How to Build a Bluetooth Controlled Robot Smart Car

Immediately before assembly, carefully read the instructions. In it, apart from the description of the process, given several options for color model specified color and color number.

Remove all runners (finished casting plastic in a frame or plate with attached parts) and remove those items that you plan to glue at the moment. Do not delete the runners all to avoid confusion. Next truncated be cleaned from burr (plastic, which resulted in the joint halves of the mold and form a small surplus). Set the smart robot car kits.

Details are then coated with a thin layer of glue using the drawing pen (when the adhesive in a tube, it is better to use a small trowel). We connect them, hold a few seconds (10-20) and set aside. Some parts of color before docking with another. Glass vehicle, which are transparent plastic, glued to a colored or door opening. If you decide to insert them before painting, it is necessary to close the window on both sides with masking tape.

Then paint the rest of the model. Always use the holder. Secure the item in the clip. You can work as a brush and bottle with spray paint or an airbrush.  Military vehicles, particularly trucks, it is better to cover the semi-matt varnish. They are applied to the surface of a forceps and pressed firmly with a cotton swab, previously dipped in warm water for 5 seconds. To base the image did not shine. It is applied before varnishing and moistened with vinegar. After completing all of the above, you will get a small copy of the car. A gain experience will be able to collect the entire collection. BTW, you can select the smart robot car kits at Banggood. Besides, you can easily get other electrical accessories (e.g. 100A shunt resistor) there with high quality and reasonable prices. 

What You Need for Building a Bluetooth Controlled Robot Smart Car

Modelers choose the most convenient to use the material: paper, plastic and sometimes wood. The most common is the basis for the creation of an exact copy of the car is reduced plastic. Kits assembly are sold in shops as ready small parts, which by means of adhesives, paints and tools gather together. That's what turns a beautiful model of the car, very similar to the original.

You will need

-Set for vehicle assembly (It is a set of tools for building)

-Paint, glue, solvent, masking tape, putty, paint, pigments set

-Robotic car kits

Prefabricated plastic model cars are the following scales: 1:87 (very rare), 1:76, 1:72, 1:35 (armor), 1:24 (for the car is the chassis), 1:25, 1:18, 1:12 (copies of motorcycles and sports cars). When you first do this type of modeling, it is best suited 1:35. Since it is easier to work, and only the brush can be used, as opposed to 1:24, where it is intended for painting small parts, not bodywork. The smaller the scale, such as 1:72, requires certain developments in the field of hobbies.

Next, you need to acquire a minimum set of tools for assembly. It can be purchased in a specialty store or ordered online (though it will require more time and material costs). But there is another way: do not buy the special model nye tools as those used in everyday life. This tweezers (both medical and cosmetic), small scissors, stationery knife, wire cutters, brushes, containers (small cans of paint dilution), the holder (universal mounting with a magnifying glass), a pipette or syringe without a needle set Needle (small file), a set of small drills and mount them (pen-drill), sandpaper (fine grain), pen (drawing tool).

Also, you need some additional materials: oil cloth or newspaper to protect the table surface from contact with her glue, paint, plastic, sawdust; solvent paint (enamel, acrylic, aerosol), masking tape (for the protection of those places that when the color should remain unpainted), putty to eliminate shrinkage, cracks, seams and other recesses; lacquer, set of pigments (powder boxes, markers, paste) to weathering (aging model application operation traces), glue (special only).

BTW, you can select all these at Banggood. Besides, you can easily get other electrical accessories (e.g. detacher magnet) there with high quality and reasonable prices.

How to Build LED Hours

Once the Internet came across an article about the hours for which figures hovered in the air: And I came up with the idea to make them. I came ... and went because there were a lot of problems. Since I had never done schemes microns, it was the most important question - how to flash the controller? And still many other questions: how power is transmitted to the rotating board? How are working hours? 

The building hours is divided into several stages: 

1) The mechanical part. I decided to start with the mechanical part as well as it is easiest to do. I bought this cooler's size – 92*92*20 mm: The second coil (containing 30 - 40 turns of copper wire with a diameter of 0.5 mm): All the mechanics finished, proceed to the next step. 

