Author: WK

Ultrasonic Rangefinder

Today, I’ll be showing you how a ultrasonic sensor can be used to determine the distance of an object from the sensor, which will be displayed on a LCD display. In this tutorial, I’ll be using a Parallax ultrasonic sensor & a parallax...

Hand Tracking using Infrared Compound Eye

In this project, I decided to explore using IR sensors to perform a simple motion tracking of a hand instead of using a camera as to simplify the tracking.  The location of the hand will then be represented by a circle &...

LED switcher using a DPDT Relay and a potentiometer

In this project, 2 LEDs will be switched on and off using the DPDT relay. (or flip-flopping the LEDs) This is another simple project to further explore the features of Arduino.


Ever wanted to send out a SMS after a period of time? Or do you ever wanted to time when to send out your SMS? Well, let me introduce the SMScheduler! This is an android application project done by myself. This android...

Arrays with a 7-segment LED display

This is another project using Arduino Uno. In this project, I used a 7-segment LED display to loop the digits 0-9 using array though there are still some bugs in the program.

Random sound generator

In this project, I used a piezo speaker to randomly play certain notes which i arrayed form 0 – 9.

Light intensity indicator with 7-segment LED display

This is similar to the other light intensity indicator tutorial. In this tutorial, the 7-segment LED display will be used to display the intensity of the light received by the photo resistor, mapping the light intensity values from 1 to 9.

LED Light intensity indicator

This is a simple light intensity indicator using a photo-resistor and 3 LEDs. It indicates the amount of light available around the photo-resistor with a range of 3 LEDs. Arduino UNO board will be used in this tutorial.

Simple LED light chaser

In this tutorial, you will learn how to make a simple light chaser, which will consist of only 3 LEDs. What does a lightchaser do? A light chaser can be used to create lighting animation sequences to attract attention.

Tempo Knob

This is my first Arduino project. In this project, the tempo (speed) of the rhythm produced changes when the resistance of the potentiometer changes. In this context, the resistance of the potentiometer will change as I rotate the knob the potentiometer....