Why switch to ARM ? Introduction to ARM Micro Controllers

Pratik Panda June 15, 2016 1 Comment
It is true that beginners should start off with 8051 or AVR to get a clear understanding of how microcontrollers work. The documentation of these devices is very readable and simple to understand. But if you have worked with these architectures for some time, you have probably felt your creativity being throttled by the resource constraints that these devices impose on you. 512 bytes of RAM?! What can you possibly do with 512 bytes? Some people might argue that...
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Interfacing 8×8 LED Matrix with Arduino

john June 15, 2016 6 Comments
LED matrix displays can be used to display almost anything. Most modern LED sign boards uses various types of matrix boards with controllers. In this tutorial we are going to interface a single color 8×8 LED matrix with Arduino and display a few characters in it. 8×8 matrix consists of 64 dots or pixels. There is a LED for each pixel and these LEDs are connected to total of 16 pins. You can identify the pin out and circuit...
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Proteus Tutorial – Switches and Relays

Narasimha March 8, 2017 1 Comment
 In this tutorial, we will be learning on how to use the “Switch” component in Proteus simulation software. In case you have not got on through the basics of Proteus, here is the link – Proteus PCB Design and Simulation Software – Introduction.  1.1 Basic Operation of a switch A switch is component that is used to either make or break a circuit path. There are different types of Switches which can be operated (i)  Manually by mechanical input (ii) Electrically...
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Top 5+ Wireless Motion Sensor and Burglar Alarm products review

john April 21, 2016 No Comments
Wireless motion sensor alarms are commonly used in homes or office premises as a security protection device. As the name suggests, an alarm is set to turn on, when the device detects the presence of someone (human or animal) in the range of the device, when they shouldn’t be. The movement or motion of the intruder is detected by the sensor and the signal is transferred to the alarm section for warning the concerned person about the threat. Why...
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Proteus PCB Design and Simulation Software – Introduction

Narasimha March 8, 2017 11 Comments
Proteus is a simulation and design software tool developed by Labcenter Electronics for Electrical and Electronic circuit design. It also possess 2D CAD drawing feature. It deserves to bear the tagline “From concept to completion”. About Proteus It is a software suite containing schematic, simulation as well as PCB designing. ISIS is the software used to draw schematics and simulate the circuits in real time.The simulation allows human access during run time,thus providing real time simulation. ARES  is used...
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Digital Door Lock – Password based Electronic Code Lock using 8051

jojo March 18, 2016 6 Comments
This Digital Door Lock – is simply a password based electronic code lock designed using 8051 micro controller, a keypad and a 12 volt dc relay. In this article, we have designed a simple digital door lock using 8051 -which can be used as a security checking system to limit access to an area/room only for certain individuals with the password. So our digital door lock project can be called with a very wide range of names like a...
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Interfacing stepper motor to 8051

praveen March 11, 2016 1 Comment
Interfacing stepper motor to 8051 microcontroller. This article  is about interfacing stepper motor to 8051 microcontroller. Many guys were asking here to show how to interface stepper motor to 8051 microcontroller. I think this is the time. Stepper motors are widely used in industrial, medical, consumer electronics application. In simple words, anywhere precision rotation or positioning of an object is needed. Stepper motor. Stepper motor is a brush less motor which converts electrical pulses into mechanical rotation. As the name...
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burglar alarm with sms alert - circuit diagram

PIR sensor based burglar alarm using 8051 with SMS alert.

praveen August 10, 2016 1 Comment
PIR sensor based burglar alarm with SMS alert. This project is about a PIR sensor based burglar alarm with SMS alert. The circuit senses the intrusion using a PIR sensor and sends an SMS to to the given mobile number when an intrusion occurs. The number of intrusions taken place is also displayed on an LCD display. An 8051 microcontroller is used for monitoring the PIR sensor and sending the alert message using the GSM module. An alarm is also...
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Segments of Seven Segment Display

