Здесь вы можете скачать журналы CIRCUIT CELLAR за 2011 год. Here you can download the magazines CIRCUIT CELLAR for 2011 year

January 2011:

• Teletext-Based TV Interface - This design uses a TV's built-in teletext decoder for displaying colored text and pseudo-graphics on the screen. It serves 15 pages that are continuously sent to the TV along with a video signal. If you don't live in Europe where teletext is used, you can apply these design techniques to your own server development and graphics-related projects
• An Ethernet Control System Interface - This well-designed motion control interface features a WIZnet W5100 that provides an interface between a Xilinx Spartan3 FPGA board and a host computer. The FPGA counts pulses from four quadrature shaft encoders and generates PWM for a motor amplifier. You can use the host PC to perform control calculations. Here the system is used in an inverted pendulum apparatus. Keywords: Control interface, W5100, Spartan-3, FPGA, quadrature encoder, PWM, inverted pendulum, Ethernet, WIZ810MZ, PicoBlaze, DHCP, MATLAB
• A Practical Parallel CRC Generation Method  - Do you understand the mechanics of the cyclic redundancy check (CRC) well enough to build a customized parallel CRC circuit described by an arbitrary CRC generator polynomial? This article covers a practical method of generating Verilog or VHDL code for the parallel CRC. The result is the fast generation of a parallel CRC code for an arbitrary polynomial and data width. Keywords: CRC, generation, cyclic redundancy check, Verilig, VHDL, LFSR
• Implement Scalable Capacitive Touch Sensing - Tired of switching? Try touching. It's now easy to implement a versatile multichannel touch sensor in various projects. Here you learn how to design a 20-channel device of your own. Keywords: Touch sensing, multichannel, capacitive, QT1103, dsPIC33FJ128GP706, LM3658B, battery management, MCP23S17, FT232RL, Bluetooth
• Three-Axis Stepper Controller - Stepper motor controller projects are posted all over the Internet, but many are platform-dependent. Now you can build an Arduino-based, platform-independent driver board that enables you to break free from platform constraints. Keywords: Stepper motor, controller, Arduino, ATmega168, ULN2804, L293D, drive modes
• A Look at the PSoC 3 and PSoC 5 - If you thought the first PSoC was great, wait until you get your hands on the PSoC 3 and PSoC 5. These affordable new PSoCs-with which you can define your own programmable logic functions-operate over a wide voltage range and are extremely easy to use. Now you just need to choose an application. Keywords: PSoC 3, PSoC 5, 8051, Cortex-M3, voltage booster, USB, FirstTouch, PSoC Creator
• Wave Shaping and Theremin Design with an MCU - Do you want to build your own version of the Theremin? This project enables you to produce a varying sine tone without physical contact. You can use a microcontroller's output bits to create a DAC with an R-2R ladder network of resistors. Each write to the port produces an immediate output voltage (PIC18F2221, Moog, infrared, GP2D120X)
• Debugging Techniques - During the course of your engineering career, you'll likely work on projects of all sorts: big systems, little systems, real-time systems, and more. As you'll see, there's not one sure-fire debugging technique that you can apply to every project. Your best bet is to have a good grounding in a few techniques and then approach each project on a case-by-case basis.
• Arduino Internet Clock -  The Adruino Internet Clock is a timepiece that acquires the current date and time information from Network Time Protocol (NTP) servers on the Internet. It then displays the information on an LCD for easy reading