About: Ibrar Ayyub

  // Generator frequency 100 Hz with Timer0 For Pic16f877 // //#include “D:\MICRO_PICC_Group\timer\timer_0\timer_0_100hz.h” #include <16F877.h> #device adc=8 #FUSES NOWDT,XT //No Watch Dog Timer #use delay(clock=4000000) int1 time; #int_RTCC void RTCC_isr(void) { output_toggle(pin_b0); /* time =!time; if(time==1){ output_high(pin_b0); } if(time==0){ output_low(pin_b0); }*/ set_timer0(236); } void main() { setup_adc_ports(NO_ANALOGS); setup_adc(ADC_OFF); setup_psp(PSP_DISABLED); setup_spi(SPI_SS_DISABLED); setup_timer_0(RTCC_INTERNAL|RTCC_DIV_256); setup_timer_1(T1_DISABLED); setup_timer_2(T2_DISABLED,0,1); enable_interrupts(INT_RTCC); enable_interrupts(GLOBAL); […]

A couple of months ago I picked up cheap WiFi-controlled LED bulbs (one among dozens of very similar devices), after seeing them at a friend’s place.  This turned out to be an excuse to play with the ESP8266, which has inspired several hacks. I was overall very happy with these bulbs: decent Android and iOS apps and, compared to fancier […]

Description — What is the PIC-EL board and what can you do with it? Specification — What features are on the PIC-EL project board? Schematic — Circuit diagram on this web page or in PDF format Builders’ Notes — Check here for special tips or cautions in building the kit. Test Software — The latest test […]

Hello friends here is a proteus simulation of speed control of DC motor with the help of Pulse width modulation (PWM) control, PWM signals are generated by 8051 microcontroller. As we have discussed earlier that proteus is a really good simulation software for beginners and 8051 is the most basic among all microcontroller so this […]

Introduction Especially for switch-mode power supplies (SMPSs), the printed circuit board (PCB) layout is a critical but often under appreciated step in achieving proper performance and reliability. Errors in the PCB layout cause a variety of misbehaviors including poor output voltage regulation, switching jitter, and even device failure. Issues like these should be avoided at […]

This Design Idea gives two versions of an indicator light that changes from green to red as a battery discharges. There are many circuits that do this sort of thing, but all the ones I have seen are too complex and costly for my taste. This DI shows a method that uses an absolute minimum […]

Microdot – wrist watch LED pattern timepiece Another RGB Sunset Productions production! This project is a circuit board for making a wrist watch size version of my minidot clock: http://www.instructables.com/id/EEGLXQCSKIEP2876EE/ with a few more functions more applicable to a portable device. A lot of help and suggestions came from ians 01/\/atch binary watch: http://www.instructables.com/id/EYNTHEN1WUEP287APH/ Eaglecad […]

Electronics is the technology mainly concerned with the development of circuits for television, personal computers, and all other electronic equipment. This kind of electronic equipment makes use of silicon chips or transistors and other basic electronic components. Electronics mini projects for engineering students are developed by concentrating on many application areas such as control systems, […]

Manual intervention to a PCB is usually always visible. With modern „No-clean“ fluxes it´s not that obvious as in the past. But still it doesn´t make resulting look of a PCB better. However, probably more important is the fact, that soldering residues are a potential risk, especially in humid environment – as they may cause […]

USB Power supply Active Load Tester or short PAL Tester is unit designed for testing the quality of the power supplies. Idea was to create low-cost, precise device for simultaneous measurement of Voltage and Current drawn from the device under test. This is one of my weekend projects that I have decided to release to […]