2) Revolving board. That clock circuit: The rotating digital clock on the micron PIC16F84A. On sale there are two types of microns: PIC16F84A-04I / the P PIC16F84A-20I / the P for this scheme is necessary first option. did the board and soldered all the details: Then did board with LEDs (for better display of numbers is better to paint board and LEDs black, LED front whittle away, so as not to dazzle the eye), and solder it to the base, screwed the rotor and all connected: rotary board is finished. 

3) The supply part. Now we need to make the power supply to the motor, an infrared LED, rotary board. To transfer power to the rotating part of the scheme, you can use different methods: sliding contact, RF - generator, etc. The most common is a method using a brush. Its disadvantages are known - an intermittent contact, sparking a lot of noise.  Therefore, it was decided to transfer power through a rotating transformer with an air gap. 

BTW, you can select the clock circuit at Banggood. Besides, you can easily get other electrical accessories (e.g. door eye hole camera) there with high quality and reasonable prices.

Making Clock as Working Hours

Clock - one of the most popular characters in culture. They symbolize the time, his transience, or, on the contrary, eternity. Clock - is an attempt to man, impotent in front of the passage of time, at least keep track of his progress. For many hundreds of years of its existence, the clock has undergone many changes.

Time - is a phenomenon that a person is not able to accept any of the senses, therefore, feel the time he helped the changes occurring in the nature. The earth revolves around the sun, so the amount of light that informs, day or night. That Sun and became the first person in the benchmark time. Sundial - the most ancient of all invented by man. They were a common pole stuck in the ground, and was drawn around the timeline. The shadow that falls on the earth from pole served as an arrow. These watches are now often the decoration of parks, and to make them possible and at home by using a piece of paper and a needle. And you can get the rotating LED clock to make one for yourself.

Later appeared sand or water clock - they measured out the time in which sand or water have time to fully move through a narrow opening at the top the bottom of the clock. The first mechanical clock appears to be considered Antikythera mechanism. That is, he certainly was not the first, but it is the oldest preserved example. The mechanism was found in 1901 in the wreck near the Greek island of Antikythera. It was a 37 bronze gear in a wooden case, equipped with dials and was intended, apparently, to calculate the motion of heavenly bodies. 

The first mechanical clocks set in motion by means of lowering the load. Stone or metal cargo tied to twine or rope wound around a rotating shaft sinking, this resulted in the movement of the shaft. These clocks were used, for example, in urban areas. Later, Galileo perfected the pendulum Herbert, who later came to be used in watches. In such hours were used vibrational laws. BTW, you can select the rotating LED clock at Banggood. Besides, you can easily get other electrical accessories (e.g. voltmeter car) there with high quality and reasonable prices.

Metal Sheet Cutter for Soldering

During soldering and even finishing work may need to cut metal (profile or plate), and it can be done using sheet cutting tools. You will need saws, pipe cutters, saws, shears, grinding machines, driven saws, circular saws, fat or mineral oil.

Before you begin, select a saw blade, taking into account the specific parameters of the metal. Securely fasten the material in the grip, adjust the tension and the level of attachment. Stand up to the vise at a distance of 15-20 cm, take the saw with your right hand and the front part of the material being cut - the left and hold it in a horizontal position. Make smooth progress, slightly pressing the metal sheet cutter tool with both hands by the end of the work, slightly loosen the pressure.

From time to time, treat the fabric fat or mineral oil, it is necessary to reduce friction. If the saw blade away from the mark, start to cut the other side. Cut the metal strip thickness. In order not to damage the fabric, make sure that at least 3 teeth hacksaw blocked the thickness of the strip, but if this is not possible, then cut a strip on the wide side, which secure the strip in a vise and cut along the edge with a file, and then start cut, slightly deflecting hacksaw.

