microcontroller 12V relay circuit converted to 5V relay under uC control
The BC547B has Vcbo=50V, Vceo=45V, Vebo=6V, where-as the BC548 in original circuit has Vcbo=30V, Vceo=30V, Vebo=5V, rest of the parameters being pretty same as ...
ATmega32u2 USB powered how to ground
Because you are powering the MCU via USB, this common zero voltage should be the same as the supply and therefore connected to the 0V (UVSS) line....
AVR Atmega32 flash verification error
An Atmega32A chip and I`ve been trying to program it with a usbasp for quite a few hours. I can change the fuses and write the program, but verification fails. ...
avr Driving piezo buzzer from MCU pin
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avr Control 5V buzzer using mcu and a single 5 V power supply
A PB-12N23PW-05Q buzzer and I`m trying to use it with ATmega 162. I can`t connect it directly to pin, because from what I`ve read from 162`s datasheet, it can s...
Avr Light Controller
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PIC Microcontroller-Based Electronic Lock
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LCD CLOCK USING 8051 (89s51) Microcontroller
This is a real time clock by using 89c51 micro-controller, clock`s data format is hour:min:sec, and it is displayed on 16x2 LCD, the code has been tested and co...
8 Channel software controlled fanbus with PWM
When speaking of fan control, there are generally 2 ways of doing it, linear control, and pulse-width control. The linear control is the most common. The idea i...
USB Servo
The USB-Servo is a device to control a servo via USB. A servo is a motorized device that is commonly used in remote controlled cars and planes. I built this dev...
Simple AVR Programmer
This is simple to build AVR programmer for Atmel microcontrollers from AVR family. The microcontrollers must support serial programming. AVR programmer is conne...
contruction of personal Radar System using PIC MIcrocontroller PIC18f452
Personal Radar System using PIC MIcrocontroller PIC18f452 is a microcontroller hobby project. The circuit diagram of radar is attached here below seemed a littl...
PIC microcontrollers Online video Lectures
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Remotely Programmable RTC-Interfaced Microcontroller for Multiple Device Control
This project based on Atmel AT89C52 and Dallas real-timeclock (RTC) chip DS12887 can be used to control and remotely program the switching operation of 24 elect...
atmel at89c2051at89c51at89cxx
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Water level controller using 8051
A water level controller based using 8051 is shown in this article. A lot of water level controller projects have been published in this website but the is the ...
Ultrasonic range finder using 8051
A simple ultrasonic range finder using 8051 microcontroller is presented in this article. This ultrasonic rangefinder can measure distances up to 2. 5 meters at...
Digital tachometer using 8051
A three digit contact less digital tachometer using 8051 microcontroller which can be used for measuring the revolutions/second of a rotating wheel, disc, shaft...
ADC to 8051
ADC (Analogto digital converter) forms a very essential part in many embedded projects and this article is about interfacing an ADC to 8051 embedded controller....
Digital Thermometercum- Controller using AT89s52
This standalone digital thermometer controls the temperature of a device according to its requirement. It also displays the temperature on four 7-segment displa...