One of the projects in Practical Arduino is the “Online Thermometer”, which combines an Ethernet shield with a number of DS18B20 1-wire temperature sensors to allow you to read multiple temperatures and make the values accessible using a web browser. In that project I chose a specific model of Ethernet shield that was available at […]
Online Thermometer using Arduino Continue Reading
General purpose Arduino shield for self-balancing machines. Why did I make it? I previously made an Instructable in 2010 on how to build a self-balancing skateboard. http://www.instructables.com/id/Easy-build-self-balancing-skateboardrobotsegway-/ There are >500 comments on this and many express confusion setting up the balance sensors, software and electronics. On top of that, the analog output inertial measurement units
Self-balancing skateboard/segw*y project Arduino Shield Continue Reading
The other day I was confronted with an interesting problem, I needed to control a series of lights from an interaction on a computer screen and it had to be as inexpensive as possible. I instantly thought of an Arduino. It had everything that I needed, more than enough I/O, an integrated USB and its only
How to control LED’s with Processing and Arduino Continue Reading
Waveform generators (also called function generators) are useful for testing and debugging circuits. They can be used to test the frequency response of electronic components like op amps and sensors or to characterize and troubleshoot audio effects boxes and pedals. This waveform generator shield is powered by an Arduino. It outputs four waveforms: sine, triangle,
Arduino Waveform Generator Shield Continue Reading
DAC is short for Digital to Analog Converter. In this article we play around the code Michael Smith created for a PWM based DAC. I modified his code so that other DAC options could be tried. I compare the 8-Bit PWM DAC with the R2R DAC at various numbers of bits. You might be surprised
Arduino Audio DAC Options Continue Reading
Time for another instalment in my irregular series of clock projects. (Or should that be “Time for another instalment in the series of irregular clock projects”?) In contrast with the extreme “blinkiness” of Clock One, in this article we describe how to build this single-digit digital clock: Once again the electronics of the clock will
Clock Two – Single digit clock using Arduino Continue Reading
Maker Alessandro Grossi sent us this great DIY build for a 3D scanner built using a laser, a DSLR, and an Arduino controller. Allesandro is a Mechanical Engineer, holding a Ph.D. in product design. His day job involves helping designers and manufacturing firms develop and optimize products by means of FEM analisys and Computational fluid
DIY 3D Laser Scanner Using Arduino Continue Reading
I’m not usually one to revisit a project after I’ve finished it, but I made an exception because the problems with the original design were making this device unpleasant to use. For those of you just now viewing this project, it is the second iteration of an iPod information screen I made for my girlfriend
IPod Information Screen Rev. 2 Continue Reading
This Arduino project will display RSS feed headlines on an LCD via an Arduino and a USB cable. It works quite well, and lets you keep up with the world news while you’re sitting at your desk. Many of the values in the code can be changed, and the system can be adapted to display
An Arduino RSS Feed Display Continue Reading
Our most popular item on our display at Maker Faires is always the Rainbow Jar. One customer has already replicated it so we thought we’d share how we made it so you can make your own! https://vine.co/v/hqxpVgdFQ9z (tried embedding this vine but it breaks instructables!) Step 1: Getting Started – What you need Tools Soldering Iron
Rainbow Jar – RGB Pixel Strip Controlled via Arduino Continue Reading