If you need to cut the length of the workpiece, but there is no possibility to bring the cut until the end, once again hold down the material and cut from the opposite end. When working with thin sheets or stripes lay them between the bars and the clamp in a vice, and then cut with them. To cut a curved or angled slits, where the direction changes, drill holes, and then continue to work using the jigsaw.

To cut round metal with a small cross-section, first apply the striper at risk, then fasten the workpiece in a vice and cut the risk by using a triangular file. Then continue by applying manual hacksaw. To cut metal with a square cross-section, use the same procedure, but slightly deviates from the saw itself in the process of reducing the slope. Then perform the cutting of, holding a hacksaw in a horizontal position. BTW, you can select the metal sheet cutter at Banggood. Besides, you can easily get other electrical accessories (e.g. portable magnifying glass) there with high quality and reasonable prices.

When working with the metal with a shaped cross-section pre-apply marking places cut risks. Further strengthen the material and make small cuts on the risks. Continue to work using a hacksaw.

Digital Clamp Meter, Purpose and Where to Get

The need to measure the electricity is not unique to the corresponding profile of employees, but also ordinary people. In this case, become irreplaceable tongs electric differing usability. This tool allows to performing practically all measurements of electrical parameters, such as voltage or current. When this is not changed during network operation, it is no gap. Devices classified into several types depending on the measured value: wattmeter; ammeter; phase meter; ohmmeter.

The most popular clamp meter (e.g. digital clamp meter DT266) is necessary for determining the AC current in the conductor. They take into account the physical processes of the current transformer, which has two windings. The first bus is the measured parameters, and the second compound has a special magnetic circuit.

Primarily they are used to calculate the network load. The single-phase version of the work carried out in the following sequence: on the incoming conductor measurements are carried out, the parameters obtained are multiplied by the supply voltage and the cosine of a phase angle (in the absence of reactive load it is equal to unity). Also with the help of this tool, you can determine the power or electrical household appliance. It calculates the result by the formula, which should take into account the current value at a certain part of the chain. In addition, the clamp meter is suitable for testing instruments in particular ascertain their correct operation. So you can find out if there are any discrepancies in meter readings and actual energy consumption.

To begin to open the tool and take them to a single cable, which may be of any phase. After closing the screen displays the parameters defined value. If you want to take measurements in a place with complicated access, you can use the special button, designed to secure the evidence. That is, the value will be displayed on the screen even when disconnected from the conductor. It use possible on installations of any kind, both closed and open. Measurements in the open air should be carried out only when suitable weather conditions and lack of rainfall. BTW, you can select the clamp meter at Banggood. Besides, you can easily get other electrical accessories (e.g. air rotary tool) there with high quality and reasonable prices.

How to Use the Camcorder as a Web Camera

Video cameras are supplied USB-A cable to connect to your computer, allowing you to use their functionality in a Web camera with high resolution. This can be accomplished in two ways.

You will need

- The device driver;

- The 1080P video camera;

- Webcam DV program.

If your camcorder can be connected to a computer via the USB-interface to check the presence of disk configuration with the driver, the installation of which will allow you to perform the pairing devices in webcam mode. Insert the disc into the drive and follow the instructions of the installer menu, install the software on your computer. Often the drivers for using the camcorder as a web camera installed a separate element, which is necessary to tick the list of installable software components in the computer.

After a complete video camera driver installation, restart the computer and connect the camera to it using the USB-cable, the included in the purchase, at the same time after a short period of time the unit will be defined in the system. The camera can be configured as a driver of the utility, as well as from the control panel, the computer devices in the "Printers, scanners, cameras." Picture quality is adjusted directly involve its program taking into account the outgoing internet connection speed and configuration of your computer to the processor and graphics card. BTW, you can select the video camera at Banggood. Besides, you can easily get other electrical accessories (e.g. UV curable solder mask) there with high quality and reasonable prices.

If your model is not provided by the above-described video camera connection mode, use the demo version Webcam DV software. Its principle of operation is based on the fact that it causes the operating system to recognize the camcorder connected to it as a full-fledged web camera.

