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Evaluate led standards Reprinted from: http://www.eslighting.cn/2010/0419/162_2.html Author: LED times Network As a lighting product, the following factors must be taken into account:Luminous flux and Efficiency Colors, colors, heat dissipation design, and reliability 1. Luminous flux and efficiency (typical brands) 3000 K 4000 K 6000 K rebel Phili

Main push sd6602d/sd6603d/sd6604d isolation advantage Scheme Q q 2892715427The main push sd6602d/sd6603d/sd6604d is a high-precision, low-cost primary feedback LED constant current drive chip, should beFor flyback isolation LED illumination.The chip works in the inductive current discontinuity mode, which is suitable for 90vac~265vac input voltage,Output power below 18W.The main push sd6602d/sd6603d/sd6604d

After a few days of learning, finally the basic framework of Linux drive to figure out ... Really hard,,, but finally still boil over, although still the most basic,,,Tonight also finished my first Linux drive,,, Heart still a little excited, haha o (∩_∩) oDirectly on the drive source program:::My Development Board is Smart210, according to schematic, IO port output 0 LED light, Output 1 led off#include #in

After the previous migration, the kernel can already mount the root filesystem on tqimx6q, and then start porting all kinds of device drivers, this article first to transplant the keys and LEDs. The reason to start with the keys and LEDs is that the drivers for both devices are the simplest.Key-driven portingView the schematic of the tqimx6q that the Development Board has 5 keys, which, in addition to the reset key, there is a power button, this power key and other keys are somewhat different, s

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EmbeddedLinux Bare Metal Development (i)--light Led Development Board: Friendly arm smart210First,Circuit Diagram Inspection1. Floor circuit diagram Consult the Board circuit diagram of the development boards, consult the LED related partsLED Circuit Working principle:650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M01/82/5E/wKioL1dSyoCwaSpsAAAbV0ZVsno967.png "title=" Picture 1.png "alt=" Wkiol1dsyoc

This week, I learned how to use it. Refer to ldd3 and embedded system interface design and Linux driver development. Combined with my own development board, I developed the LED driver program, writing a program on your own is really different from reading a book. Many mistakes were made in the process, but the program was finally completed. I'm very happy! Hardware Platform: tq2440 Kernel version: 2.6.30.4 1. Hardware Introduction Next, we will first

In the global promotion of "Energy saving and emission reduction" premise, how to effectively reduce the printer energy consumption has become a concern of the current office of the topic. Save the use of consumables Supplies are the main source of consumption of printer equipment, so the printer energy saving first from the use of supplies began to talk about. In the current enterprise print demand, most of the output is required for day-to-day office, and in the printing of these informal do

Tip: When you are finished setting, save the label again so that the settings are lost when you open the label again. 3, the label paper installation error Please reinstall the label against the steps in the Quick installation guide that comes with random. 4, does not carry out the test paper operation If you are using a spacing or tagged label, the paper steps are essential. Use the following procedure to calibrate your labels: ①. In standby, press the Cancel key a

Now, let's write our own first character device driver--light LEDs. (Imperfect, back to perfect) Hardware platform: Exynos4412 (FS4412) Writing the drive is divided into the following steps: A--View the schematic, data manual, understand the equipment operation method; B-Find a similar driver in the kernel, develop it as a template, and sometimes need to start from scratch; C-Implement driver initialization: For example, register the driver with the kernel so that the application can pass in th

memory combination, can run smoothly based on the Android 5.1 kernel Emui 3.1 version, and the machine also built 2700mAh capacity battery. The back of the fuselage is equipped with a 13 million-pixel rear lens, which contains the LED dimming lamp and its corresponding 8 million-pixel front lens. Editorial Reviews: Huawei Mate S machine thickness is only 7.2mm, than the Huawei Mate 7 also thinner, and in the back of the lens also