设计我最赞的博客

文章列表

• 控制组件（Component Control）　2008-12-03 12:21
  A Tool for Finding and Handling Small Parts It‘s time to take control of your components.You can identify tiny surface-mount parts with a handheld LCR meter. The lightweight tool automatically determines the type of component，inductor， capacitor， or resistor （LCR）， and selects the proper range and signal frequency for the most accurate measurement. The component type， measurement results， and test conditions used to determine the results are displayed on a dot-matrix display. If your wo...
  

  阅读全文>>
• 脱离算法的PID控制（PID Control Without Math）　2008-12-01 12:44
  If you need to design an optimized control loop for a hardware control problem， consider trying a proportional integral derivative （PID） controller. In this article， Robert explains that PID regulations are simple to code， wire， and tune to find the results you‘re looking for. Welcome back to the Darker Side. The vast majority of real-world systems are based around feedback loops， which are used to manipulate the inputs to a system to obtain a desired effect on its outputs in a controlle...
  

  阅读全文>>
• NiMH电池充电（Real-World NiMH Charging）　2008-11-30 15:34
  During bike trips， Ed uses Icom handie-talkies for communication. To keep the radios‘ batteries working， he uses a three-pack charger that he designed at his workbench. The charger has three 250-mA channels and one 100-mA channel so he can charge different packs. An early version of the GPS radio interface described in my October column accompanied us on our summer bicycling vacation （"HT Audio， GPS for APRS， and What Works，" Circuit Cellar 219， 2008）。 I hadn‘t finished the replacemen...
  

  阅读全文>>
• 工具时代（Tool Time）　2008-11-29 13:01
  Tom has often bemoaned that the tools electronic designers rely on haven‘t kept up with the silicon. The answer to his complaint may be Altium's Designer， which allows you to complete an entire design， including hardware and software， from start to finish. When you‘re done， debug with Altium's NanoBoard. Imagine you‘re embarking on a home improvement project-say， a kitchen remodel. Heading over to the local home improvement store you find all of the materials you need. There's finely mil...
  

  阅读全文>>
• Verilog介绍（An Introduction to Verilog）　2008-11-28 13:39
  If you are new to programming FPGAs and CPLDs or looking for a new design language，Kareem has the solution for you. In this article， he introduces you to Verilog. Although the hardware description language has been used in the ASIC industry for years， it has all the tools to help you implement complex designs， such as a creating a VGA interface or writing to an Ethernet controller. Programmable logic has been around for well over two decades. Today， due to larger and cheaper devices on the ...
  

  阅读全文>>
• 波束成形技术（Beamforming 101）　2008-11-27 19:20
  Beamforming enables you to find problems in your system before they occur. As Martin explains， you can perform your own investigation with a computer， a dual-channel A/D card， a pair of microphones， and some software. Tensions are high and a hostile submarine lurks in the waters just off the coast. A patient exhibits troubling symptoms-do layers of tissue mask a tumor？ A driver checks his mirrors and begins to change lanes but never sees the truck hiding in his blind spot. It‘s better to g...
  

  阅读全文>>
• 电子ID系统（Electronic ID System）　2008-11-26 12:37
  A Display for Text, Photos, and Slide Shows Jan‘s electronic ID system is an MCU-based electronic badge that displays color slide shows. Many electronic badges display scrolling text using a matrix of discrete LEDs. This low-power system features a graphical OLED display and can be easily upgraded to handle animation，video， or RF communication. Most of the time， we want to protect and hide our personal identification information. But， every so often，it helps to be easily identified. For in...
  

  阅读全文>>
• 性价比好的移动数据存储（Cost-Effective Mobile Data Storage）　2008-11-25 11:53
  Interface an SD Memory Card with an MCU When it comes to designing an embedded application， memory matters. In this article，Mandar explains how to expand a microcontroller‘s nonvolatile data storage capacity with an SD card. It's an intelligent way to handle the excessive memory requirements of typical embedded applications. In the last couple of years， the Secure Digital （SD） memory card has become a widely-accepted memory solution for a variety of portable devices and equipment， includi...
  

  阅读全文>>
• 一种动态牌的展示（A Dynamic Tile Display）　2008-11-24 22:07
  Board Layout, Real-Time Animation, and More John designed an expandable platform for light and animation. You can use it to create modular animated signs， animated puzzles， and more. The system features a tray and tiles，which are based on 8 × 8 LED displays. Once the tiles are synchronized， you can pick them up and rearrange them. Every time you turn on a computer screen or look at an animated sign， millions of pixels disappear into your work，your correspondence， or your entertainment. I...
  

  阅读全文>>