About: Ibrar Ayyub

What is the intelligent anyway; could we categories how the bees building their tiny hexagonal compound nest, ants searching for their food or birds migration using precision navigation over continental are the intelligent acts; or we as the human being with our cultures and civilizations is the only one that can be categories as the […]

†College of Information Science and Electronic Engineering and ∥Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China   ‡ College of Information Science and Engineering, Fujian University of Technology, Fuzhou 350118, China § Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom ⊥ Institute of Material Research & Innovation, […]

Cree has added 50% more light output to its 3.5×3.5mm ‘XP’ format with the introduction of the four-junction XPH35 series. Something like 1,800 lm is available with the device turned up to its absolute maximum of 1.05A, when it typically drops something over 12.3V (~140 lm/W). At the specified current of 350mA (Vf ~11.3V) output […]

Introduction This project is for the hobbiest who wants to build a measurement and display unit for an Awana Grand Prix® track (also known as a Pinewood Derby track.) The racetrack for which I designed this unit is a 4-car track. A car is approximately seven inches long, is released by a gate at the […]

These days we are living and surrounding by many tiny computers called embedded products. Unlike the general purpose desktop computer that we use for browsing or typing our email, this tiny computer is designed to do only a limited specific task. We could easily found this embedded product just about anywhere such as home appliance […]

This document describes the complete design for a camera switch that uses a servo to activate the shutter. This page include links to the complete circuit diagram, the .HEX file required to program the 12F675, and complete construction details. The switch consists of a PIC and a small number of standard components. The Servo Camera […]

Equipped with sophisticated Enhanced Capture/Compare/PWM (ECCP) peripheral the Microchip PIC18F14K50 microcontroller could produce up to four PWM channels output. The enhanced PWM (Pulse Width Modulation) mode in ECCP peripheral is capable to drive the full bridge DC Motor circuit directly both in forward or reverse direction. It also could generate single PWM output on the […]

Download the full package (micro code and PCB data) The core of this project is a PIC12F508 which was strictly picked based on cost and availability. This firmware should be easy to port to just about any PIC micro. Code only uses 1 timer, no interrupts, 22 bytes ram, and 369 words of flash. The […]

Most hobbyists and many professionals use Eagle CAD as a daily tool in designing schematics and laying out PCB. I’m going to share with you the most important tips and tricks for using Eagle CAD, which make my work much easier and faster. Tip #1: Keep One Hand on the Keyboard, One on the Mouse […]

Introduction This program is an experimental timed-discharge adapter for a Vericom control panel used with an Orenco Systems AdvanTex® wastewater treatment system (sewage filtration system) marketed by Wastewater Technologies, Inc. Although the Vericom firmware is capable of modification to provide timed-discharge capability by a firmware download via telephone, this adapter was just an experiment to […]