The Xiaomi bracelet cannot be unlocked.
1. I restarted Xiaomi's phone for the first time.
2. Another trick is to charge the Xiaomi bracelet.
3. the Xiaomi bracelet cannot be unlocked.
This trick will be used later.
Use the Xiaomi 4 mobile phone to delete the bluetooth device and unlock it.
Settings, security and privacy, lock screen and password, unlock a bluetooth device, device (encoding ............), Delete a device
Then bind again.
If it is charging at this time, but the bracelet
, starting with the first rudimentary pedometer, and the rudiments of fitness wearable devices are beginning to emerge.The latest trend in fitness wearable devices is the smart fitness wristband, such as Nike Fuel band,jawbone up, Fitbit Flex, and more.These devices are not just a step-up gadget, but more importantly, it can set your daily workout goals and observe the progress you make every day.This device is usually connected to an application wher
Android Bluetooth Low-Power (BLE) is a great tool to get the steps of Xiaomi bracelet, androidble
Now the Internet of Things is booming, and Xiaomi's wristband and other products, next we will study the progress Logging Function of Xiaomi's wristband.
Tool
Package com. zsl. bluetoothdemo. ble; import android. bluetooth. export thadapter; import android. bluetooth. export thdevice; import android. b
good confidentiality. The shielding structure of Shielded Cables has inherent advantages in reducing mutual interference between cables, it not only shields external electromagnetic signals, but also blocks the electromagnetic leakage of cables. It does not emit interference signals, affecting other cables and preventing information from being eavesdropped.
In the shielded network cable, there will be a copper wire, that is, the ground line, you can use a shielded RJ45 socket, when used, line a
Unlike office and home Ethernet, which has long been well known, industrial Ethernet requires more professional knowledge and practical experience.
If you are installing or using an industrial Ethernet, you must understand the Five Points of cabling, signal quality, grounding circuit, switch, and communication.
Wiring problems
Like all networks, the advantages and disadvantages of cables directly affect the advantages and disadvantages of Industrial E
To measure the modernization standard of urban buildings, the design form and intelligence of buildings are two main aspects. The Weak Current System of Intelligent Building mainly consists of the following systems:
(1) communication network system;(2) Office Automation System;(3) construction equipment monitoring system;(4) automatic fire alarm and linkage control system;(5) Public security defense system;(6) Structured Cabling System;(7) Weak Current Power Supply and
cord (VCC) and the ground wire.• The lead length of the capacitor should not be too long, especially the high-frequency bypass capacitor should not contain the lead.
(3) In the single-chip microcomputer control system, there are many types of ground wires, such as systematic, shielded, logical, and analog ground. Whether the ground wires are properly laid determines the anti-interference capability of the circuit board. When designing ground and ground points, consider the following:• Logically
should be as bold as possible, and the grounding area of the lead end should be increased as much as possible. Generally, input and output SimulationSignal , It is best to isolate from single-chip microcomputer circuit through optical coupling. When designing a printed circuit, the ground line should form a closed loop to improve the anti-interference ability of the circuit. The ground line should be as rough as possible. If the ground line is very f
60LUX, room lighting should have switch control, in line with the relevant electrical design and construction norms.8. What power supply should be used in the engine room system?Dual-loop power supply, and select three-phase five-wire power supply.9, the room should be used which four kinds of grounding method?1) AC work grounding, grounding resistance should no
Industrial Ethernet cabling and fault Maintenance
The industrial environment is worse than the general environment. At least the vibration, moisture, and temperature are worse than the general environment. Industrial Ethernet requires more professional knowledge and practical experience. If you are installing or using an industrial Ethernet (Industrial Ethernet switch), you must understand the Five Points of cabling, signal quality, grounding circuit
not be too many to avoid tangle of multiple cables on the ground.
3. After the wire pulling process ends, the redundant cables at both ends should be organized and protected. When the wire is laid, the original rotation direction should be followed. The diameter of the coil should not be too small, if possible, use the waste wire head to be fixed on the bridge, ceiling or in the carton. Make a note to remind other personnel not to step on.
4. When organizing, binding, and placing cables, do not
Absrtact: Center room is the core and hub of the campus network, is the center of data exchange and data storage center, how to strictly in accordance with national standards, referring to international advanced norms, the construction of a modern, standardized computer room, for the reliable operation of computers to provide a stable environment, become increasingly concerned about the subject. Campus Network Center computer room environment, including hardware and software environment, is a mu
Tag: Security detector Alarm Controller for current transformer
1 Prevention of electrical fire
In order to prevent and reduce electric fire, the insulation status of 220/380 V power supply line should be monitored online, and the electric fire monitoring system can be used for leakage detection and alarm. Electrical circuit or electrical equipment once the leakage and exceed the rated value, the alarm immediately issued a sound and light alarm signal and display leakage current size. From
used. If lstp is located in the Settlement Board, the third-level clock should be used.The impact Grounding Resistance of the anti-lightning grounding device of telecommunication buildings should not exceed. Cables and metal pipes outside the building should be grounded before entering the building. lightning arresters should be added at the entrance when the cables and metal pipes outside the building are
) ensure that the probe grounding is as short as possible (the main reason for measuring the ripple is that the grounding line is too long). Try to use the original test short needle that comes with the probe. If no short needle is tested, the grounding wire and shell of the probe can be removed to expose the probe's crust. The self-made
. Put the small hard disk for backup into the hard disk box, connect the IDE line and power cord, fix it and seal the lid, a mobile hard disk is born.
When the need for data backup, as long as the USB cable will move the hard disk to the host's USB interface, in the Win2000/xp/vista series, you can implement Plug and play. This scheme can even avoid the problem of interleaving of two physical hard disk characters.
Solution to the problem in this chapter
In fact, the IDE has a total of 40 inte
capacitor and the heart-piercing capacitor can be used.
Three-terminal capacitor:
Three-terminal capacitor installation:
The grounding end as short as possible, reduce the grounding end of the lead inductance.
Shortage of three-terminal capacitors:
Wear heart capacitance:
As the grounding end and the ground can be close contact, lead inductance is s
power ground. In the design, the analog ground should be as bold as possible, and as far as possible to increase the grounding area of the terminal. Generally speaking, the analog signal for the input and output, and the microcontroller circuit is best separated from the optocoupler.
When designing the printed circuit version of the logic circuit, the ground wire should form a closed loop and improve the anti-jamming ability of the circuit.
The groun
public impedance between them, and its impedance coupling is restrained. The local decoupling capacitor is installed between the power terminal and the ground terminal of each integration piece, and is as close as possible to the Integration piece.
The decoupling capacitor between the Board refers to the capacitance between the power supply plane and the ground plane. It is the main source of decoupling current at high frequencies. The Inter-board capacitor can be increased by adding the area b
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.