LCD Module in 4-bit Mode
In many projects use is made of alphanumeric LCDs that are driven internally by Hitachi s industry-standard HD44780 controller. These displays can be driv.....
AVR Dongle
This circuit is intended to program AVR controllers such as the AT90S1200 via the parallel port. The circuit is extremely simple. IC1 provides buffering f.....
Cortex M3 MCU features USB firmware protection
Atmel joins NXP, ST, Luminary Micro (now TI), and Toshiba as a microcontroller vendor to use the ARM Cortex-M3processor core. As a presumed replacement for some...
Electronics Engineering Herald - online magazine of electronics -home
Embedded Systems is simply the brain of the most of the electronics based systems to access, process, store and control the data. Few simple electronics circuit...
Ultimate contact debouncer
Contact bounce is a critical issue when interfacing switches or relays to a digital control system. The ultimate contact debouncer is an easy-to-use and flexibl...
direct driving LCD
The LCD in question appears to have more pins than the microcontroller, I could not expand the image to get a better look. Unless you are adamant about using th...
LCD contrast controlled by LCD
Hi!!! What is the frequency (through Low Pass Filter) recomended for the contrast of a LCD? I want to control the contrast of a LCD with the PWM of a.....
interface an LCD to 89c51 using 4 bit mode
how to interface an lcd to 89c51 using 4 bit mode. am using lampex16200 pls send me manual of this controller.....
graphical LCDs with a microcontroller
Hello to everyone! How I can control these graphical LCDs with a microcontroller? Is there any datasheet?.....
Atmega 8515 programming help
i am going to programmer my atmeg8515 Mc and i am searching for good and easy parallel programmer for it also i want to know the assembly instructions .....
interfacing buzzer with 8952
hey! how to interface a +5V buzzer with IC 89S52. someone suggested me to use two bc547 npn transistor. this is its schematic. buzzer interface.png i.....
Microcontroller-based: Electric fan switching relay or triac
I have a project in which i will control the speed of the electric fan (220Vac, 60W, 5A max.) through the microcontroller automatically depending on.....
USB PICKit2 programmer
schematic of board with PIC16F84 and also other PICs which can be connected to this USB PICKit2 programmer If someone has such please show me, i`d appreciate it...
AT89xx051 PROGRAMMER
It requires a 15VDC adapter. An electrolyte capacitor is needed across the regulator input. If the capacitor is added in 7812`s OUT pin w. r. t. ground, then a ...
Triton Cooling Systems
The Lambda II is based upon the Atmel 8535 chip, which operates at 4 MHz and contains 8K of RAM. This chip was chosen over other brands such as Motorola or Pic,...
499 Robot
The robot consists of modules controlled by a main controller. The main microcontroller is an 18-pin, 8-bit, PIC16F84 Flash microcontroller operating at 4MHz. T...
Basic circuit for PIC16F877A
To operate a microcontroller, you need some basic components to support it and the circuit we call it basic circuit. The components needed are very common and y...
Simple LED blinking using PIC16F877A
This is a simple LED blinking project using PIC16F877A. Basically there are only 2 LEDs, connected to PIC16F877A and the source code is being modified from the ...
A Tiny 80(C)32 BASIC Board
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MIDI Sync Box
Everything works just great. The final software is 930 lines of assembler. I also learnt how to use ProTel so I could draw up the final circuit properly. Here`s...