Home Blog  





18 Mar 2011

Randomgarfield from fromorbit posted the above video, depicting his use of a 555 timer as a small oscillator tο clock CPLDs whіƖе debugging a small state machine. [via]

I needed a variable slow speed clock to help me debug a design I’m creating with a bunch of CPLDs. Given the current focus on the venerable 555 timer IC, I thought rather than using my usual AVR/PIC solution I’d create something with the handy little timer.

555 based FPGA/CPLD debugging oscillator - [Link]

18 Mar 2011

adafruit.com writes:

In honor of the new chronodot, we’ve put the brains behind the chip (The maxim DS3231) into our partfinder! This is a high precision ‘big brother’ to the DS1307. It has a built in temperature compensated oscillator so that its very precise. They are a bit chunky but good when you want to really keep track of time and cant integrate a GPS module.

DS3231 – High precision real time clock with built in oscillator – [Link]

18 Mar 2011

Controlling Arduino with PHP in Ubuntu. Bushveldlab writes: [via]

I’d like to share a fun little example I’ve been fiddling around with over the weekend while attempting to get to grips with PHP. A few weeks ago, I decided to take the plunge and dedicate some quality time learning the basics of Ubuntu and dynamic web programming using Apache, mySQL and PHP. To keep things interesting, I’ve been looking for good practical examples to play with. The first mini-project was to get PHP talking to Arduino so that I could use a basic web page to toggle Arduino’s on-board LED on pin 13 on and off.

Controlling Arduino with PHP in Ubuntu – [Link]

18 Mar 2011

Ever wondered about how a Voltaic solar panel is constructed? Here’s a short video showing the the composition of the panel and why its so strong. [via]

Construction of Voltaic Solar Panels – [Link]


18 Mar 2011

Arduino and NanoNote… [via]

David Reyes, aka Tuxbrain, one of the Arduino distributors in Spain, has just brought to life one of the coolest hacks I have seen for some time. He managed to reflash Arduino Uno from a Ben NanoNote. He has implemented a text-based IDE that can reflash the boards directly from the NanoNote without using external power. If you want to have a device to reprogram your ATmega processors without having to bring your computer around, this can be a great solution. Just remember, this is an advanced hack, you should be familiar to the use of CLI (Command Line Interface), but David has promised taking a look at Qt-creator and put together a small text editor with uploading capabilities. Stay tuned at Tuxbrain’s development website!

Arduino and NanoNote – [Link]

18 Mar 2011

Howto: Build a Cigar Box MIDI Controller for Max/MSP… [via]

The previous howto described the process of making a jumbo-sized MIDI controller. In this howto, the MIDI CPU is used to make a more compact device: a cigar box MIDI controller that can control Max/MSP (and any other MIDI software or hardware).

Howto: Build a Cigar Box MIDI Controller for Max/MSP – [Link]

18 Mar 2011

Stencil Printer universal tooling Design (open hardware), Marc writes: [via]

this was my design of stencil printer tooling it almost universal and work for single / both side Printing whit keep fix PCB height. hope it will usefully for some one this was also a approved by cat product …

Stencil Printer universal tooling Design - [Link]

18 Mar 2011

Winfred, who is a Windows Systems Administrator, shows us a project for adding sound to a motorcycle using the Adafruit Wave Shield.

On a beautiful day I was thinking, wouldn’t it be cool if other devices also had start-up and shutdown tunes, just like your computer? For example, your TV, your car or your motorcycle? Since I was looking for a simple project to that uses an Arduino microcontroller, I decided to add the Windows XP Startup and Shutdown sounds to my BMW F650.

BMW XP Sounds – [Link]

18 Mar 2011

Bill takes apart an LCD monitor and shows how it works. He explains how it uses liquid crystals, thin film transistors and polarizers to display information [via]

Engineer Guy vs The LCD Monitor – [Link]

18 Mar 2011

pyroelectro.com writes:

The Tricopter is an awesome little multi-blade helicopter. It uses an ATmega for the control loop from the sensor feedback and has a camera mounted on its front so you can see where it’s going. Take a look at the action videos, a pretty impressive little project.

ATmega Tricopter (V2) – [Link]



 
 
 

 

 

 

Search Site | Advertising | Contact Us
Elektrotekno.com | Free Schematics Search Engine | Electronic Kits