Electronic Code locking system using PIC 16F877 Mircocontroller

Electronic code locking system is extremely useful in protecting our precious possessions and can be installed anywhere with bit of engineering in it. We are widely familiar with the Password based e-locks and might have installed in our house. But we are going for Electronic locks made by any company when you can make one by your own. This project demonstrates you how to make a PIC microcontroller based si ...

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Peregrine aims at LTE-A handsets with antenna tuning

SAN DIEGO--(BUSINESS WIRE)--Peregrine Semiconductor Corporation (NASDAQ: PSMI), a fabless provider of high-performance radio frequency integrated circuits (RFICs), today announced a single-pole, single throw (SPST) antenna tuning switch for LTE-Advanced (LTE-A) smartphones. This latest addition to Peregrine’s series of tuning devices leverages Peregrine’s UltraCMOS® process using the HaRP™ and DuNE™ enhance ...

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Micrel wins Wheels design-in in Malaysia

General Description The MICRF213 is a general purpose, 3.3V QwikRadio® Receiver that operates at 315MHz with typical sensitivity of -110dBm. The MICRF213 functions as a super-heterodyne receiver for OOK and ASK modulation up to 7.2kbps. The down-conversion mixer also provides image rejection. All post-detection data filtering is provided on the MICRF213. Any one of four filter bandwidths may be selected ext ...

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Major Electronic Peripherals Interfacing to Microcontroller 8051

Interfacing is one of the important concepts in microcontroller 8051 because the microcontroller is a CPU that can perform some operation on a data and gives the output. However to perform the operation we need an input device to enter the data and in turn output device displays the results of the operation. Here we are using keyboard and LCD display as input and output devices along with the microcontrolle ...

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Designing Electronics in Spain

Hi all! After a couple of months with a lot of work, I come here again with the last board I develop before Christmas. It’s a dual USB serial and I2C converter based on two MCP2221 Microchip 2.0 USB-Serial bridges. I develop it as a need on my work with the last project I’m involved. I need to monitor a serial communication between two devices. With only one converter, I must choose between RX and TX lines ...

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Things heat up for self-destructing electronic devices

Expanding on previous research into electronic devices that dissolve in water once they have reached the end of their useful life, researchers at the University of Illinois have developed a new type of "transient" electronic device that self-destructs in response to heat exposure. The work is aimed at making it easy for materials from devices that usually end up in landfill to be recycled or dissolved compl ...

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Electronic Live Capture Mousetrap

A mousetrap is a type of animal trap specialize to catch small animals, particularly rodents like rats, mice, hamsters, etc. This project is a kind of mousetrap that is intended to keep a captured animal alive. In this way, the hunter can release the captured animal later to the wild. The PIC12F683 microcontroller acts as the heart of the project; it is programmed to meet function of the design. The sensor ...

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Circuit-Zone.com – Electronic Projects

For a long time I needed a good programmer pussy, even if it is programming, so from time to time the application gets where it is used. So I decided to build the programmer. I chose between a couple of projects from different authors, but eventually won PICkit2. Microchip released the schema directly in the user manual for the programmer. On the Internet there are multiple versions of the programmer, it's ...

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Circuit-Zone.com – Electronic Projects

Rotary encoders are very versatile input devices for microcontroller projects. They are like potentiometers expect of digital nature and unlike analogue potentiometers they never wear down. Rotary encoders not only provide 360 degrees of rotational freedom they also allow digital positioning information to be gained without the use of analogue to digital converters (ADCs). When using rotational encoders in ...

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Electronic Quiz Buzzer Circuit Diagram using PIC Microcontroller

Usually high level quiz competitions are very much time-oriented as it becomes significant to determine who has answered first. So here we’ll see how to make a buzzer system that helps to decide the winners. Actually I designed this circuit of buzzer for quiz program conducted in our area and then I thought it may help someone, so I decided to introduce it here. This game show buzzer circuit uses PIC16F877A ...

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