Arduino and 7 Segment Display – Interfacing Tutorial

jojo March 3, 2016 3 Comments
In this article, we are publishing a tutorial on how to interface seven segment LED display to Arduino. Seven segment displays are used in many embedded system and industrial applications where the range of outputs to be shown is known beforehand. Basic 1 digit seven segment display can show numbers from 0-9 and a few characters. 7 segment displays are of different types; especially they differ in the number of digits/character it can display. Basically a 7 segment display is...
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LM35 and Arduino – Temperature Measurement and Display on LCD

jojo March 10, 2016 19 Comments
In this article, we are presenting a tutorial on how to interface LM35 and Arduino along with its program. Once we successfully interface arduino and lm35, we will go on to build a temperature display using arduino and a 16×2 LCD module which constantly monitors temperature around the measurement field/range of LM35 and displays the same on LCD module. So lets get to building the project! LM35 is an analog, linear temperature sensor whose output voltage varies linearly with...
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Burglar Alarm using Arduino and PIR Sensor- with SMS Alarm using GSM Module

jojo December 23, 2016 20 Comments
In this tutorial, we are building an interesting application using Arduino and PIR Sensor. A Burglar Alarm – is basically an intruder alarm or an anti theft alarm. So this project is all about building an anti theft alarm or an intruder alarm using Arduino and PIR sensor. It is possible to enhance this project with many features like adding a GSM module to send SMS alerts to specified mobile numbers when an intruder is detected (when a motion...
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Gsm Module and Arduino

How to Interface GSM Module to 8051 Micro Controller-Send and Receive SMS

praveen December 23, 2016 1 Comment
This article is about interfacing GSM module to 8051 microcontroller. GSM module has become a very commonly occurring hardware in embedded system applications and the knowledge on how to interface GSM module with microcontroller is very essential if you want to become a good embedded system designer. GSM module GSM (Global System for Mobile communications) module is basically a modem which accepts a SIM card and works in the GSM network provided by the operator just like a mobile...
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PIR Sensor - Motion sensor/detector to Arduino

Interfacing PIR Sensor to Arduino – Connect Motion Sensor/Detector to Arduino

jojo February 24, 2016 3 Comments
In this article, we are going to learn how to interface/connect PIR Sensor or Passive Infrared Sensor to Arduino. We have written a tutorial on how to interface PIR sensor to 8051 previously in CircuitsToday! So a PIR sensor which is also known as Pyroelectric sensor or Passive Infrared Sensor is basically an electronic sensor employed in motion detecting applications. A PIR sensor detects or measures IR (Infra Red) radiations emitted by any object inside its field of view....
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Interfacing MQ2 to Arduino- Gas Sensor for Smoke-Butane-CH4 and LPG

jojo February 23, 2016 4 Comments
In this article, we are going to learn how to interface MQ2 Gas Sensor with Arduino. MQ2 is basically a general purpose gas sensor (similar to MQ5) which can sense a broad range of gases like LPG, Butane, Methane(CH4), Hydrogen and in addition to these gases MQ2 is sensitive to smoke as well. In a previous article, we have wrote a tutorial on Interfacing MQ5 Gas sensor to Arduino. Both MQ5 and MQ2 are basically gas sensors but their...
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Gas Leakage Detector using Arduino and GSM Module with SMS Alert and Sound Alarm

jojo December 23, 2016 63 Comments
We have published lots of interesting arduino projects like GSM based Fire Alarm System , Line Following Robot, RFID Based Access Control System and many other useful projects. This time, we are publishing a highly useful home application – Gas Leakage Detector using Arduino and GSM Module with SMS Alert and Sound Alarm.  We have published an LPG  Sensor Project using Arduino and MQ2 sensor before – which senses lpg leak and produces sound alarm. The project also has...
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Interfacing MQ5 LPG Sensor to Arduino

jojo February 23, 2016 3 Comments
In this guide, we learn how to interface MQ5 Gas sensor (which is a generic Gas Sensor more suited to detect and determine LPG concentrations) with Arduino. In this tutorial, we are using the MQ5 Gas sensor module (which is widely available in market) . This module has two output possibilities – an analog out (A0) and a digital out (D0). The analog out can be used to detect Gas leakage and to measure volume of Gas leakage (by...
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induction cooktop

