"Although Ji Zhi cloud has mature development tools and cloud services, there are still few specific products, especially consumer level electronic products. However, today, Xiaobian just got the gizwits MI. Light 4.0 Bluetooth light earlier and shared it with you. It's still a limited edition. OK, no more nonsense. There's a wave of pictures.
1、 Appearance evaluation
Side view
full-face photo
The black series packaging carton, with its surface covered with the yellow label of organic Chi Yun LOGO and official WeChat official account, is very personal, but the whole looks slightly thinner. In addition, the back of the packing box is also printed with a QR code based on Android and IOS system, which can be used to download product debugging software for mobile phones. However, this needs to climb the wall. I won't talk about it here. I'll talk about it later in the article. There is also a set of labels "only for intelligent hardware", which seems to be the same format as a meter proverb, ha ha.
Family photos
When you open the packing box, you can see that the white bulb is tightly fixed in the middle of the box by the PS plastic model, which can effectively reduce the damage rate during transportation. The three piece set of products is presented. Do you feel very harmonious.
The classic round arch design with fashionable white appearance has a good decorative effect. However, as more and more manufacturers have launched their own series of intelligent LED lamps, among the many lamp types with unique design and beautiful shape, the shape of Ji Zhiyun is slightly ordinary.
The aluminum alloy heat dissipation shell has a good handle. The shape of heat dissipation fins expands the heat dissipation surface of the bulb, which virtually speeds up the heat dissipation rate and reduces the surface aging speed. In this design, it has a full sense of science and technology. The E27 lamp holder made of galvanized iron sheet is screw type. Compared with the bayonet type lamp holder, it is easy to connect power, and the screw type lamp holder is more firmly fixed, which is not prone to safety accidents.
2、 Related parameters
The following are the specific parameters officially provided by Mi light buletooth:
Related parameters
Color temperature
2700—6500K
life
50000h
Power factor (PF)
zero point six five
Maximum diameter width
68.5mm
Maximum length
120mm
socket base
E27
LED power
8W
Voltage
86—265V
working frequency
50—60HZ
Light effect
70LM/W
Maximum remote control distance
50m
Luminous flux (LM)
500-550L
Among them, the remote control distance, Xiaobian measured, in the barrier free situation, the maximum Bluetooth remote control distance can barely reach 50 meters of official data, in barrier obstructions, such as hand-held remote control devices and Mi-Light, separated by a wall, and a distance of less than 30 meters, the Bluetooth control effect is so suck. However, Ji Zhi cloud Mi light is positioned as a smart home, and its customers are also used by families and individuals. Generally, the actual space of families is not large, and the actual operation is often operated in the same space. It can achieve satisfactory operation results even across walls, doors and other obstacles.
In addition, the official also specified Mi light related functions:
1. RGB three primary color conversion, dimming range: 1-100%
2. Gravity ball control color conversion function
3. Double white temperature conversion, dimming range: 1-100%
4. Saturation control, 16 million colors to choose from, dimming range: 1-100%
5. 8 different conversion modes, adjustable conversion rate, dimming range: 1-100%
6. Music control function, which can control light color conversion according to rhythm or voice conversion
3、 Hands on operation
Seeing that so many flowers are becoming more and more attractive, my friends can't help feeling a little agitated and want to get Xiaobian to power on and show you, er... Ladies and gentlemen, don't worry. We still need to make some preparations before that. If you want to do well, you must sharpen your tools first. According to the official instructions, download the relevant debugging software Mi light Bluetooth app first. As mentioned earlier, the official provides two different system download methods. Based on Android 4.3 and above and IOS system, the IOS system can be downloaded and used directly by directly scanning the code on the mobile phone. I won't say much here. For domestic users of Android system, it's a little troublesome, But it can also be solved.
First of all, for domestic android users, if they want to visit the Google App store, they should first download a wall climbing software. The general VPN accelerator software can be used. After installation, they can connect to the Internet according to the software help. I won't elaborate here. Secondly, through the official QR code, enter the download interface of MI light Bluetooth software in Google App store, as shown in the figure below.
However, you need to log in to Google account before installation. For small partners without Google account, you have to spend some effort to register, SMS verification, log in and integrate. It takes a lot of patience. Did you feel the experience was unfriendly. However, I can understand that after all, people's smart cloud does not intend to be sold in China. Finally, after installing the software, you can power on MI light to see how the operation effect is. Ha ha, think about chicken jelly.
After you open the MI light Bluetooth software, you will be prompted whether you want to open Bluetooth. This should be agreed. After all, the software controls the operation changes through Bluetooth.
Turn on the mobile phone Bluetooth, power on the smart led, click the search element logo, the software will search the target device and connect it automatically. Moreover, an Android phone can connect and control up to four smart LED lights at the same time, and the software function is quite powerful.
The following describes the specific operation menu of MI light Bluetooth software.
RGB three primary color transformation mode function under colors menu
Gravity ball control color conversion function.
Double white temperature conversion function
Color saturation control function
Under the colors menu, there are four modes and functions, namely color, balance, Kelvin and saturation. At the same time, they correspond to the RGB three primary color transformation mode function described above, gravity ball control color transformation function, double white temperature transformation function and color saturation control function. Different modes have different operation effects. There are six tones that can be changed with each other. High playability.
This is the uploaded video, which is the effect of changing in different colors. Little friends can experience it.
Under the modes menu, there are 8 different modes. A variety of colors are combined to form a mode transformation and switch freely, which is very cool.
