worm: Win32/Brontok@mm. From its description, I found that: Win32/Brontok is a family of mass-mailing e-mail worms. The worm spreads by sending a copy of itself as an e-mail attachment to e-mail addresses that it gathers from files on the infected computer. It can also copy itself to USB and pen drives. Win32/Brontok can disable antivirus and security software, immediately terminate certain applications, and cause Windows to restart immediately when certain applications run. The worm may also conduct denial of service (DoS) attacks against certain Web sites.

Pressure-less solar collector controller prototype

It’s been over three months since the solar collector was installed. I decided to build a controller by myself. And it turned out that it stayed in the prototype stage. So I put it into the enclosure and left it like is. So far, it works fine – water is hot every day, so I have nothing more to expect. I did not capture enough pictures of the build, but I think I will share what I have. In the forum thread, you probably saw what type of system I was building. As I mentioned, the solar collector is cheaply made in China and is pressureless. They usually come with a unique controller which takes care of the refilling tank, ensuring protection from water freezing and other individual scheduled routines. A pressureless collector usually is first filled with water which heats, and then it is used (mixed with cold). The initial test shows that when the collector is in direct sun, it boils what leads to heater elements’ calcification. Overall lifetime reduces and so efficiency.

Your Considerations When You Buy a Mobile Phone Signal Booster

You have concluded that you desperately need a mobile phone signal booster whose main goal is to help people get rid of bad quality cell phone perception forever. Great Popularity Because Of Effective Work Such devices have enjoyed great popularity with the development of mobile services. They make the quality signal better practically everywhere you wish – in a house, in a car or a truck, in an office building, etc. What is In a Set? This wonderful gadget consists of an external antenna, a signal booster amplifier, and an internal antenna. Still, sometimes, there are models where everything is packed in one unit, making it even more comfortable working. Do not Be Afraid of Doing it for the First Time In case it is your first time when you have to buy a mobile phone signal booster, here is some advice on what to pay attention to make the right choice ever.

Benefits of using multiturn potentiometers

Potentiometers are common electronics components that convert rotary or linear motion in to change of resistance. They can be found anywhere where some adjustments are needed, volume control, and joysticks. You can dive into the long theory about potentiometers, how they are made, what materials are used, and what output characteristics they have regarding rotation angle. As an electronics hobbyist and probably pro, you usually deal with two common types of potentiometers – standard pots with knobs and trim potentiometers. The first group of potentiometers is used where the user has to access the potentiometer when he needs to change one or another parameter like sound volume or screen brightness. They usually are more prominent in size and can be mounted vertically or horizontally to board. Also, they have a panel mount with the nut. This type of potentiometers needs to be mechanically stronger and resistive material more durable due to frequent use.

Cheap Arduino compatible boards are same as original

Probably you have noticed that Arduino is spread worldwide. It would be ridiculous to see one manufacturer producing them. The Arduino group produces an original board that is named Arduino. This is their trademark. But being an open-source product, Arduino has become popular in almost all workshops, so demand is enormous. Since building plans are public, other electronics manufacturers started building Arduino-compatible boards. These are the same Arduino boards but with Arduino’s name and logo removed. It is 100% compatible with standard Arduino that works with software tools, extensions, and modules.

How to Take Good ID Card Photographs

It’s no surprise that most people are reluctant to get their ID photos taken; the lack of creativity you can portray in your photos and the strict guidelines that you are required to adhere to can definitely make this a not-so-pleasant experience. However, getting our ID photos taken is something that we have to do, and so we might as well look good and get the best quality photo possible. There are numerous tips, tricks, and steps that you can implement to increase your photos’ quality and still ensure that you adhere to the strict guidelines. We’ll take a look at some of these below.

Building Your Own Computer

While buying a factory-built computer is quick and easy, there are many advantages to building your machine. For one thing, you are sure to get precisely the components, software, and functionality you need, versus what the manufacturer wants to give you. Another issue is that pre-made computers often have proprietary parts and cases, making them difficult to alter and upgrade; homemade machines are more flexible in that area. Finally, homemade computers can be significantly less expensive. Be sure to work in an area that’s free of dust and on a non-conductive surface, like a wooden table. You should also avoid working on carpeting, which can generate static electricity, and ground yourself by touching the computer case’s metal part before touching the components. You can also wear an antistatic wrist strap to prevent static electricity. Step 1: Set up the Motherboard · Remove the motherboard from its packaging and set it on a steady surface. Do not sit it on top of the antistatic bag that it came in. Fit the processor into the designated slot or socket on the motherboard. If it has a heat sink, it should come with a thermal adhesive for you to attach to the processor.…

Pushing prototyping with STM32F4Discovery to new level

STM32F4Discovery board is already quite powerful and stacked with many handy features. You can find a three-axis accelerometer, MEMS microphone, DAC with D class amplifier that can output sound through the built-in audio jack on a single board. Also, there are a couple of LEDs and a button for fast access. Of course, this board’s core is the STM32F407VGT6 ARM Cortex-M4 microcontroller that packs a series of great features, including DSP instructions and a floating-point unit. But eventually, with such power, you will miss several other handy features that could be used in your project. Think of LCD, Ethernet, RS232 interface, and even camera. You could start making your extension boards that include additional features, but why bother since several extension boards are available for it. Let us go through them and see the features you could get without a heating soldering iron.

The Benefits of LED Lighting

Throughout the world, we can see many renowned lighting experts endorsing the use of LED lighting. In fact, this advanced solid-state lighting technology has acquired a significant market share in such a short time that the world cites it as the next big thing in the lighting industry. But have you ever wondered what makes LED lighting such an attractive option? The truth is that advanced LED lights available to us today are particularly designed to maximize users’ comfort. The solid-state technology, which forms the basis of these lights, and the components used in their manufacturing are all designed to ensure that the user gets maximum benefit. As stated by the Infographic by Designerleds.com, “10 Benefits of switching to LED lighting”, LED lights are heralding brighter dawn for lighting solutions, with several benefits stemming from their energy efficiency and clean, eco-friendly design. This prudent designing and manufacturing of these lights make them stand out from the crowd by offering unmatched perks, which were never offered by any other lighting technology in the past. Let’s take a look at a few benefits of LED lighting:

Agile Web Development with Ruby on Rails

Ruby on Rails (also known as RoR or simply Rails) is an object-oriented, multi-level, full-stack framework running via Ruby’s programming language. Many web developers choose to work in Ruby on Rails due to its numerous advantages. Why do developers love RoR? The best-known advantage of Ruby on Rails web development is the speed. A variety of handy instruments and Ruby’s support on the Rails community increase development speed by about 30-40%. With Ruby on Rails, you get excellent built-in testing, caching, localization, validation, and deployment tools. And that’s not it. You also get an opportunity to customize the routing and titles of the website sections so that your projects always have simple and beautiful URLs. The database migration process is perfect in Rails. The database structure always stays in the repository, and every change in structure gets instantly documented.