About: Ibrar Ayyub

Learn yourself, how to write a simple program using Clanguage for the 89C2051/89C4051. Write a C source program, compile,and download the HEX code to the chip directly, connect DC adapter, seewhat happen after power up the board. No need ICE, in-circuit programmer,everything can be made by yourself easily. Introduction This page was provided forBeginnerswho interested […]

Joysticks pull off a really neat trick. They take something entirely physical — the movement of your hand — and translate it into something entirely mathematical — a string of ones and zeros (the language of computers). With a good joystick, the translation is so flawless that you completely forget about it. When you’re really […]

The upgraded part is only the PCB,the software remains the same as in original project which you can findat  EasyDownloader V 1.1     Here you have a single side versionof PCB of the Easy-DownloaderV1.1 by WichitSirichote. The board is 10x4cm in a full size. That newPCB has some small modifications comparing to original scheme. It […]

The MS series are thumb-sized (27.6 × 13 × 16.8 mm) spectrometer heads developed for installation into mobile measurement equipment by merging our MEMS and image sensor technologies. The MS series use a CMOS image sensor integrated with a light receiving slit. The internal optical system is comprised of a convex lens on which a […]

Inside the capacitor, the terminals connect to two metal plates separated by a non-conducting substance, or dielectric. You can easily make a capacitor from two pieces of aluminum foil and a piece of paper. It won’t be a particularly good capacitor in terms of its storage capacity, but it will work. In theory, the dielectric […]

The EasyDownloader V 1.1 , a Flash Writer for 89C2051/4051 which was designedby Wichit Sirichote, used  a Double-SidePCB. I think, it’s difficult to make my ownPCB by myself. So that I decided to design a Single-SidePCB instead. My first prototype board wasmade using hand-writing with a permanent ink pen( see later in Figure 3).This page […]

n their most basic form, charge pumps are circuits that generate a voltage larger than the supply voltage from which they operate. Traditionally, charge pumps have been perceived to have limited voltage capability, offering performance that is seen as filling a niche in the range between low-dropout LDOs and switching regulators. Nonetheless, there are benefits […]

Cell-phone Frequencies In the dark ages before cell phones, people who really needed mobile-communications ability installed radio telephones in their cars. In the radio-telephone system, there was one central antenna tower per city, and perhaps 25 channels available on that tower. This central antenna meant that the phone in your car needed a powerful transmitter […]

Phihong has introduced custom remote and touch controls for LED lighting companies. “Phihong provides manufacturers lighting control systems that are customised to their specific needs,” said Phihong v-p Keith Hopwood

Build your own a personal writer forprogramming HEX code into Flash based microcontroller AT89C2051(2k) andAT89C4051(4k). Simple hardware and Easy use software in DOS and Windowversion. Single-side and double side PCB files included.sourcecode with sdcc version! Introduction The first version of the Easy-Downloaderwas designed in 1997 to be used as a tool for my students on […]