About: Ibrar Ayyub

kaOS project is real-time, multithreaded, preemptive operating system for the Atmel Mega32 microcontroller. It can loads and executes programs from a Secure Digital or MMC card. The system waits for a card to be inserted and a reset button to be pressed, at which point a program is loaded from the card and executed. At […]

This 3-dimensional graphics display system which named as MaJaTron consists of 125 RGB LEDs arranged in a cube of 5x5x5 dimension. Each LED is a multicolor Red, Green and Blue LED and the control circuit of the system can individually control the intensity of each color, thereby, creating a full color, graphics system. Each LED […]

A GLCD connected to an AVR microcontroller The PVG120602EGE is a 128×64 pixel graphic (grey) LCD with lightblue EL backlight and two KS0108 controller chips and one KS0107 line (colums) driver (64 display lines COM1 – COM64) The first KS0108 drives segments 1 to 64 (Y1 – Y64), the second drives segments 65 to 128 […]

HAUPPAUGE, NY (PRWEB) August 18, 2004 SMSC (Nasdaq: SMSC), a leading semiconductor company delivering innovative system solutions spanning analog, digital and mixed-signal technologies, today introduced the SCH3112, SCH3114 and the SCH3116, a family of pin compatible system controller hub chips. The suite of Input/Output (I/O) controllers delivers a more flexible design that enables system design […]

The open source project allows you to control DC appliances based on the temperature of two thermistor inputs. It uses AVR ATmega48 as main processor. The controller has both green and white LEDs to indicate status. The project output is connected to N-Channel MOSFET, AOD444, for switching with current up to 4A. For higher current […]

Pinning LCD display 1601A: Pin no. Symbol Function 1 Vss GND 2 Vdd + 5V 3 Vo Contrast Adjustment 4 RS H/L Register select signal 5 RW H/L Read/write signal 6 E H->L Enable signal 7 DB0 H/L Data bus line 8 DB1 H/L Data bus line 9 DB2 H/L Data bus line 10 DB3 […]

USBasp is low cost USB in-circuit programmer for Atmel AVR micontrollers. The hardware consists of an ATMega88 or an ATMega8 and a couple of passive components. The programmer uses a firmware-only USB driver, no special USB controller is needed. Its programming speed is up to 5kBytes/sec. USBasp works under multiple platforms: Linux, Mac OS X […]

The many posibilities….Non Multiplexed: 1. One or two displays directly to the i/o’s 2. One display with a 74LS247 3. Two displays with a 74HC595 and two 74LS247 Multiplexed: 1. Two displays with a 74LS247 and 2 i/o’s 2. Two displays with a 74HC595 and 2 NPN/PNP * 3. With a special driver IC e.g. […]

ATxmega programmer has different interface than 8-bit AVRs. It uses PDI interface instead of ISP. If you don’t want to buy new programmer for ATxmega you can try this little hack done by Szu. He uses USBASP (USB in-circuit programmer for Atmel 8-bit AVR controllers) with some modification to program AVR ATxmega. The hack convert […]

Pin numbers: PIN 1 LED SUPPLY VOLTAGE PIN 2 LATCH DATA INPUT B PIN 3 LATCH DATA INPUT A PIN 4 LEFT DECIMAL POINT CATHODE PIN 5 LATCH STROBE INPUT PIN 6 OMITTED PIN 7 COMMON GROUND PIN 8 BLANKING INPUT PIN 9 OMITTED PIN 10 RIGHT DECIMAL POINT CATHODE PIN 11 OMITTED PIN 12 […]