Return of the floppies: The floppy drives are back with multiplied force. Floppy drives,hard disk and optical scanners make music. Cover of Imperial March by computer hardware orchestra. How does it work? The principle is simple. Every device with an electric motor is able to generate a sound.The sound generated by a motor depends on →
RGB LEDs are awesome – especially the new, fancy ones with the WS2812 RGB LED driver. These LEDs can be individually controlled to display red, green, and blue, but interfacing them with a microcontroller or computer. To test controlling WS2812 RGB LEDs I bought a cheap addressable LED strip. An addressable RGB LED strip is →
Yesterday I posted about DMX-512 dimmer. DMX-512 is a lighting industry standard way of controlling lighting equipment.DMX-512 allows for one controller (like a lighting desk or computer) to control many lights from many manufacturers. DMX-512 fundamentally provides 512 channels of 8-bit resolution (0-255) level control(which constitue a DMX ‘universe’) using serial RS-485 communications at 250 →
Last year BBC introduced Micro:bit development board Intended to allow children to get creative with technology. The Micro:bit is one of the cornerstones of the BBC’s “Make it Digital” campaign. With Micro:bit BBC tries to get a million preteens into embedded development world as Micro:bit will be given to every 11 or 12 year old child →
Toa Mata Lego Band Actually Rocks article tells that [Opificio Sonico] has been at the Lego-based robot music making business for a while now. He has released videos on YouTube that shows a definite evolution of his style and the Lego ‘bots technical range. Awesome! Toa Mata Band is known as the World’s first LEGO →
A solid state relay (SSR) is an industrial component used for interfacing low voltage control signals to high current mains voltage loads. The SSR may be designed to switch either AC or DC to the load. It serves the same function as an electromechanical relay, but has no moving parts. You can control SSRs easily →
http://www.geek.com/games/create-a-raspberry-pi-arcade-using-ikeas-cheapest-table-1654241/ Article that tells how to build your own arcade table with Raspberry Pi, display, buttons, joystick and Arduino. →
The idea for this posting started when I read New approaches to dominate in embedded development article. Then I found some ther related articles and here is the result: long article. Embedded devices, or embedded systems, are specialized computer systems that constitute components of larger electromechanical systems with which they interface. The advent of low-cost →
Processing is a flexible free software sketchbook and a language for learning how to code within the context of the visual arts. I have thought that I should test Processing some day because it looks interesting and easy to learn. I finally did sort of testing. Let’s start from basics and history. Processing is an →
Scratch is a very easy to use and learn language designed by the MIT Media Lab mainly intended to introduce programming to children aged 7-16. I can be fun to older people as well. Scratch is a visual programming language. It can be accessed as a free desktop and online multimedia authoring tool that can →