2016年10月27日星期四

XiaoMi Yi M1 Review: Simple to Operate Rivaling a Mobile Phone

Have you ever known about the fresh Yi M1 Mirrorless camera? Well…XiaoMi Yi M1 is called the first smart Mirrorless camera for the youth in China. This camera is equipped with 20.16 million effective pixels, M4 / 3 system, and CMOS sensor (Sony IMX269). The sensitivity range is ISO 100-25600. It not only supports up to 1/4000 second shutter speed and 5 / second continuous shooting speed but also supports 30fps 4K video recording and lossless RAW shooting. In addition, it can connect to the mobile phone via WiFi/Bluetooth, and supports other functions.
7ded8247-d65f-4155-a100-2b96f9b7df44
In terms of the appearance, the body of this camera is not made of a single piece of aluminum alloy but plastic. With the dimensions of 113.5x64.3x33.6mm, it is slightly larger than the Olympus E-PM2 and Panasonic GM1. And the manufacturer provides two colors for choice, storm black (all black) and ice silver (silver black).
81bb5ccf-4bbd-4417-aa85-047d2cc3c12f
The main operating area of this camera is concentrated at the top. On the middle of the top, there is a common hot shoe, user-friendly for an external flash lamp and other accessories. On the top side, the front is the shutter, and the power lever with a "built-in" design, not protruding.
d570354f-0339-47e6-a933-d8dcca721378
As for the interface and storage, this camera supports only two interfaces, USB 2.0 and Micro HDMI, and does not support the 3.5 Stereo Jack. Between the two interfaces, there is an SD card slot, which supports SD / SDHC / SDXC, and is compatible with UHS-I.
f4e7fe4e-4a0c-41ce-a2ae-48fdf43fd865
In addition, XiaoMi Yi M1 is built-in with the BXM-10 rechargeable 900mAh lithium battery, which supports for taking 450 photos (CIPA standard).
Following are the pros and cons of XiaoMi Yi M1.
Pros:
  • With the 2000-megapixel sensor, it providesexcellent quality hardware foundation.
  • It supports4K 30p video capture.
  • It supportsC mode, which provides portrait templates for learning.
  • With Built-in Wi-Fi / Bluetooth, it can sharethe network through the App.
  • It comes with a light and compact body.
  • It supportspeak display for easy transfer.
  • It comes withthe M4 / 3 system and a rich lens group.
Cons:
  • Theflash sync speed is only 1/125 second.
  • The camera needs to improve the speed of response.
  • There is no flip screen.
  • The touch fluency needs to be improved.
  • Some menu settings need to be more detailed.
80ae5ccc-fb42-464b-92aa-ea68809c8ea5
Generally speaking, the overall performance of the XiaoMi Yi M1 is excellent. Especially, the smartphone-like simple operation provides quite a good user experience.
Finally, good News for you, Banggood offers presale discounts.
$409.99 for 1-15th orders
$419.99 for 16-50th orders
$439.99 for Behind 50th orders
Normal Prices: $499.00
The Yi M1 Mirrorless camera will arrive on Oct.31, 2016.
330be018-a01c-4f19-ad6b-27700565c329

How to Connect an Ammeter

Despite the fact that the ammeter is considered an attribute vehicles produced a long time, this equipment still occurs as early generations of machines. Therefore, replace, repair, or make any other operation should be aware of how to connect an ammeter if necessary.

You will need the connecting wires and a DIY digital ammeter. Since the ammeter into the circuit is connected in series, locate the wires that connect the generator and battery. They must be careful to separate, without losing the value of the polarity of the wires.

As a rule, the generator and the battery are connected by wires of large cross section, so choose those to connect an ammeter should be the same diameter. Accordingly, it is necessary to connect the wires in order to connect the generator and an ammeter to the battery with the same. For this purpose, place them carefully and wrap the tape to avoid closure.


If you are using the ICL7107 ammeter, by and large polarity of the wires does not matter. But in the case of an analog device, be sure to note that negative of an ammeter is connected to the battery plus. BTW, you can select the digital ammeter at Banggood. Besides, you can easily get other electrical accessories (e.g. DIY voltmeter) there with high quality and reasonable prices.

2016年10月25日星期二

What Are Needed for the Reception of Digital Terrestrial Television?

Modern TV-receivers are designed to receive digital signals, but most TVs are available to residents of the Russian Federation, are analog devices, not adapted to receive transmissions in digital mode. However, to get a modern image and sound quality possible, and on a normal TV, has served more than one year.

