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....
read more

Interfacing MQ2 to Arduino- Gas Sensor for Smoke-Butane-CH4 and LPG

jojo February 23, 2016 3 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...
read more

Gas Leakage Detector using Arduino and GSM Module with SMS Alert and Sound Alarm

jojo December 23, 2016 22 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...
read more

Interfacing MQ5 LPG Sensor to Arduino

jojo February 23, 2016 2 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...
read more
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...
read more

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...
read more

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...
read more

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...
read more

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...
read more

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...
read more

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...
read more
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...
read more

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...
read more
RFID card

Interfacing RFID to 8051microcontroller

praveen July 29, 2015 1 Comment
Interfacing RFID  to 8051 . RFID or Radio Frequency Identification is a method in which electromagnetic waves are used for transmitting data for the purpose of identifying tags attached to objects. An RFID system consists of a transmitter (tag) and a reader.The tag is encrypted with a unique code and the reader scans this code for the identification purpose. The tags are generally of two types: active and passive. Active tags have a battery fitted to it and it transmits the unique...
read more
interfacing PIR sensor and 8051

Interfacing PIR sensor to 8051

praveen February 25, 2016 7 Comments
Interfacing PIR sensor to 8051 microcontroller. PIR sensors are widely used in motion detecting devices. This article is about interfacing a PIR sensor to 8051 microcontroller. A practical intruder alarm system using PIR sensor and 8051 microcontroller is also included at the end of this article. Before going in to the core of the article, let’s have a look at the PIR sensor and its working. PIR sensor. PIR sensor is the abbreviation of Passive Infrared Sensor. It measures the...
read more
GSM based Fire Alarm Project

GSM based SMS Alert Fire Alarm System using Arduino

jojo August 10, 2016 96 Comments
In this article,we are going to build a Fire Alarm System using Arduino, LM35 Temperature Sensor and GSM Module. The objectives of this fire detector using arduino is to sense the surroundings for occurrence of fire with help of LM35 temperature sensor, and send 3 SMS alerts to two mobile numbers stored inside the arduino program if fire is detected (using GSM Module). We have developed a very good tutorial on how to interface GSM Module with Arduino and send/receive...
read more

Simple RFID based Door Lock using Arduino

jojo April 7, 2015 6 Comments
Its quiet fun to work with RFID based projects! In the previous article, we saw how to interface RFID with Arduino. Interfacing is the first step to create any useful project. So why don’t we create an RFID based Access Control System or an RFID based Door Lock using Arduino? The system I have designed here is a simple version of the project. This project can be enhanced with a lot of features (which I will be doing in...
read more

Interfacing RFID with Arduino – How to Read RFID Cards using Arduino

jojo March 26, 2015 4 Comments
In this tutorial, we are dealing with yet another interfacing technique. This time we are interfacing an RFID Reader which can read RFID Tags to Arduino. RFID is Radio Frequency Identification. An RFID reader is used to read RFID tags (which contain certain unique data stored in a chip). An RFID reader and an RFID tag, both have a coil surrounding them.  When an RFID tag is shown near an RFID Reader, it collects the unique tag data (a...
read more

How to Interface GSM Module to Arduino-Send and Receive SMS

jojo December 23, 2016 63 Comments
In this article, we are going to see how to interface GSM Module to Arduino. There are different kinds of GSM modules available in market. We are using the most popular module based on Simcom SIM900 and Arduino Uno for this tutorial. Interfacing a GSM module to Arduino is pretty simple. You only need to make 3 connections between the gsm module and arduino. So lets get to business! A GSM Module is basically a GSM Modem  (like SIM...
read more

Frequency counter using arduino

praveen February 19, 2015 11 Comments
Frequency counter using Arduino (upto 40KHz). Many guys here were asking for a frequency counter and at last I got enough time to make one.  This frequency counter using arduino is based on the UNO version and can count up to 40KHz. A 16×2 LCD display is used for displaying the frequency count. The circuit has minimum external components and directly counts the frequency. Any way the amplitude of the input frequency must not be greater than 5V. If...
read more

IPCA Electronics Expo 2015 – Revolutionizing the Make in India campaign

jojo January 7, 2015 2 Comments
A new year has began and people all over the world are looking forward with good hope. What’s in cards for people in the Electronics industry ? Well, the 8th IPCA Electronics Expo India scheduled to happen on August 20-22, 2015 is definitely an event to look forward. This event attended by industry leaders in different sectors of electronics is all set to take place in Pragati Maidan, New Delhi, India. IPCA Electronics Expo’s aims to provide the electronics...
read more

Interfacing pressure sensor to arduino

praveen August 14, 2017 6 Comments
Interfacing SPD005G pressure sensor to arduino This article is about interfacing pressure sensor to Arduino. The pressure sensor used here is SPD005G from Smartec . SPD (Smart Pressure Device) is a series of silicon based pressure sensors suitable for industrial as well as house hold applications. These sensors are generally available in plastic inline or dual inline packaging. SPD sensors are generally available in two operation modes namely gauge type and absolute type. In gauge type, the pressure is...
read more

We Are Launching An Online Store to Shop Electronic Kits,Boards and Components

jojo May 28, 2015 10 Comments
Hi Everyone, Today we are announcing a happy news in CircuitsToday. We are launching an Online Store at Store.CircuitsToday.com We will be Live from today, 18th December 2014. We are launching with only 8051 Micro controller based Project Kits for Engineering Students and Hobbyists. We will be adding more inventories very soon in our online shop. You can expect popular and commonly used products for sale in coming months. WE WILL BE SELLING MAJOR ELECTRONIC COMPONENTS DEVELOPMENT KITS  PROGRAMMERS...
read more

Digital Code Lock using Arduino with LCD Display and User Defined Password

praveen December 5, 2014 38 Comments
We have published a digital code lock using arduino some weeks before. This one is a little different. The earlier version was based on a defined password, where the user can not change it. Moreover there was no LCD display interfaced with the project to output lock status. This project is a much improved version of the same digital code lock which comes with a user defined password and LCD display. The user will be prompted to set a...
read more

Arduino Projects -The Big List of Arduino Based Projects

jojo September 21, 2017 11 Comments
In this article, we compile all the best and interesting projects we have developed using Arduino. These days Arduino projects are used for academic course fulfillment as well. In any case, Arduino is a very interesting platform to build real world projects. List of Arduino Projects Gas Leakage Detector with GSM Module for SMS Alert and Sound Alarm  An Arduino Uno board is interfaced with  a MQ5 gas sensor and GSM Module in this project. This project – named...
read more