Illuminated Crosswalk Safety Light Circuit

Oct 31, 2016

The article explains a simple illuminated crosswalk safety light circuit for ensuring a safe walking passage for the user amidst heavy traffic. The idea was requested by Mr. John.

RFID Security Lock Circuit using Arduino

Oct 29, 2016

In this article we will see how an Arduino based RFID reader circuit could be used for controlling a relay, which in turn could be used in security door lock applications.

Triac Phase Control using PWM Time Proportional Circuit

A triac phase control using a PWM circuit can be useful only if it's implemented using a time-proportional format, otherwise the response could be haphazard and inefficient.

Make this RFID Circuit using Arduino

Oct 27, 2016

In this article we are going to take a tour on RFID circuit technology. We will be exploring how RFID tags and readers work, how to interface RFID module (RC522) with Arduino and extract some useful information from the RFID tags.

Barometric Pressure Sensor Circuit using Arduino

Oct 26, 2016

In this article we are going to explore, what is a Barometer and how to interface a barometric BMP180 sensor with Arduino. We will also be exploring some of its important specification and finally we will learn how to predict weather using barometric readings.

Remote Controlled Game Scoreboard Circuit

Oct 25, 2016

The post explains how to build a simple remote controlled game scoreboard circuit with two digits for facilitating the user a hassle free changing of the digits remotely, during a game or a match. The idea was requested by Mr. Richard.

LiFi Circuit for Transmitting USB Data

Oct 23, 2016

If you are wondering how a LiFi concept could be used for transmitting USB data, this article will provide with all the details you required.

Capacitive Power Supply Circuit with Maximum Protection

Oct 18, 2016

A comprehensive capacitive power supply circuit having a zero crossing detector, a surge suppressor and voltage regulator is discussed here, the idea was was submitted by Mr. Chamy

Transistor UPS Circuit with Charger

The article details a simple transistor based UPS circuit with a built-in battery charger circuit, which can be used for getting an uninterruptible mains power output cheaply, in your homes and office, shops etc. The circuit can be upgraded to any desired higher wattage level. The idea was developed by Mr. Syed Xaidi.

MPPT Circuit using LM317 IC

Oct 17, 2016

To make this simple MPPT circuit we first modify a standard LM317 power supply circuit into a buck converter then configure it with a solar panel for implementing an MPPT function.

LM317 Variable Switch Mode Power Supply (SMPS) Circuit

Oct 15, 2016

So far we have studied LM317 based linear power supply circuits, here we will learn how an LM317 can be executed as a variable switch mode power or SMPS with zero loss.

How to Make LED Air Pollution Meter Circuit

Oct 10, 2016

In this project we are going to construct an air pollution meter using MQ-135 sensor and arduino. The pollution level in the air is indicated by series of 12 LED. If higher the number of LEDs glows, the higher the pollution content in the air and vice versa.

Transformerless 0-400V Power Supply Circuit

Oct 7, 2016

A cool 0-400V variable transformerless power supply circuit can be built using just a single chip LR8, and a few resistors. The IC features  a built in current control stage which makes the design extremely safe even for critical electronic circuits.

LPG Leakage SMS Alert Circuit using Arduino and MQ-135

Oct 5, 2016

In this article we are going to construct an GSM based LPG leakage SMS alert circuit using Arduino, which alerts the recipient via SMS and surrounding people via beep, when LPG gas gets leak out of LPG cylinder or leak due to improperly closed valve.

Foot Activated Staicase Light Circuit

The post explains a simple foot activated staircase light circuit comprising of a chain of LEDs which activate sequentially in response to each climbed step. The idea was requested by Mr. Dwayne.

Door Security Alarm Circuit

Oct 2, 2016

The door security alarm circuit discussed in this article alerts the user whenever the door fitted with the circuit is opened or closed or even moved from its original locked position.

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