Winkpax PAX G1, the Gospel of Mobile Game Enthusiasts

Have you heard of the Winkpax PAX G1? Well… It is the king of multipurpose, a 3 in 1 tablet PC. This is not only a tablet, but also a smartphone, a portable gaming console and a TV box. If you prefer gaming on the mobile, then this has it all. Supporting an internal SIM card with 4G and a customized controller, the G1 is suitable for you to play games, work, and entertain.

Winkpax PAX G1 supports the 3-in-1 game content, competitive mobile games, simulator games and TV games. It is rich in resources of movie and TV /FREE /zero UI. And it supports three modes, palm game mode, TV game mode and home theater mode. In the palm mode, the controller opens up to separate the left and right modes. This is done by simply sliding the controller into two parts. In the middle, there is a beam that extends to create a frame that you slide the tablet into and lock in place. And you can use the Winkpax PAX G1 to play X-BOX games on TV.

What’s more, it is an advanced artifact for mobile game player. It is almost identical to the Xbox controller, coming with 2 joysticks, one d-pad, and 4 action buttons. There are 4 shoulder buttons and a charging port on the top of the controller. The gears in the middle are part of the mechanical extending arms. The WINKPAX handle allows you to control the game more accurately with higher fault tolerance. It is indeed the Gospel of mobile game enthusiasts.

Specs:

• CPU: MT8783 64 bit Quad Core A53 (1.3GHz)
• RAM: 2GB DDR3
• System Flash: 32GB
• Display: 8 Inch 1200*1920 IPS
• Touch Panel: 10 Points Capacitive Touch Panel
• Camera: Front: 8M FF, Rear: 13M AF
• Battery: 5400mAH Polymer Battery
• OS: Android 5.1
• Wi-Fi: 2.4GHz WiFi 802.11 b/g/n
• Bluetooth: Bluetooth 4.0
• GPS: Yes
• USB: USB 2.0 (High Speed)
• Extended Storage: TF CARD Up to 128GB
• Speaker: 8Ω×1pcs

Now, the Winkpax PAX G1 can be preordered at Banggood. And you can enjoy the preorder price $222.83, $15 lower than the normal price. And the new product will arrive on December 9, 2016.

How to Choose an Electronic Cigarette?

Electronic cigarette - a device designed to simulate the smoking process. Externally it is similar to a conventional cigarette. How does the process of smoking by means of an electronic device? Artificial cigarette produces steam generation, which can be defined by the concentration of nicotine. Smoker inhales the "smoke". At the same time the body gets the nicotine in the usual way - by inhaling.

How to choose an electronic cigarette? First you need to get acquainted with the component parts. The first is the device required to supply electricity. By means of the second part is automatic cigarette roller. A third device (cartridge) for supplying liquid intended.

The entire device is generally similar in appearance to a conventional cigarette. When this battery is the analogue of the part in which the tobacco and the liquid cartridge filter resembles. Automatically connects the two parts together, but it is designed so that is hidden from the eyes of those who smoke electronic cigarettes. The liquid is formed by a pair consisting of propylene glycol, glycerin and nicotine liquid. It is added to a flavor composition. BTW, you can select the electronic cigarette at Banggood. Besides, you can easily get other electrical accessories (e.g. micro USB interface) there with high quality and reasonable prices.

An important question for those who decided to buy electronic cigarettes: "Harmful or not these devices," Yes, the composition of liquid present in them cannot be called useful. However, the total amount of harmful components generated during the vaporization of the electronic cigarette is significantly lower than in the smoke of its classical counterpart. Someone starts smoking ES, feeling the weight of positive effects. First of all, from the mouth and from the hand ceases to assume the smell of smoke. Furthermore, it improves overall health. It is easier to breathe shortness of breath passes and brighter feel the taste of food. Another benefit of e-cigarettes is a possibility of smoking in prohibited places for this, because nothing smells and does not burn.

How to Set Up a Digital Oscilloscope DSO138

To set up a digital oscilloscope, DSO138, you will need:

• - Kit oscilloscope DSO138;

• - Multimeter;

• - Power supply 8-12 V;

• - Tweezers;

• - Screwdriver for small-scale works;

• - Soldering iron;

• - Solder and flux;

• - Acetone or gasoline.