However, what makes Xiaobian feel cool is the music mode under the music menu. By playing local music, the light color will change with the rhythm, slow and urgent. As a music lover, it can be used to do simple sound effects and visual lighting. It is a good choice. Let's enjoy it.
Find some music with a strong sense of rhythm, and the effect will be obvious.
Mi light buletooth software can also control the start and end time of smart light work, which is more humanized and more suitable for people living alone and office workers. There is no need to worry about forgetting to turn off the light and no one to remind. At the same time, you can set four smart lights working hours, and the function is awesome.
4、 Disassemble
On the whole, MI light intelligent LED lamp has rich functions. My friends must be curious about what the interior of the intelligent lamp with so many functions looks like. I will take you to disassemble it to meet your curiosity.
Most of the disassembled parts are here.
After dismantling the lampshade, Xiaobian felt that the Chinese products were full of visual sense (solemnly declare that Xiaobian did not discriminate against domestic products. On the contrary, Xiaobian always believed that made in China would become famous overseas one day). The whole lamp source wiring board was made of glue. It was understandable to apply glue at the solder joint and the connection of relevant parts, which could play the role of moisture-proof and insulation. It's the same for the irrelevant parts of the wool board. The workmanship is a little rough. There is still room for improvement.
Gradually reveal your true face.
The disassembly process was fairly smooth, but we should also pay attention to several details. Firstly, when disassembling the white dome lampshade, because it is bonded with white adhesive, it is best to heat the joint with a hot towel or other heat source before disassembly, so that it is easier to disassemble the lampshade. Secondly, when disassembling the whole lamp source line board, after screwing off two screws, it is best to pry it gently with a blade or crowbar without too much force, Because the upper light source board and the lower circuit board are connected by two wires, if the force is too strong, it is easy to break the solder joint.
The orange line area in the figure is the Bluetooth module, which adopts Texas Instruments Bluetooth 4.0 CC2541 As a core processor, it has high performance and ultra-low power consumption （ The Bluetooth module of Bluetooth low energy RF transceiver system, cc2541, follows the low-power Bluetooth protocol, Suitable for single-mode low-power Bluetooth applications, cc254x integrates a 1Mbps GFSK RF transceiver. The following are the specific characteristic parameters of cc2541 chip:
2.4-GHz RF on-chip system conforming to low energy consumption specification and private
Support data rates of 250 Kbps, 500 Kbps, 1-mbps and 2-mbps
Excellent link budget, supporting long-distance applications without using external front segments
Programmable output power up to 0 dBm
Excellent receiver sensitivity (– 94 DBM at 1 Mbps), selectivity, and blocking performance
Suitable for radio frequency regulation systems worldwide: ETSI en 300 328 and en 300 440 class 2 (Europe), FCC cfr47 Part 15 (United States), and ARIB std-t66 (Japan)
layout
Few external components
Provide reference design
6-mm × 6-mm square flat pinless (QFN) - 40 package
Compatible with cc2540 pin (when USB or I2C is not used)
low power
Operating mode RX low to: 17.9 Ma
Operating mode TX (0 DBM): 18.2 Ma
Power mode 1 (4 - µ s wake-up): 270 µ a
Power mode 2 (sleep timer on): 1 µ a
Power mode 3 (external interrupt): 0.5 µ a
Wide supply voltage range (2 V – 3.6 V)
Tps62730 compatible with low power in operating mode
RX as low as: 14.7 MA (3-V power supply)
TX (0 DBM): 14.3 MA (3V power supply)
micro controller
High performance and low power 8051 microcontroller core with code prefetching function
Programmable flash memory in the system, 128 or 256 KB
8-kb RAM with hold function in all power modes
Support hardware debugging
Extend baseband automation, including automatic acknowledgement and address decoding
Holding of all relevant registers in all power modes
peripheral
Powerful 5-channel direct memory access (DMA)
Universal timer (1 16 bit, 2 8 bits)
Infrared (IR) generation circuit
32 kHz sleep timer with capture function
Precise digital received digital signal strength indicator (RSSI) support
Battery monitor and temperature sensor
12 bit analog-to-digital converter (ADC) with 8 channels and configurable resolution
Advanced Encryption Standard (AES) security coprocessor
Two powerful universal asynchronous transceiver (UART) supporting several serial protocols
23 universal I / O pins
(21 × 4 mA，2 × 20 mA)
I2C interface
2 I / O pins with LED drive function
Safety device timer
Integrated high performance comparator
development tool
Cc2541 Evaluation Module Kit (cc2541emk)
Cc2541 small development kit (cc2541dk-mini)
SmartRF ™ Software
Provide IAR embedded workbench ™
The red area is st8s003f3p6 single chip microcomputer produced by Italy France semiconductor. The maximum clock frequency is 16mhz, the size of data memory is 8KB, the size of data RAM is 1KB, and the width of data bus is 8 bits. Specific parameters can be viewed through this link: Official Website of Italian French semiconductor
The red area is the front and back of the power control module. When the input voltage is AC, the voltage is 100-240V; when DC, the voltage is 16.5v and the current is 380mA.
5、 Conclusion
It seems that MI light is only available on eBay, but not in China. The price is RMB: 99 yuan. Compared with similar products produced by other foreign manufacturers, the price is relatively close to the people. On the whole, the limited edition LED lamp of Ji Zhi cloud has a good experience in performance and playability, although the internal workmanship is slightly rough, This does not affect the overall beauty and functional use. By combining the mobile app, it can provide a variety of lighting visual experience, including cool colorful lighting transformation and warm color gradient lighting function. The product still has good performance in terms of viewing and practicability.
Original statement: This article is original by Aiban. Reprint is declined“
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