Charlieplexing is an ingenius method for controlling many LEDs without using many microcontroller pins. You can turn on or off one LED at a time. To light more than one LED at a time, you can scan the LEDs by turning a sequence of them on and off really fast. The number of LEDs you […]
Continue Reading
The project uses the DHT22 sensor to monitor temperature and relative humidity in an aquaponics system. The data is uploaded to a bare-bones application on Google App Engine and visualized with Google Chart Tools.
Continue Reading
I am going to teach you how to properly set up an Arduino for this configuration and explain some basic programming. I am also going to explain to people how to build the system in a few simple steps.
Continue Reading
Make a mouse for your computer that uses only an Arduino, an accelerometer, and your head movement to move and click.
Continue Reading
This is a very simple box design using a small box (a shoe box or smaller works) with a simple lock mechanism to represent the opening of the box. When you get the code right, a green LED lights up and the servo moves, unlocking the box (or at least making it easier to open). […]
Continue Reading
In this guide you will learn to created an array of LEDs that visually represent the volume picked up by an electret microphone. You will learn how to wire 3 different circuits which are the LED array (which is really many individual circuits), the microphone, and a button which can be used to change the display mode […]
Continue Reading
This tutorial will give you step-by-step instructions to make your own musical glove that will produce a different note for each finger pushed.
Continue Reading