The first step is to solder the loop wire thickness of 0.5 mm in the connector holes the J2. This will be the contact for the self-test output signal oscilloscope. Board TFT LCD screen is necessary to solder the 3 pin connector to the bottom of the board. We are almost finished assembly. But do not rush to remove the soldering iron, and we still need it for a short while. BTW, you can select the oscilloscope DSO138 kit at Banggood. Besides, you can easily get other electrical accessories (e.g. 5mm neodymium magnets) there with high quality and reasonable prices.

Now, it is desirable to wash the board with acetone, gasoline or any other way to clean from the flux residue. After that, connect the power supply to the board and measure the voltage between the ground and the point TP22. If the voltage is approximately equal to 3.3 volts, then you're all well-soldered, congratulations! Now we need to turn off the power supply and short-circuit solder pins jumper JP4.

Now you can connect to the oscilloscope LCD display, aligning the pin terminals to pads on the circuit board of the oscilloscope. Connect the power supply to the oscilloscope. Then, for a few seconds on the screen manufacturer's logo appears and boot information. Then the oscilloscope will enter into operation. Connect the probe to the BNC connector on the oscilloscope and draw the first test. Nowhere without connecting the black wire probe, touch his hand to the red. The oscillogram should signal interference from your hand will appear.

Connect the red test probe to the loop self-test signal and black leave the non-connected. Switch SEN1 put in the position of "0.1V", SEN2 position "X5", and the CPL - to position "AC" or "DC". With the clock button SEL to move the cursor to mark the time, and the "+" and "-" set the time "0.2ms", as illustrated. In the waveform should be visible beautiful meander. If the edges of the pulses are rounded or have sharp sharp peaks on the edges, it is necessary, turning the screwdriver capacitor the C4, to ensure that the signal pulses become as close to rectangular. Now switch SEN1 put in the position of "1V", SEN2 - in the position of "X1". All other settings remain the same. Similar to the previous point, if the signal is far from the square, it will correct it by adjusting the capacitor the C6.

This DSO138 oscilloscope setup is complete. Let's check it in combat. Connect the test leads oscilloscope to a working electrical circuit and see the signal.

Enusic 001 X-Bass Bluetooth Speaker, 50% OFF Sale

Bluetooth speakers are incredibly popular with music lovers, especially those who love outdoor and traveling. And today, I’d like to show decent model to you guys. It is Enusic 001, an X-Bass Bluetooth speaker.

The first thing that attracts attention is a metal outer shell that is strong enough to use the speaker outdoors, feels great and increases the sound quality. The controls are located at the top of the device. They are very easy to access, allowing you to control the device in seconds.

As for the sound and performance, the speaker provides super bass stereo. It should be decent enough to listen to most music genres, while you are on the barbecue or relax on the beach. What’s more, supporting the Bluetooth Ver2.1 and EDR, it can instantly connect to your smartphone and tablet from up to 33 feet away. Speaker automatically reconnects to the last device used. And the built-in microphone lets you enjoy hands-free calls and video chats.

Powered by the built-in 300mAh batter, Enusic 001 can play music for 4-5 hours (depend on your volume) even though it looks so mini, with the dimensions of 78*60*58.8mm (L*W*H).

Finally, good News for you, Banggood offers heavy discounts. You can enjoy the 50% OFF coupon on Enusic 001.

Coupon code: Enusic0150

Check here: Enusic 001

Expired Date: Dec. 30, 2016

VC99 Digital Multimeter Review

This is a Vichy VC99 digital multimeter review. The fact that you are reading dear readers - it is not even a review in general, and the article ... but I think it will be of interest to you.

Since I am radio amateur (though not important ... bad) - for me, the presence of the meter in the house is a mandatory attribute. But as the technique is now increasingly difficult, and the measurements should be still more precise - it was not enough pointer multimeter and I became needs more or less tolerable digital multimeter. Especially with the advent of machine-multimeters my attitude to them has changed (well, I liked the machines :)). And then I began to study the reviews of the automatic measuring devices.

