About: Ibrar Ayyub

Imagination Technologies’ decision to reveal the inner-most secrets of the MIPS microprocessor architecture to academics could dramatically improve the teaching of electronics in universities. The MIPS architecture started off as an academic exercise by John Hennessy at Stanford University, and is the subject of a standard educational book by Hennessy and David Patterson. Imagination University […]

  #include <16F877.h> #device adc=8 #FUSES NOWDT ,XT #use delay(clock=4000000) #include <Lcd_4bit.c> int8 value; void main() { setup_adc_ports(AN0_AN1_AN3); setup_adc(ADC_CLOCK_DIV_2); setup_psp(PSP_DISABLED); setup_spi(SPI_SS_DISABLED); setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1); setup_timer_1(T1_DISABLED); setup_timer_2(T2_DISABLED,0,1); set_adc_channel(0); set_tris_d(0x00); set_tris_A(0xff); Lcd_init(); while(true){ set_adc_channel(0); delay_ms(10); value = read_adc(); // 0-1023 Lcd_row_col(1,0); Lcd_putc(“setpoint=”); hex_bcd(value);lcd_row_col(1,9);sent_Lcd(); delay_ms(50); } }

Features 4-Switch Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT Synchronous Switching: Up to 98% Efficiency Proprietary Peak-Buck Peak-Boost Current Mode Wide VIN Range: 4V to 60V Wide VOUT Range: 0V to 60V (51V LED) ±3% LED Current Accuracy 2000:1 External and 128:1 Internal PWM Dimming High Side PMOS PWM Switch Driver Integrated […]

Imagination is offering universities worldwide free and open access to its MIPS architecture as part of the Imagination University Programme (IUP) called MIPSfpga. Through MIPSfpga, Imagination is offering access to a fully-validated, current generation MIPS CPU RTL in a complete teaching package.CPU architecture is generally taught as part of electronic engineering, computer science and computer […]

This is an instructable on how to build an LED Christmas card using the PIC 10F200 microcontroller. As this PIC has six pins and is the size of an SMD transistor, it is ideal for low profile applications and can easily be reprogrammed as and when needed. In this case I am using the “reverse […]

Everything has now been ordered and paid for – the BooSTicks and the add-ons from Backerkit are all in process or on their way now.  There were a few unexpected minor delays in the process of getting surveys set up and returned, accounts set up and linked and so on, so we don’t expect to […]

This tutorial explains ‘What is a Matrix Keypad ?’ and ‘How to Interface Matrix Keypad with PIC Microcontroller ?’. Matrix Keypad Matrix Keypad is a very useful and userfriendly when we want to design certain applications like Calculator, Telephone etc. Matrix Keypad is made by arranging push button switches in rows and columns. Just imagine, if you want […]

The Joule Thief is such an easy and simple device, but what it does is amazing. It can use a battery that is not usable in any other electronic device and give it life again. It can even take a battery that won’t even power a basic LED by itself when it is brand new […]

#include <16F877.h> #device adc=8 #fuses NOWDT,HS, NOPUT, NOPROTECT, BROWNOUT, NOLVP, NOCPD, NOWRT, NODEBUG #use delay(clock=4000000) #include <Lcd_4bit.c> int16 value1,value2,value3,value4; void main(){ setup_adc_ports(NO_ANALOGS); setup_adc(ADC_OFF); set_tris_d(0x00); lcd_init(); lcd_row_col(1,0); lcd_putc(“Electrical Power”); delay_ms(20); lcd_row_col(2,0); lcd_putc(“Loei Technical “); delay_ms(20); lcd_row_col(3,0); lcd_putc(“www.kchimicro “); delay_ms(20); lcd_row_col(4,0); lcd_putc(“Pic controller “); delay_ms(5000); lcd_Clear(); lcd_init(); while(true){ value1 = 2568; value2 = 1278; value3 = 8887; […]

Step up DC-DC converter is based on LM2577-ADJ IC, this project provides 12V output using 5V input, maximum output load 800mA. The LM2577 are monolithic integrated circuits that provide all of the power and control functions for step-up (boost), fly back, and forward converter switching regulators. The device is available in three different output voltage […]