Overview of Raspberry Pi 3: More Great Performance for $ 42.99

The third version of the micro-computer Raspberry Pi pleased their fans high-performance, advanced features and is still affordable price.

Externally, the box Raspberry Pi 3 differs from previous versions of the packages only inscriptions on the reverse side and the logos of the wireless interfaces. Inside - board in an antistatic bag and a couple of pieces of paper (information about the device and instructions for the first call).

New "Malinka" is almost completely repeats the previous version (except that the first was unsoldered analog video output, but in the third model, as in the second, it is implemented through the 4-pin 3.5 mm mini-jack).

Small differences can be seen if you look closely. Pay a little bit compared to rearrange the latest revision of the second version of Raspberry Pi, and all in order to place a tiny antenna Wi-Fi and Bluetooth. The most important change in the Raspberry Pi 3 was the new 64-bit platform from Broadcom with a higher frequency (1 200MHz vs. 900MHz). Unfortunately, users only see the increased frequency. 64-bit instruction set is not implemented. Since the core of the SoC system all built on the same ARMv7 architecture does not require a separate kernel - it is possible to use the system from the Raspberry Pi 2(will not work on the first version: it is based on the ARMv6). To understand the performance: CPU on the same basis Cortex-A53 smartphones are set to the primary and secondary levels.

Another important point for users has been the emergence of wireless interfaces soldered onto the motherboard. This will save on the purchase of individual sticks 5-15 dollars. It works with two types of Bluetooth 4.1: Classic and Low Energy. This will work with almost any peripherals, including headsets, keyboards, computer mice and home media systems.

BTW, you can select the Raspberry Pi 3 at Banggood. Besides, you can easily get other electrical accessories (e.g. DC-DC Step Down Module) there with high quality and reasonable prices.

Handheld Cooler for Hot Summer

If you experience discomfort while traveling by car, suffocated in a crowded subway car or bus, are planning a long trip in the summer on a train or bus, the compact road fan on batteries will be a lifeline in the ocean heat. The small size of the device (its standard length - only 15 cm and base diameter of about 3 cm) allow you to use in very tight spaces. Fans, magazines and newspapers are now things of the past, because even very old people say the convenience of a battery-powered fan. About him, and describe in detail in our

Many mothers dream to buy a manual fan on batteries for their kids, but are worried about their safety. Tiny restless keenly interested in any item that appeared in their visual field, especially in such an unusual, like a fan. Of course, leaving the child alone with the appliance should not be working, but in the presence of adults its use is permissible. The blades are made of very soft silicone, providing a random hit the hand or other body part under running fan. Therefore, even if you happen to touch them, you will not get injuries.

Also on sale are models with spray. The difference between them lies in the material of the blades - they are made ​​of a soft sponge through the pores of the reservoir where the water is injected (boiled, mineral or thermal). This fan is running turns the liquid into the smallest puff of dew comfortable temperature, which cools the skin perfectly, even in extreme heat. You do not know what to give to a child or an old woman? A portable handheld air conditioner will be the best gift for the summer! BTW, you can select these fans at Banggood. Besides, you can easily get other electrical accessories (e.g. keychain nail clippers) there with high quality and reasonable prices.

How to Differentiate the Multimeters and Where to Select

In the modern sense, the multimeter can be called a multifunction device for electronic measuring work. Each device has a standard set of measurements performed. It can be attributed measurement of current, voltage and resistance. The number of other functions is depending on the model.

Multimeter is called electron-measuring instrument that combines several functions simultaneously. Also in this unit, there is a wide range of measurements. Multimeter often referred to as the instrument has an ammeter, voltmeter and ohmmeter. Masters gave the instrument another name - a tester. In modern machine can be a lot of functions, and this assembly is at a minimum is extremely rare.

There are two types of electron-meter - analog and digital. If the information is displayed on the digital display, this is digital multimeter. If we have to be familiar with the scale of the arrow, then it’s analog. The most relevant instruments are currently in a digital version. However, analog versions do not lose their popularity, despite the rapid development of technology. BTW, you can select the digital multimeter (e.g. VC99 multimeter) at Banggood. Besides, you can easily get other Electrical Measuring Tools (e.g. mini hygrometer) there with high quality and reasonable prices.

Modern instruments differ in its versatility. Choose the desired device is not in the cellar, because the species multimeters unlimited number. Each device has a standard set of measurements - current, resistance and voltage. You can measure capacitance, frequency, temperature, inductance, and more with this apparatus. The multimeter may be used for testing semiconductor devices, and also for generating test signals. The modern instrument is used also as an oscilloscope, which is reflected on the display waveform. In addition, modern multimeter can be connected to your computer and transfer the measurement performance on the screen. The appearance of the meter may be different. It all depends on the specific model.

Small Fans, What We Must Have in Hot Summer

Small fans are we need in a variety of situations - in the car, in the office, on vacation. Since their invention, mankind began to live more comfortably. Produce and implement them with great success, even given the fact that we live in an age of high technology, when the air conditioner in the car and home - are not uncommon. About what are mini-fans and what their characteristics - we discuss in this article.

USB-fans (e.g. USB tower fan) can be of several kinds - desktop, on a flexible stem and clothespin. The principle of operation of any of them is powered by computer USB port or notebook. Required voltage - only 5 the V, they consume very little power, while not bad blown and bring relief to the hot weather. Today, they are the best-selling gadgets, along with USB-lamps. They are good save energy and bring invaluable in many situations. For example, the fans on the flexible leg may be used to cool laptop, beech, since the airflow can be directed in any direction.

