7 Segment LED displays are used in many applications as front panel number indicators. The most common applications are calculators, microwave ovens, electronic lab equipment like function generators and frequency counters. A 7 segment LED display consists of 7 LEDs arranged in such a way that it can display numbers from 0 to 9. The […]
Seven segment LED displays are brighter, more attractive, and provide a far viewing distance as well as a wider viewing angle compared to LCD displays. This project describes a serial seven segment LED display shield for Arduino Uno or compatible boards. The shield consists of eight 0.56″ seven segment displays that are driven by one
Introduction This article describes simple constant current driver module with fast PWM input that can be used for driving medium and high power LEDs. The module uses an integrated constant-current output, DC-DC buck converter with output current configurable from 0.1 to 0.5A. This article outlines the schematic, design guidelines, operation, and performance of the low
A low-cost 0.5A 33V LED driver module with 90+% efficiency Continue Reading
Here is a simple project using an Arduino and some LEDs. What we are going to learn here today is how to make a POV display or Persistence-Of-Vision display. It is made out of just 6$ worth of components. This tutorial gives will teach you how to make a simple and a cheap Arduino POV
How to Make a POV Display Using LEDs and Arduino Continue Reading
A simple project to display cool 8bit art and animation on your backpack! This is a quick and easy project you could finish off in minutes and show off to your friends. What it does is, when you move your backpack, a dot matrix display turns on and shows any character you have programmed in it.
How to Make a 8bit Dot Matrix Display Using Arduino Continue Reading
Ever thought of controlling any of your electronic devices with your smart phone? How about a robot or any other device? Wouldn’t it be cool to control them with your smartphone? Here is a simple tutorial for interfacing an Android Smartphone with Arduino via Bluetooth! Required Materials Hardware Bluetooth Module HC 05/06 Arduino & Battery (with
Bluetooth Basics: How to Control an LED Using a SmartPhone and Arduino Continue Reading
When I was a kid we went to the drive-in theater to see movies like The Legend of Boggy Creek and Evel Knievel. I loved those movies but I remember just as vividly those retro-cool metal speakers that entered into our car for these campy films. A few years ago I found one of these
Revive Old Drive-In Speakers with a Modern LED Twist Continue Reading
Designing a custom plate for the Arduino Robot, adding jumbo LEDs and displaying readings from an ultrasonic distance sensor to the LCD. My previous post on the Arduino Robot described how I took the Runaway Robot sketch and modified it work with the PING ultrasonic distance sensor. This post is still based around the same
This LED DIMMER is an Arduino Uno based PWM (Pulse Width Modulation) circuit developed to get variable voltage over constant voltage. The method of PWM is explained below. Before we get start building a 1 Watt LED Dimmer circuit, first consider a simple circuit as shown in figure below. Now if the switch in the figure is closed continuously over
In this project we are going to design an 8×8 LED matrix display, for that we are going to interface an 8×8 LED matrix module with Arduino Uno. An 8×8 LED matrix contains 64 LEDs (Light Emitting Diodes) which are arranged in the form of a matrix, hence the name LED matrix. These matrixes can be made by