I have not been able to choose who we take from these two instruments. Unit UT61E - or rather faster seriously, but without hFE modes (gain of the transistor) and temperature measurement ... also more expensive. Vichy VC99 - cheaper, there are modes of hFE and temperature measurement, but less accurate ... besides slow. Based on the comments of illumination VC99, staffing backlight control processor with ADC (FS9922-DMM4) is implemented as follows: - Long press the button (to the second squeak) «HOLD» at terminal 74 multimeter processor appears a high level (2.5V), but there it is only a matter of seconds ... seconds 10. That is, if the light has been fully implemented in this multimeter (Vici VC99), then it would shine about 10 seconds. If the light is needed for a long time - you need to constantly every 10 seconds to press the button «HOLD», and you can forget about the always-on backlight. BTW, you can select the Digital Multimeter at Banggood. Besides, you can easily get other electrical accessories (e.g. RPM measurement tool) there with high quality and reasonable prices.

This full-time implementation of the backlight in the chip FS9922-DMM4 I did not like. I agree - that by using this thing as it is, and the trailer is only one transistor key can receive illumination ... but it is not light out, and its likeness which is. Since the city is illuminated on the microcontroller, I did not want to - I do not have to write programs of knowledge, I decided to implement the backlight on TTL logic. But just on logic, bypassing the processor would have to display a separate button for the backlight, which is not desirable. 

How to Charge the Li-ion Battery

To one of the most common types of batteries include lithium ion. Data Battery methods differ from others, so always pay attention to what the charger is used.

You will need

- A mobile phone with a lithium-ion battery;

- USB Lithium battery charger.

Fully discharge the battery, if you just purchased a mobile phone. This is best done with the help of a call mode. For this call to any free room for you at the moment when the battery level is minimal (the last division of the indicator or sound signals). Wait until the battery level drops so that your phone is switched off. Turn on your phone, check the remaining battery level. If the unit turns off again, then it is completely discharged. If not, make a call again, as in the previous step. Make sure your phone is turned off. Connect it to the charger for a few hours. Wait until the battery is fully charged - this can be identified by the testimony of the indicator on your mobile phone. Upon reaching full charge or disconnect the phone at once, hold it connected to the charger for some time. Do not interrupt the charging process without extreme necessity.

Turn on the phone. This "training" is carried out several times - this will allow the battery to maintain operation for a long time, from two to six days. Use constant voltage method to charge batteries Li-ion. Its essence is to limit the voltage at the battery. The maximum voltage of 4.2 volts, the current recommended - 0.7 C. Reduce the charging current as the battery voltage closer to the maximum value. Make sure the charger is adapted for voltage 4.1 or 4.2, and the tolerance here is 0.05 volts per cell. Note that a small increase in its temperature (2 to 8 degrees) can occur when the battery is charging. BTW, you can select the battery charger at Banggood. Besides, you can easily get other electrical accessories (e.g. universal LCD controller) there with high quality and reasonable prices.

How to Make FM-Radio

In order to create your own or relayed FM-radio station, you need to go through several stages of obtaining permits. This station will allow you to broadcast with its own information and advertising inserts. The organization of the radio station is focusing on legal support of all procedures.

Register entity. This may be a company, JSC. To create a radio station, you need to obtain a license to broadcast, which is issued only to a legal entity. Register broadcasting company with the tax authority. To develop in the desired broadcasting frequency band (87.5 - 108.0 MHz). You will need to obtain the conclusion of the FSUE "GRCHTS" about the possibility of using radio and electromagnetic compatibility to prepare a bid and to sign the raw data. Depending on the availability of radio frequencies Radio Frequency Center will issue a report with an indication of the frequency at which you are allowed to broadcast. And also, you need to get the FM Radio kit.