To adopt modern digital signal to an analog TV, you need an antenna and set-top box, called a digital HD DVB receiver or decoder. And to the antenna and to the console, there are certain requirements, observing that you can get a modern high-quality picture and sound the same.

Do not rush with the purchase of this device, if your area digital television broadcasting has not yet been organized. It is necessary to wait for the beginning of operation of digital television decoder to test in the store. The HD DVB-S receiver is a compact electronic device that receives a signal from the antenna, and then converts it and gave it to the television set. Buying the console in the first place ask about its compliance with the requirements of TSETV network; the instrument must be optimized for DVB-S2 broadcast standard, support MPEG4 video, and Multiple-PLP mode. 

But this is only a minimum set: if you want to take a pay program, it requires conditional access (in the form of a CAM module), and if you plan to record a program, the device must be USB port. It is worth taking the opportunity to set-top box channels broadcasting in HD mode, i.e., high definition. Additional features include the presence consoles display the received signal strength that helps to determine the optimal position of the antenna.

2016年10月24日星期一

Something about the Electronic Clock Kit

Just want to say that those who believe that it is cheaper to buy ready-made, more cannot read! This article is for those who have little interest in, or interested in radio electronics. And as for those who have decided to join this hobby.

Radio-electronics, I got carried away while still a schoolboy. This case comes in the form of small package. We reveal, look what's inside. Set Ingredients - Fee - Seven Segment digital displays with a point - 4 pieces - Chips - 2 pieces (resistors, capacitors, transistors, quartz, and other elements) - power cord - Details housing - Instruction manual is included in the Chinese language. To assemble DIY LCD clock kit enough (the language of circuitry common to all), but the setting had a problem. The building process we need: - the soldering iron; - solder; - side cutters; - Knife assembly decided to recite with passive components (resistors, capacitors, buttons and etc.).


The kit comes two types of resistors (510 and 4.7K), marking them color. You can use a calculator or ohmmeter. But in fact, everything was much simpler, they were signed. Then cut side cutter too much, and in one fell swoop to solder all. In this photo visible trained contact resistors and a number have already soldered. Soldered buttons Sockets for ICs, do not forget to monitor the correct position on the key (notch at one end of the panels). It requires digit control soldered onto the diode, because he does not care which side! It came to transistors, quartz, connectors for 24V 1A power supply and socket for the battery. Check the correct installation of transistors, it is also important! The blessing and the diagram on the board and it is marked all. All, all elements on that side in the place left solder digital segments. We arrange them in their places, and do not forget to turn up a single point! And also one calling soldered. All watches are assembled, drumroll, the moment of truth ... is connected to the power source.

2016年10月20日星期四

Why Does the Electric Motor Overheat?

Electric motors are widely used in the workplace and at home. The new engine, passed factory tests can regularly work a few years. But in violation of the rules of operation sometimes there are faults. One of them is the overheating of the engine, which may well lead to a complete damage it.

Why the Electric Motor Overheats
Disturbances in the motor (e.g. the 300 RPM motor) can be caused by several reasons. These often include a violation of the rules of transportation, storage and installation, and the use of unacceptable operating conditions. Sudden shocks, prolonged vibration and shock is likely to disrupt the integrity of the elements of the engine and it can lead to overheating when working. Even worse, if the motor is stored for a long time in the open air, it feels the effects of low temperatures and high humidity. These adverse factors may well cause the appearance on the outer surface of the rotor and the stator core of rust.

One of the most common faults of the motor is damaged insulation of coils, which in most cases leads to a local short circuit. During operation, the unit begins to warm up strongly, the rotor rotates unevenly, and the machine shaft is permanently deformed. Winding insulation can damage the engine careless transportation, and foreign particles from entering the body. BTW, you can select the cheap gear motor and RPM measurement tool at Banggood.

Other Causes and Possible Remedies
If the engine is turned rotor scrolls with difficulty or not at all is fixed, and at the same time there is intense heating of the body, it is possible degradation of the bearing. With such a rotor and stator faults hit against each other, it leads to a complete jamming. Typically in such a case is required to send an electric motor repair replacement bearing. Overheated motor often occurs when it is overloaded, for example due to high or low voltage. The sharp increase in the room temperature, clogging ventilation channels can also lead to such an effect.

In continuous and prolonged operation of the engine, you can often observe a reduction in power. The electric machine is working at the limit mode, but cannot gain the necessary speed, at the same time starting to heat up. The reason again is becoming overloaded, you want to eliminate. In some cases it is sufficient to switch off the unit and leave it for a while in this state.