Another type of mini-fans is rechargeable Soup running as easy to guess, from a battery or a rechargeable battery. They are absolutely not tied to the mains or to the computing devices. Full portability allows you to take with a desktop mini fan with batteries in any journey - by car, train, bus and enjoy the coolness even on the beach, even in traffic.

Portable devices of this type are very comfortable and functional. They are carried out in an interesting design, their cost is low. So they become the owner of such a device is very convenient just lately. Mini Fan with batteries and clothespin can be installed in the car, and it will give a little cool in the heat of the day. But a soft and safe blade, so that an accidental tip-over, nothing threatens your health. BTW, you can select the small fans at Banggood. Besides, you can easily get other electronic accessories (e.g. RFID copier) there with high quality and reasonable prices.

Must-Have Wire Stripping Knife for Electrical Events

The electrical events are particularly important precision and accuracy in the processing of materials. Quality conductive element is caused by the connection and the absence of defects on the line. Experience shows that a considerable part of problems in network communication of this type occurs precisely because of making mistakes in installation. The key to the quality of work is the use of appropriate tools. For example, the question of how to clean up the wire, it is not necessary to resort to improvised means, not intended for such operations. Clean and smooth, without damage to working components, remove the insulation allow special devices.

Traditional device for such tasks - is a special kind of pliers with precision holes with different diameters. Also, the tool provides a grooved jaws and straight blade. We can say it is a universal wire stripper, because it also allows you to capture and cut the cables of all sizes. If the functionality is not important and high speed and ease of operation, it is necessary to address to the family of wire cutters and pliers. Just a few manipulations required to adjust the device the size of a particular wire, and then just as easily made stripping. It has been noted that the toolbox is not used in such works. In the first place, this rule also applies to the usual knives, but that does not mean that in principle this category of household utensils should not be used in electrical work. For example, there is a cable cutter cable, the characteristics of which are just focused on the removal of the outer coating. The tool is characterized crescent shape of the blade, as well as the use of high-strength tool steels at the base.

The peculiarity of electrical works is a high risk of electric shock. Of course, it is present in every work process, but for those who need a special wire stripping knife, should take into account this aspect. Work in a high-voltage cable should only be performed by an apparatus having a dielectric coating. BTW, you can select the wire stripping tools at Banggood. Besides, you can easily get other electronic accessories (e.g. adjustable ratchet spanner) there with high quality and reasonable prices.

Review of Multimeter MT826

Multimeter MT826, a Chinese-made instrument, is used by many. Those who constantly deal with electronics cannot do without such equipment. This article explains what a Multimeter MT826. Instructions detailing the device allow its use even for beginners.

How does the multimeter?

The dial shows the measured values ​​in the form of numbers on plastic or glass display. The switch provides a change of device functions, as well as switch ranges. It is set to "Off" in the idle state. Jacks (connectors) for installation are in the housing leads. The main thing with the word COM and negative polarity has utility. It is inserted into the probe with the black wire. Next, marked VΩmA, it has a positive polarity with red probe. The test flexible wire is red and black with ticks. The panel is for the control transistors.

How to measure DC voltage?

The device switches to DCV sector, divided into 5 ranges. The switch is set to deliberately larger range of values. When measuring voltage battery-powered 3 V or 12 V sector can be put in the position of "20". Should not be put on a large amount, as increased reading accuracy, and can burn at a lower unit. For rough measurements, if you need accuracy to only 1, the meter can be directly installed in the "500". Similarly, it does not know when the measured voltage magnitude. Then you can gradually switch to a smaller range of values. On the top level measurement signals warning "HV", which lights up in the top left corner. Large voltages require compliance with caution in the work with the device, although as a digital voltmeter. Mustool MT826 it is more reliable than an ammeter or an ohmmeter.

BTW, you can select the digital multimeters at Banggood. Besides, you can easily get other electronic accessories (e.g. Mitutoyo Caliper) there with high quality and reasonable prices.

Review of Headphones Bose OE2

Today it's time to review the headphones Bose OE2 car, or rather a series of headphones for the iPhone and other Apple devices, as there are in addition to simply OE2 OE2i. These headphones use proprietary TriPort technology, but later on this.

All contrast version "i" - is a cable with a remote control for the iPhone and the built-in microphone. That is, the headphones can work in headset mode. Everything else is identical as that design, build quality and sound ergonomics can be estimated by one particular model.

Features: The design is very calm, as always, Bose, high-quality plastic - light gray bezel themselves "cups" (aluminum), and the bulk of the headband - black. Top headband lever, inside tissue.  The size is almost completely identical to the size of the ear. Leather, soft, with a memory effect, the speakers are covered by a cloth. They are easily removed, and, if necessary, they can be replaced. 

Sound quality:  The Bose OE2 used a unique technology called acoustic design TriPort, allowing to reproduce a great bass sound with low weight and dimensions of headphones that listening: The sound quality is very smooth, there is no predominance of some frequencies, the sound is clean, with good detail. Comfortably listen to rock and instrumental music. Then we asked other people to express their views. Someone called the sound is very soft, as if shielding someone that they are not "gesture" and the classic house just right, someone is willing to put OE2 five plus for peace. In general, the sound quality they are very balanced. 

Conclusion: Only one conclusion: Bose - there Bose. Each of the product is worthy of respect. Bose OE2 (i) is no exception. This is a very high quality and comfortable headset with excellent sound quality, and also lightweight and ergonomic

BTW, you can select the Bose OE2 cushion at Banggood. Besides, you can easily get other electronic accessories (e.g. plastic spring keychain) there with high quality and reasonable prices.