Spend a registration radio as the media. At this point it must be made check the uniqueness of the name of a radio program. Following consideration of the documents you will be formalized certificate of registration as a radio media. Submit an application to grant a license, prepare a program concept of broadcasting, the cover letter. As a result of the application you will receive a license to conduct radio. Man, you have to apply for participation in the competition for the right to obtain a license to broadcast in the heart of the subject of federation or village with a population. BTW, you can select the FM Radio kits at Banggood. Besides, you can easily get other electrical DIY accessories (e.g. DIY mini amplifier) there with high quality and reasonable prices.

Apply for a license for communication services for broadcasting purposes. Prepare a set of application documents with the description of services and the scheme of construction of communication networks. Register the transmitter in the territorial department and get a certificate of registration of radio-electronic means.

How to Check the IR Receiver

With the advent of remote controls life has become much easier. And if you set the IR receiver on your computer, you can remotely control them as well. This is easy to do yourself. Connect the IR receiver to the computer using the supplied cables. The operating system detects the presence of the new device. Set the receiver driver and run the program. Choose to set up the program in IR receiver tab, type your scheme, then it will be detected by the computer and running.

To test the Arduino IR kit, use a remote control, for example, TV or music center. Get it in the program, select the location and code reading of each button. Test the remote control to the computer. In fact one can use any IR. You can also use one remote to control multiple devices. Only it is necessary that they were not near a computer, or they will receive signals and commands from the remote control at the same time.

When adding a new control panel, specify its name. Then use the mouse to select each button turns on its circuit. To do this, press the corresponding button of the real console upon request. Bind commands to the remote control. To do this, go to the tab "Actions" and call the configuration wizard, which will provide you with a list of programs, with which you can control with the remote. Then go directly to the definition of the necessary commands for the buttons. BTW, you can select the IR wireless receiver at Banggood. Besides, you can easily get other electrical accessories (e.g. 220V timer relay) there with high quality and reasonable prices.

There are already proceed at their own discretion and, depending on your needs. One button can perform several commands, depending on whether the program is running, so it is a creative process. Thus, you can configure the remote control absolutely any of your computer programs with a single remote. Depending on the IR receiver models will vary the number of its features and functions, but by and large everything looks the same.

USB Soldering Iron for Household

In my household there is a simple soldering and rework station, which fully covers all my needs in any soldering elements. Rather it seemed to me that this is so. But once in my car failed the stove works, as I found out later - the reason for this was warmed up contact and, as a consequence, fusion connector. Having read various forums, I learned that it's a pretty common problem for my car brands and decided it circumcision contact and soldering wires directly to the heater control board.

Available USB soldering iron in their original packaging is a plastic box in the likeness of the blister. In the scope of delivery, in addition to the soldering iron, you can find a small piece of solder, a little, but at the same time convenient, stand, as well as the cable for connecting the handpiece to the network. On one side of the cable standard USB connector, and the second is something very similar to a standard 3.5 mm jack.

This USB soldering iron is a very high quality - housing halves perfectly adjusted to each other and tightly coupled, making it a pleasure to take in hand, no squeaks, when compressed does not rattle, no foreign smell. But very plastic, used for the manufacture of body could be better, not that it was bad, but it just slippery, soldering all the time trying to slip out of your hands, it stops light green ring located on the leading edge of the housing. Using a soldering iron is very convenient, and it fits the hand like a pen. BTW, you can select the soldering iron at Banggood. Besides, you can easily get other electrical accessories (e.g. USB tower fan, 2MP USB digital microscope endoscope magnifier 40x 800x) there with high quality and reasonable prices.

How to Make a Tachometer

If your standard instrument panel design does not provide for the tachometer, it is easy to correct this deficiency. To build a strong and beautiful body for the LED tachometer, you'll need a little perseverance, some simple tools and simple materials at hand.