How Induction Cooktops Work

jojo February 3, 2016 1 Comment
Working of induction cooktops Induction cooktops are very popular in all households. They have lots of advantages over gas and electric cooktops and are more efficient. But have you ever wondered how an induction cooktop works? The working of an induction cooktop is very simple. It has more to do with electrical engineering than electronics but this caught my eye because an induction cooktop, a product that has a billion dollar market, uses a very base level technology for...
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Humidity sensor using 8051

praveen December 19, 2016 2 Comments
Humidity sensor using 8051  (Hygrometer) This project is about a simple humidity sensor based on 8051 microcontroller. Humidity sensor is also called hygrometer. This circuit can sense relative humidity (RH)  from 20% to 95% at an accuracy of 5%. The humidity information is displayed on a 16×2 LCD display. A relay is also provided which is set to be active when the humidity crosses a certain trip point. The circuit is mains operated and it is very easy to...
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RFID Based Access Control System using 8051

jojo October 31, 2017 8 Comments
RFID Door Access Control System using 8051 In this project, we are going to build an RFID Based Access Control System using 8051 Micro Controller. The same system can be named like RFID based door lock or RFID based access management system. If you have been to big hospitals or companies, you might have seen how they used RFID based locks to restrict access to certain areas. In hospitals, only hospital staff with approved RFID tags can access Intensive...
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Microcontroller Based Programmable Data-cum-Temperature Display

praveen February 11, 2016 7 Comments
Microcontroller Based Programmable Data-cum-Temperature Display. LCD display are most widely used in applications like token display machine in malls, supermarkets, restaurants, cafe-houses etc. The project presented here demonstrates the working through wireless by use of Bluetooth technique. This circuit is designed by Mr. Vivek Kumar Kamboj from Haryana. Circuit and working. This circuit uses microcontroller that accepts data via Bluetooth from various types of gadgets like android based smartphones, laptop, etc. The IC1 AT89C51 is the heart of this...
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LiPo battery charger circuit.

praveen September 2, 2015 1 Comment
LiPo battery charger. Li-Po battery or Lithium-Polymer battery is a rechargeable battery based on the Lithium-ion technology enclosed in a flexible pouch. This soft, flexible pouch makes them very light with a compromise in mechanical strength. Li-Po batteries are widely used in applications where weight is a critical factor. The common applications are radio controlled model flight, RC toys, hand held devices etc. The Lithium Polymer battery is evolved from the Lithium Metal Batteries.The main difference is that instead of...
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Nest Thermostat Review

jojo May 3, 2017 No Comments
Nest 2nd Generation Self Learning Thermostat Until recently no one cared about what thermostat they are using. But that is no longer the case. This is the era of smart thermostats, thermostats which can be easily programmed or better self-learning. Nest self learning thermostat is such a programmable, self learning gadget developed by Nest Labs, a company co-founded by former Apple employees Tony Fadell and Matt Rogers in 2010 and was acquired by Google in 2014. The first generation...
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Amazon Echo Review – Is it worth the hype?

jojo February 3, 2016 No Comments
Amazon Echo, easily described as the Siri for your home, is an amazing smart gadget by Amazon for your home. Echo is basically an expertly tuned speaker with wi-fi and bluetooth connectivity. Its hardware is very nice, a 9.25” high cylinder with a woofer and a tweeter and is capable of producing 360 degree omni directional audio. It also has an array of 7 microphones which listen to everything you say from any direction, and its listening skills are...
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ultrasonic water level controller

Ultrasonic water level controller using 8051

praveen July 30, 2015 7 Comments
Ultrasonic water level controller using 8051 microcontroller. A simple water level controller using ultrasonic  range finder module and 8051 microcontroller is discussed in this article.Many projects based on ultrasonic range finder and water level controllers have bee already discussed here. This is just another application of the ultrasonic ranging module. This water level controller can monitor and control water tanks up to 2m deep and the accuracy of measuring is as low as 1cm.  Since no mechanical float switches or...
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How to Build PCB Online using Web Based EDA Tools

jojo December 22, 2016 3 Comments
This is a brief review of the capabilities and ease of use of three of the most interesting, innovative and downright disruptive web-based EDA tools: EasyEDA Upverter Autodesk 123D Circuits (formerly Circuits.io) The same simple astable multivibrator circuit is entered into each tool and the design process followed through simulation (where offered), to PCB layout and Gerber download. For all of the products reviewed, there’s no need to install any software. They all run in any HTML5 capable, standards...
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