Automatic Inverter Fan Switch ON while Charging and Inverting Modes

Nov 28, 2016

The post explains a simple method of automatically switching ON an inverter fan whenever the unit is operating in the charging mode or inverter mode, in order to ensure optimum cooling of the internal power devices. The idea was requested by Mr. Sudip Bepary.

How to Interface Accelerometer ADXL335 with Arduino

Nov 25, 2016

In this post, we are going to see how to use an accelerometer with arduino and extract useful readings, which will be printed on serial monitor of IDE. We will also be exploring how accelerometer works in a nutshell and its applications.

Remote Controlled Solar Lamp Intensity Controller Circuit

Nov 22, 2016

The post details a simple remote controlled solar lamp intensity controller circuit which can be used for controlling the street lamp LED intensity without practically reaching for the LED box. The idea was requested by one of the dedicated members of this website

IC 555 Inverter with Arduino Hi/Low Battery Shutdown Circuit

Nov 19, 2016

In this inverter design we use a 4017 decade counter and a ne555 timer Ic to generate a sinewave pwm signal for the inverter and an Arduino based automatic high/low battery cut-off with alarm.

GSM Pump Motor Controller Circuit using Arduino

Nov 18, 2016

In this post we are going to construct a farmer friendly GSM pump motor controller circuit which could turn on and off the irrigation system remotely from anywhere in the world via SMS and return you with an acknowledgement message. The idea was requested by Mr. PG Ragavandir.

Intruder Position Indicator Security Circuit

Nov 17, 2016

The post explains an LED based intruder position indicator circuit which will indicate the position of the burglar throughout the secured corridor as the person tries to sneak past the area.The idea was requested by Mr. Michael.

SMS Based Laser Security Circuit using Arduino

In this post, we are going to construct a laser security circuit which can send SMS alert to owner of the property or anyone else and activate loud alarm to deter the crook, which can be interfaced via relay.

10 LED Tachometer Circuit

Nov 15, 2016

The post explains how an accurate 10 LED tachometer circuit can be built using ordinary parts like IC 555 and IC LM3915. The idea was requested by Mr. Munsif.

How Hysteresis Works in Opamp Circuits

Nov 13, 2016

The post discusses how hysteresis resistor in opamps works and helps to create a delayed switch ON and switch OFF across its output in response to the difference between its input pins.

Simple Arduino Digital Ohmmeter Circuit

Nov 8, 2016

In this post we are going to construct a simple digital ohmmeter circuit using Arduino and 16x2 LCD display. We will also be exploring the other possible circuit ideas using the same concept.

Material Storage Level Controller Circuit

Nov 7, 2016

The post discusses a simple material storage level controller circuit which can be used for automatically activating and deactivating a storage filling motor whenever the storage container is filled to its stipulated threshold level. The idea was requested by Mr Sladjan.

Battery Level Indicator Circuit using Arduino

 In this post, we are going to construct a battery level indicator using Arduino, where a series of 6 LEDs show the level of the battery. If you are interested in monitoring and maintenance of your 12V battery, this circuit might become handy.

1.5V Power Supply Circuit for Wall Clock

Nov 6, 2016

The post presents a simple transformerless 1.5V DC power supply circuit which can be used for powering wall clocks directly from mains, and also keep a stand by back-up cell fully charged for enabling an uninterrupted operation of the clock even during mains failures. The idea was requested by Cheekin

10KVA Solar-Grid Inverter Changeover Circuit with Low Battery Protection

Nov 5, 2016

In this post we learn how to build a 10kva solar grid inverter changeover circuit which also includes a low battery protection feature. The idea was requested by Mr. Chandan Parashar.

Battery Over Discharge Protection Circuit Using Arduino

Nov 4, 2016

In this post, we are going to construct a over discharge protection circuit for 12v battery using Arduino   which can protect 12V SLA battery against over discharge, and also protect the connected load from overvoltage in case of overcharged battery is connected.

Submersible Pumpset Timer Circuit

Nov 3, 2016

The post details a timer circuit for submersible borewell pumpset which alternately switches the pumpset ON/OFF at a predetermined rate in order to allow the ground water sufficient time to restore at regular intervals and to ensure a consistent water supply to the attached overhead tank. The idea was requested by Mr. Siva.

IC 4060 Timer Latching Problem [Solved]

Nov 2, 2016

The post talks about an IC 4060 timer circuit related problem in which the circuit simply stops working each time its stipulated delay period is lapsed, even after a complete power switch OFF and ON.

Shake Powered Flashlight Circuit

Nov 1, 2016

The post discusses a shake powered flashlight circuit using an simple copper coil and a magnet. The idea was requested by Mr. Dennis
 

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