301 Moved Permanently

Posted February 17, 2012 by Chris

“This Excel Worksheet has been designed to visualize data sent from microcontrollers in a very convenient way. There are the following advantages: Quick and easy visualization with several types of graphs, Various configuration settings, Very convenient data format for further calculations, Data exchange in standard data format and Almost everybody owns the software and hardware required”

Posted February 16, 2012 by Chris

“The XBee module offers a quick and easy solution for wireless needs and it even uses a standardized protcol to make sure your information reaches its destination. However, in my time using these cool little modules I have noticed how most people never utilize the more awesome features available like analog input or PWM. In this article, we will take a look at how to access the XBee so that we can reconfigure options and enable the more advanced features that the XBee Modules offers us as designers. ”

Posted February 15, 2012 by Chris

“This project is aimed at generating an VGA monitor (basic 31.5kHz horizontal, 70Hz/400line or 60Hz/480line vertical) compatible video signal, without using an specialised hardware VLSI video generator chip (hardwired limited, not available any more), nor 100s of TTL chips. All is done in software, running as vertical “microcode” on an single Atmel AVR microcontroller chip: an ATmega32, 16MHz, 32k Flash, 2k SRAM, 40pin, 32IOs.”

Posted February 14, 2012 by Chris

“A plywood chassis is equipped with the cutting motor attached to a inox 300 x 25 x 1.5 mm metal plate. There are 4 x 12 V reductor motors, each one equipped with a children toy wheel. An internal 12V 4Ah Dryffit rechargeable battery power it. A front bumper (in wood and gray plastic) can move and actuate 2 switches: when robots meets an obstacle, it can avoid it. Hard to program microprocessor? complex computer? No! just few relays: simple and no bugs!”

Posted February 13, 2012 by Chris

“Often the biggest stumbling block to using alphanumeric LCD displays is the number of pins required to control them. For the Hitachi 44780, twelve pins are required from the MCU to interface to the display for it to work in eight bit mode. For many smaller MCU, twelve pins are not available or will be better served in the application. To be fair, this can be reduced to six by using the 44780’s “Four Bit” mode, but this can still be more than acceptable for most applications.”

Posted February 12, 2012 by Chris

“The robot has two independently controled, electric-powered front wheels and two caster wheels at the rear. The sensors are: Two “bumblebee” 1024×768 color stereo camera pairs mounted on the mast, providing a 110 degree field of view. A 6-degree of freedom IMUs wheel encoders, and a GPS for pose estimation. A front bumper with left and right switch sensors. Two short-range infrared sensors that can detect obstacles up to 1.5 meters away.”

Posted February 11, 2012 by Chris

“The console is designed as platform for learning digital electronics and C#: we’re in the process of writing a book covering all aspects of building the console, how its components work and how to write games for it with our framework.”

Posted February 10, 2012 by Chris

“A hardware keylogger is a perfect solution for monitoring user activity, at very low risk of disclosure. A hardware keylogger is a purely electronic device, so no access to the operating system is required, no traces are left, and software has no possibility of detecting such a device. However, the hardware keylogger concept inherits one weakness: physical access to the keylogger is required for retrieving captured data. This problem has finally found its solution: a Wireless Keylogger.”

Posted February 9, 2012 by Chris

“A very popular type of LED that has finally come about is the tri-color, RGB LED. The RGB stands for: red, green and blue since the LED is capable of displaying all three colors, independently. This means that an RGB LED can display any color of the rainbow. This is a powerful capability, but it also requires more control. This tutorial explains how to display all the colors of the rainbow on a single RGB LED using a PIC 18F452 microcontroller.”

Posted February 8, 2012 by Chris

“About 10 times a minute the controller poles each of the three I2C temperature sensors (DS1721) for it’s current temperature. The sensors are the eight pin SMT IC’s on the back of the boards. There is one on the main circuit board. There are two more sensors on the smaller boards. One of the smaller boards is screwed into the incoming air vent and the other is screwed into the vent on a backup AC unit.”