Featured Blog Articles

• 

  Are You Smarter Than an Op Amp?

  Posted Feb 22, 2012 By Bruce Carter

  Do you think you know all that there is to know about using op amps? There is a lot more to them than you think! A forgotten specification can change the comfortable world of op amp design.
• 

  Studying the Phasor Diagram

  Posted Feb 22, 2012 By Andrew Carter

  A phase vector or phasor in physics and engineering signifies a sine wave whose amplitude and frequency are time-variant. The behavior of a sinusoid is decomposed by phasors into three independent factors that relay phase information, frequency and amplitude. To visualize complex constants and variables, electrical engineers, aircraft engineers, electronic engineering technicians and electronics…

• 

  Using C Pointers in Arduino Code

  Posted Feb 22, 2012 By Circuit Projects

  The project is a combination of servo, ultrasonic range sensor and an Arduino to create pointers in C in order to move data around.

  The system was built with one piece at a time starting with the PING sensor. The distance of the hand from the sensor can be read by the serial monitor when the hand is put in front of the sensor. Based on how far the PING is from an object, the LEDs are…

• 

  Robot for Eye Surgery

  Posted Feb 21, 2012 By Joel Burns

  Check out this video on a robot that will be used for eye surgery. The developer gives a nice overview of the system. This video is produced by engineering.com.

  http://www.youtube.com/watch?v=_hWBHYkb8l8&feature=player_embedded#!

• 

  Track Recording Using Small Size GPS Logger Module

  Posted Feb 21, 2012 By Circuit Projects

  This potable GPS logger can be used anywhere in order to keep track of your journey in cars, bicycles, planes, etc. while being powered by a LiPo battery.

  The hardware part of the GPS module will include the GPS itself, Speaker, LiPo battery, Solar, microcontroller, COM connector and 128Kb EEPROM. The microcontroller is responsible for data conversion and selection, data storage and…

• 

  AC Inductive and Capacitive Reactance

  Posted Feb 20, 2012 By Andrew Carter

  This tutorial will showcase how inductance, capacitance and resistance affect alternating current. A circuit may have the alternating current through it and the voltage across it rising and failing together if having pure resistance. The image below shows the sine waves for current and voltage in a purely resistive circuit having an AC source. The current and voltage are in phase but they do not…

• 

  Breadboard Module Designed for PIC16F628A

  Posted Feb 20, 2012 By Circuit Projects

  This breadboard module is made to cater a PIC16F628A microcontroller for faster prototyping of circuits and avoid the initial microcontroller setup.

  The module can be easily plugged into a breadboard and will not consume more space since the components are already built on the module such as the oscillator, reset and ICSP circuits. Male headers are used to access the power supply pins…

• 

  Thermal Basics of Complex Devices

  Posted Feb 19, 2012 By Roger Stout

  Back in the days when most electronics components were packaged in metal cans, or manufactured as axial leaded devices, with equipment housings generally spacious and un-crowded, matters of device level thermal management were relatively straightforward for design engineers to deal with

New Blog Posts by EEWeb Members

• Flexible LED Display

  Posted Feb 21, 2012 By Sunrise Led

  Imagine an LED screen that you can fold, roll and store in a travel case. Now imagine the impact of presenting your product and services on a brilliant LED screen just about anyplace! FLEX Live Color…

  Comments(0)

• Outdoor Flexible LED

  Posted Feb 14, 2012 By Sunrise Led

  It’s so amazing; you will not believe your eyes. Light weight, flexible: roll or fold, easy to install. SunRise LED Inc. presents FLEX Live Color LED Displays. FLEX LC Displays can be curved and…

  Comments(0)
• 

  AVR Microcontroller Based LC Meter

  Posted Feb 09, 2012 By Circuit Projects

  The project pertains to an LC meter based on the AVR microcontroller which calculates and displays L and C from oscillation frequency using…

  Comments(0)
• 

  4-Digit Frequency Counter and Voltmeter

  Posted Feb 09, 2012 By Circuit Projects

  The project is a 4-digit LED voltmeter and frequency counter that was previously based on PIC16C71 but was replaced by 28-pin device…

  Comments(0)
• 

  Voice Controlled LED Array Project

  Posted Feb 09, 2012 By Circuit Projects

  This project shows how to build an array of 120 LEDs how one microcontrollers controls them, and how a PC was used to communicate with…

  Comments(0)
• 

  Using Bicycle Wheel to Display Text

  Posted Feb 09, 2012 By Circuit Projects

  The project shows rotating LEDs on a bicycle wheel that is capable of reading the RPM of the wheel and displaying the value with LEDs with…

  Comments(0)
• 

  Producing Changing Colors in PC Fan

  Posted Feb 09, 2012 By Circuit Projects

  The project illustrates how a PC fan is used to create color changes using 4 bright LEDs mounted in corners.

  An RGB LED control built…

  Comments(0)
• 

  Physically Huge 7-Segment LED Display

  Posted Feb 09, 2012 By Circuit Projects

  The project is a 12” digit height 7-segment display which was made from 15×4 LEDs wherein 4 LEDs are connected in series and fifteen…

  Comments(0)
• 

  Home Automation System Controlled by Smart Mobile

  Posted Feb 09, 2012 By Circuit Projects

  This home automation system was designed in order to provide control through web browser or a mobile phone for the ON/OFF state of up to…

  Comments(0)
• 

  DC Motor Controlled by H-Bridge Relay

  Posted Feb 09, 2012 By Circuit Projects

  A reversible DC motor can be controlled to spin clockwise and counterclockwise using this circuit which only has a single switch for single…

  Comments(0)