Remote Controlled Fan Dimmer Circuit

Sep 30, 2016

A simple yet effective infrared based remote controlled fan dimmer circuit can be built using a couple of IC s and triacs, the following articles explains the details.

How to Make a DC Voltmeter using Arduino

Sep 29, 2016

 In this post, we are going to construct a voltmeter using Arduino where the readings are displayed in 16x2 LCD.

Bluetooth Car Ignition Lock Circuit

Sep 28, 2016

This circuit will allow the user to lock his car ignition using his phone Bluetooth, meaning the ignition can be locked/unlocked only through a specific code from the user's cellphone Bluetooth.

Solar Pocket LED Light Circuit

Sep 22, 2016

The post explains a simple low cost solar pocket LED light circuit which could be used by the needy and, underprivileged section of the society for illuminating their houses at night cheaply. The idea was requested by Mr. R.K. Rao

"WELCOME" Chasing LED Display Circuit

The post explains how to make a chasing "WELCOME" display circuit sign board, which illuminates each alphabet sequentially until all the 7 alphabets are lit and then the whole display shuts off, the cycle continues permanently as long as the circuit is powered.

MQ-135 Air Quality Sensor with Arduino

Sep 21, 2016

In this article we are going to learn how to interface air quality sensor MQ-135 with Arduino. We will see overview of the sensor and construct a project which detects LPG gas leakage and see some relevant readings in serial monitor.

Transformer Winding Counter Circuit

Sep 20, 2016

The post details how to make a simple transformer winding counter circuit using ordinary LEDs and also through an advanced digital display circuit. The idea was requested by one of the dedicated readers of this blog

Simple IC 555 Inverter Circuit

Sep 15, 2016

The post explains how an ordinary IC 555 astable multivibrator could be used to make an inverter without involving complex stages.The idea was requested by Mr. ningrat_edan.

GSM Fire SMS Alert Circuit using Arduino

Sep 14, 2016

 In this article we are going to construct a GSM fire alert circuit system using Arduino and DHT11 sensor, which will alert the user via text message (SMS), regarding a fire hazard within the premise where it is installed.

How to Receive SMS Using GSM Modem and Arduino

Sep 12, 2016

 In this post we are going to learn, how to receive SMS using GSM modem, and Arduino. 

Calculate Induction Heater LC Resonance Frequency and Current

Sep 11, 2016

In the previous post we elaborately learned how to design an induction heater circuit, continuing ahead here we learn how to calculate induction heater LC resonance frequency, and its wire current handling capacity.

Designing an Induction Heater Circuit - Tutorial

The article explains a step by step tutorial regarding designing your own homemade induction heater circuit, which can be also used as an induction cooktop.

How to Send SMS Using GSM Modem and Arduino

In this article we are going to learn, how to send SMS using GSM modem which is controlled by Arduino. Let us see, what GSM modem is, how to interface it with Arduino, how to send SMS with the setup.

Bluetooth PWM Motor Controller Circuit

Sep 8, 2016

The post explains how to use Bluetooth technology for transmitting PWM wirelessly, the circuit application could be used for controlling various appliances such as motors, lights, RC gadgets etc using your Android phone.

Password Security Lock Circuit Using Arduino and 4x4 Keypad

Sep 7, 2016

In this post we are going to construct a password security lock circuit, which can be accessed by a 6-digit password. To be more precise it is alpha numeric password.

Sunrise Sunset Simulator LED Circuit

Sep 6, 2016

In this post we learn how to make a sunrise/sunset simulator circuit using LEDs and just a couple of BJTs. The idea was requested by Mr. Jerry

How to Interface 4x4 Keypad with Arduino

Sep 5, 2016

In this post we are going to learn how to interface a 4x4 keypad with Arduino. We are going to see what is a keypad, how it is constructed and a how to program the Arduino to receive keystrokes form the keypad and print them in serial monitor.

Generating Electricity from Piezo Transducer

Sep 4, 2016

Generating electricity from piezo could be as easy as making a flick with your finger..... curious to know how? Let's learn more about this amazing device called piezo, which can be used for generating music as well as electricity.

Push-Button Variable Power Supply Circuit - LM317 Application

Sep 3, 2016

In this post we learn how to make a LM317 variable power supply circuit with push buttons for enabling digitally controlled voltage selection. We eliminate the use of mechanical pot and replace it with a couple of push buttons for the up/down selection of the desired voltage levels.

Simple Calculator Circuit Using Arduino

Sep 2, 2016

In this post, we are going to construct a calculator using Arduino, which can perform far complex arithmetical calculation than an ordinary calculator.
 

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