You will need

- Tachometer suitable model

- Can a suitable diameter

- Metal scissors

- Epoxy adhesive

- Foam

- Fiberglass

- Paint

- Sandpaper

- Office or any other sharp knife

- Awl or chisel

- Putty

- Sided adhesive tape car

- Household hair dryer

- A small rubber spatula

Make a blank body. To do this, you will need to insert a tachometer in the appropriate size tin, then smooth and neat scissors to cut metal sheet surplus. Try to obtain a clean cut, free of nicks and burrs, otherwise then you will either have to spend a lot of time and effort on the grinding edge details or to make a new piece. BTW, you can select the tachometer at Banggood. Besides, you can easily get other electrical accessories (e.g. fluorescent clock) there with high quality and reasonable prices.

Fill the bottom of the cans with foam. This will adjust the "fit" of your tachometer in the case and further strengthen the part. In addition, apply a layer of foam on the external part of the body to the place where the tachometer will presumably be fixed to the dashboard. Shape the future housing. Once you have given the mounting foam to dry (best to let this process for twenty-four hours), cut off the excess foam with a knife. Inside, you should have enough space to fit a tachometer. Outside, the foam should be cut off, forming a "leg", which we will later be glued to the dashboard. Do not forget to make a hole for the wire tachometer.  The most difficult thing is behind. We proceed to the finishing. Use sandpaper to smooth out irregularities and roughness on the surface of the foam, as well as remove a layer of gloss paint from a can.

Attach the housing blank. To glue is completely dry, the workpiece should be kept in a well-ventilated room for twenty-four hours. Cover the part with one or two layers of paint in the color of your dashboard. If necessary, after the complete drying (see the instructions in the manufacturer of paint) cover the item with one or two layers of lacquer. Install the tachometer. Place the tachometer in the finished housing, output wires through the hole that you left for them, and connect. 

Xiaomi VR 3D Glasses Review

In the new products release conference of the Xiaomi Company shortly before, in addition to the release of the first double-curved screen mobile phone, Xiaomi also released the official version of the 3D VR glasses. AFAIK, this pair of fresh VR glasses adopts the hardware-level motion sensor, not only increasing 16 times of sensitivity but also achieving a 16ms delay. In addition, the new Xiaomi VR 3D Glasses come with a 9-axis body feeling handle, which is the biggest difference with the Gear VR and provides a wonderful user experience.

Appearance and Design

The official version of the Xiaomi VR 3D Glasses uses the white main color, plus with the integrated headband design, making the overall appearance modern and concise. The inner part of the eyeglasses, which contacting with skin, adopts the soft island velvet fabric, skin-friendly and comfortable. With the dimensions of 7.87 x 11.61 x 6.14 inches, the whole device weighs just 209 grams, very light to wear.

Equipped with a distance sensor, it can detect whether the user wear the device and immediately start. Joined by the object distance adjustment knob, it supports up to 600-degree myopia and 200-degree hyperopia. In addition, the official version of Xiaomi VR 3D Glasses also supports head circumference adjustment. And the integrated headwear design is conducive to dispersing pressure.

Specs and Performance

The official version of the Xiaomi VR 3D headset uses the self-developed MIUI VR platform of Xiaomi Company. There are already more than 500 panoramic videos, 30 VR applications, and over 200 VR developers having submitted the development permits. This novelty is compatible with any smartphone which is sized of 4.7 – 5.7 inches. Coming with a 9-axis motion sensing remote controller (powered by 2 AAA batteries), it is more convenient to use. Also, it provides the 103-degree super wide-angle FOV.

Specs:

• Compatible with: Smartphones
• Smartphone Compatibility: 5.0 - 5.7 inch
• Interface: No
• Bluetooth version: Bluetooth V4.0
• FOV Range: 90 - 110 degree
• FOV: 103 degree
• IPD Adjustment: No
• IPD (Interpupillary distance): No
• Focus Adjustment: Yes
• Space for Glasses: No
• Primary Button Type: Remote Control
• Games support: No
• Product weight: 0.408 kg
• Product size (L x W x H): 20.00 x 29.50 x 15.60 cm / 7.87 x 11.61 x 6.14 inches

Summary

As far as concerned, the original Xiaomi VR 3D Glasses are good news for people with myopia or hyperopia. In addition, it would be a right choice for the novice of VR Glasses, starting a simple VR experience.