8Mm WiFi Endoscope Camera for Endoscopic Video System

As we all know, endoscopic video systems are designed to display the image on the monitor and document the test results. They are used with rigid and flexible fiber-optic endoscopes. In general, the video system consists of an optical-mechanical adapter with a video camera, the control unit, and the monitor. In some cases, the control unit may be omitted. And the monitor can be household TV or computer with an input video signal. So, you need to choose the endoscope camera. And today, I’d like to introduce a new WiFi endoscope camera to you guys.
5620b3b1-0d9d-43b4-ad2d-dd836c194e66
This is an 8mm endoscope camera, which supports wireless WiFi connection. It can work with Android and IOS mobile device. You just need to install the APP and do WiFi connection with the endoscope camera, and then you can check the image. This endoscope camera comes with 6 LED lights, of which the brightness is adjustable. With a 2M Pixel high-resolution CMOS camera, it supports HD 720P video.
3752d95d-68fb-4b90-a21a-e183de339353
Specifications:
  • Camera head OD: 8mm
  • Lens: 2M Pixel CMOS camera, 6 LEDs
  • Resolution: 640 x 480, 1280 x 720
  • Waterproof Level: IP67
  • Frame Rate: 30 FPS
  • Viewing Angle: 70 degree
  • Transmission distance: Within 5-30m
  • Effective Focal Distance: 4-6cm (The best viewing distance)
  • Battery Capacity: 500mAh (Last for 45 minutes)
  • System Requirement: iOS / Android / Windows / Mac
  • Cable length: 1/2/3.5/5 M
336b7510-3c55-4eab-a4ed-a6dd94809b69
With the mini size and light weight, the 8mm endoscope camera is portable for use. And due to the IP67 waterproof design, it can be used underwater. Thanks to the sucker, it is easy to mount the WiFi box on the back of phones or other places with the flat surface. And the WiFi box was built-in with a 500mAh battery, which can work for 45 minutes, charge via 5V power. Compatible with the iOS/Android/Windows/Mac System, this camera supports photo taking and video recording on mobile phones.
d3b1245c-b3cc-4771-bf57-bb39340b934d
Generally speaking, this WiFi endoscope camera can be used as an underwater camera, waterproof micro-camera, motor vehicle detector, sewer pipeline detector, search and rescue detector, criminal and custom detector, or archaeological detector. In addition, it can be used for the PCB detection, aviation and space industries, care and tractors industries, the petroleum drilling industry, construction industry and so on. By the way, in the process of the endoscope camera choice, you should decide what you want before selecting the control unit and make sure that you get the best estimate of your hard-earned money.
bc98fb5c-32da-49c7-8f71-db5299ed1353

How to Program the DDS Function Signal Generator

In principle, you can use any of the nominal value from 8 MHz to 16 MHz - you just have to put in a program the desired frequency. Resistor in the circuit 5 ohms. (From the left edge of the 7 pieces obtained by parallel connection of resistors 10 ohm - sealed sandwich). On board there are 4 jumpers 1206 a variable resistor to adjust the contrast of the display after the measurement is replaced by two fixed resistors. Due to the relative simplicity of the circuit elements on the circuit board and the pin numbers are not signed - easy to understand. On the right side of the chip displayed three pads for analog legs - two ADC inputs - just in case.

Now about the program. For the source program of Italian colleagues, mentioned in the first part of the article about the DDS signal generator kit has been applied. I removed most of the Italian words, changing them into more understandable English counterparts, and changed the principle of data output to the display. The main body of the program (cycle DO LOOP) consists of a reference to display the sub-programs, the survey keyboard and navigation on the display). For each menu item has its own sub-program uses the destination buttons, well, and, if desired, the user can tailor them to your wishes. As a conclusion of the data used to display an array of two strings of 16 characters in length, each of which I change values - numbers, letters, etc. The current position is indicated by a blinking cursor.


LF DDS generator currently generates 8 signals: standard - sine, square, sawtooth, triangle, and not very - pseudonoise, of cos-type function (x) * sin (5x) , damped sine wave and a square wave signal with a variable duty cycle increments ≈ 1%. The last three tables were accidentally found in the depths of the internet, and are inserted for collection - if desired, they can be changed to something more useful. The rectangular signal with variable duty cycle - a useful thing, and the subroutine was written under it. BTW, you can select the DDS signal generator kit at Banggood. Besides, you can easily get other electrical accessories (e.g. security tag hook key) there with high quality and reasonable prices.