Category: Electronics Projects

12v, 7Ah Smart Battery Charger with PCB Diagram

Engineeering Projects
circuit diagram of 12V 7ah smart battery charger

Here is a 12V, 7Ah smart battery charger circuit which is also referred to as a smart charger uses three-stage of charging i.e. bulk stage, absorption stage, and float stage. Normal battery charger technology uses single-stage battery charging technology i.e. only charge the battery up to the maximum charging voltage preset by the charging circuit. Now here is a 12V, 7Ah smart battery charging circuit which is also referred to as a smart charger uses three-stage of charging i.e. bulk stage, absorption stage, and float stage. You may also like Arduino…

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9V DC to plus/minus 5V DC converter

Engineeering Projects
circuit diagram of dual polarity 5 v from 9V

Presented here is a simple circuit “9V DC to plus/minus 5V DC converter” that can convert a 9V battery to plus/minus 5V DC supply using LM7805 and ICL 7660. The operational amplifier requires a dual polarity power supply (+Ve and -Ve) because it has to swing on the output i.e. it does not swing into action during the negative cycle of signal if the negative source is not given. Thus, for the proper operation, we need a dual polarity power supply. Circuit Description of 9V DC to plus/minus 5V DC converter While…

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GPS Navigator Circuit using ATmega 16

Engineeering Projects
author prototype of GPS navigator

The system “GPS Navigator Circuit using ATmega 16” is implemented to detect the position/location of anything under consideration, and hence it is suited for navigation activities. Introduction to GPS Navigator Circuit using ATmega 16 The term GPS has been so popular in recent times. The credit for its quick recognition is due to the list of multiple features this system offers. Elaborated as a Global positioning system (GPS) it has already been established as a reliable technology that has made our lives much easier. Just with the involvement of GPS, we…

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GPS and GSM based Vehicle Tracking System

Engineeering Projects
circuit diagram of GPS and GSM based vehicle tracking system

The project GPS and GSM-based Vehicle Tracking System uses Global Positioning System (GPS) and global system for mobile communication (GSM), which makes this project more economic than implementing a communication system through GPS satellites in a two-way GPS communication system. Introduction to GPS and GSM based Vehicle Tracking System Tracking has now been a recent trend followed everywhere. This process helps us to collect details and at the same time prevent robbery of devices being tracked. The project ‘GPS and GSM based Vehicle Tracking System’ which employs a microcontroller as its…

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Arduino Fingerprint Sensor Lock

Engineeering Projects
arduino fingerprint sensor circuit

The project “Arduino Fingerprint Sensor Lock” is simply fabricated around Arduino board. Not only to ensure door security, this project also make certain to assist in fields like forensics, crime investigation, personal identification, attendance system and there is a lot more. Introduction of Arduino Fingerprint Sensor Lock Recently, there has been recorded tremendous increase in the crime rate everywhere in the world. This issue is turning more severe every day. To get away with this problem, we decided to take help from technology and there this project “Arduino Fingerprint Sensor Lock”…

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Microcontroller Based Solar Charger

Engineeering Projects
circuit diagram of microcontroller based solar charger

The project ‘Microcontroller Based Solar Charger’ has been so popular, that everyone knows about it. Here we will discuss the construction details and areas where this project is applicable. With excessive non-renewable energy consumption, we humans are facing plentiful difficulties. Renewable sources of energy are considered our only hope to rise from this situation. Solar energy is one of them which have spread all over for its easy availability, effective cost, and reliability. The project, ‘Microcontroller Based Solar Charger’ is the finest example to demonstrate the easy utilization of resources…

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Earthquake Detector using Arduino

Engineeering Projects
output of earthquake detector using arduino

Earthquake Detector using Arduino:- Circuit Diagram, working and circuit description with result and software code including library file of Earth Quake Detector They say, ‘Prevention is better than cure. This statement goes perfectly with the events whose probability of occurrence is highly possible. Earthquake is one such disaster that comes as an evil fate and sweeps away precious human lives and civilization, it is an unpredictable phenomenon whose occurrence cannot be avoided, but at least we can take measures to minimize the adverse effect of its consequences. In doing so,…

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Greenhouse Automation System | Automated Greenhouse

Engineeering Projects
output of greenhouse automation system

Greenhouse Automation System | Automated Green House: Complete Circuit Diagram using P89V51RD2 microcontroller, Source Code, Working Principle, and Complete Description   Introduction to Greenhouse Automation System | Automated Greenhouse Technologies have almost reached everywhere, be it in the technical fields or the agricultural fields. One of the specified sectors where this technology has created great impact is Green House, as we call it. Modern technologies are used to monitor certain environmental conditions which is a must to ensure optimum growth of plants in the greenhouse, enhanced crop productivity along proper utilization…

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Clock Signal Generator Circuit

Engineeering Projects
circuit diagram of clock generator using op-amp

Circuit diagram of  Clock Generators using Astable Multivibrator,  Clock Generator using Timer IC 555,  Clock Generator Using Digital Inverter IC,  Clock Generator using OP-AMP Objectives of Clock Signal Generator You might have noticed a common thing in most digital integrated circuits, which is a frequent need for a continuous pulse train defined as a clock pulse for the precise operation of the circuit. Since most sequential logic devices such as flip-flops, counters, registers, etc. favor a synchronous mode of operation, the need for the clock is felt more pronounced in…

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Call Indicator Using MC68HC705J1A Microcontroller

Engineeering Projects
Call Indicator Using MC68HC705J1A Microcontroller circuit

Intercoms and calling bells fit properly only in the luxurious hotels, lodges and high class buildings. In small vicinity like small hotels, offices and clinics, these are not the correct options to choose for communication between the working/assisting staffs and people. It is all because of the cost and the fact that this provision can be made for limited number of points and other alternatives are chosen over it i.e. call indication systems. In early days, such call indications systems employed multiple distinct paths/cables to connect each call point to…

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