Simple EMF Detector/Meter

T.K. Hareendran - 02/09/17

I recently built a simple electromagnetic field (EMF) detector based on a code by Christian Figge that I [...]
schematic basic

Sine Wave Generator Circuit

T.K. Hareendran - 11/30/16

According to textbooks, a sine wave is a wave whose form resembles a sine curve. Often in power [...]
8. lm35_setup

Arduino Datalogger with Memory Card

T.K. Hareendran - 10/04/16

How do you save data from an Arduino-based device to a memory card? Fortunately, a microSD card and [...]

Arduino Visual Basic Integration

T.K. Hareendran - 09/22/16

Usually, I use the Serial Monitor of the Arduino IDE to communicate with the Arduino hardware. But now, [...]
555 radio beacon

Build Your Own Radio Beacons

T.K. Hareendran - 05/30/16

A radio beacon is a wireless device that marks a fixed location and allows direction-finding equipment to locate [...]
Camera Remote Control

Layman’s Camera Remote Control

T.K. Hareendran - 05/06/16

It’s sensible to use a remote control when your camera is mounted on a tripod, especially when you [...]
I2C LCD Backpack Primer

Arduino I2C LCD Backpack Introductory Tutorial

T.K. Hareendran - 12/01/15

Assume that you are moving towards a complex microcontroller project bundled with blinkers, beepers, and a display panel. [...]
arduino with keypad

Arduino with Keypad Tutorial

T.K. Hareendran - 11/25/15

A keypad is one of the most commonly used input devices in microprocessor applications. In a standard keypad [...]
Arduino Digital Power Switch

Arduino Digital Power Switch

T.K. Hareendran - 11/20/15

Arduino Digital Power Switch is a “silent” digital electric switch circuit built around the exemplary µC Arduino (UNO) [...]
connection diagram of the linear active thermistor

Arduino Linear Thermistor Experiment

T.K. Hareendran - 11/16/15

Thermistor is a semiconductor device made of materials whose resistance varies as a function of temperature. A thermistor [...]
Arduino Stepper Motor Driver

Arduino Stepper Motor Driver

T.K. Hareendran - 10/19/15

In this tutorial I will explain how to drive a stepper motor using Arduino microcontroller. For this project, [...]
assembled pan tilt bracket

Arduino Pan & Tilt Bracket

T.K. Hareendran - 10/13/15

Inspired by the Pan/Tilt bracket from SparkFun (, recently I built my first prototype of an Arduino-based Pan/Tilt [...]
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