About Display/Screen

This page contains an archive of all entries posted to Gadget Freak in the Display/Screen category. They are listed from oldest to newest.

Delay circuits is the previous category.

FPGA is the next category.

Many more can be found on the main index page or by looking through the archives.

Sign up for the fortnightly Circuits eNewsletter. Get design ideas and circuit schematics straight to your email inbox, no fuss. Just tick the option for Circuits.

RSS Subscribe to this blog's feed
[What is this?]

Archives

Main

Display/Screen Archives

July 12, 2007

Build your own Interactive Multitouch Display

Now, we would hate for you to think that we are easily impressed.

But we are.

If you haven't got the £5,000 to buy your very own Microsoft Surface, just follow the lead of 'Turkey Tek' and build your own.

Continue reading "Build your own Interactive Multitouch Display" »

September 17, 2007

Build your own printer cable LCD display

Here are the full build instructions to help build your very own LCD display for your printer cable.

LCD%20display.JPG

Continue reading "Build your own printer cable LCD display" »

October 3, 2007

Digital displays the Best Damn Thing

Digital displays incorporating a new way of delivering video called ITrans have been used by Virgin Megastores in London and Glasgow to boost sales of Avril Lavigne’s latest CD “The Best Damn Thing”.

avril.JPG

Continue reading "Digital displays the Best Damn Thing" »

July 7, 2008

Charlieplexing - Cylon-eyes and Holoclocks

charlieplexing 2.jpg
Charlieplexing. The verb is an electronics technique apparently named after one Charlie Allen, an engineer at Maxim.

It involves minimising the use of I/O pins on a microcontroller to drive a maximum number of LEDs, for example using the same pin to alternate between driving digits (cathodes) and segments (anodes).

You can read an entry on Charlieplexing in Wikipedia. I quote:

"Much like standard multiplexed displays, all the cathodes of any particular digit are connected together to a single I/O pin which remains low. Much like standard multiplexed displays, each anode of each LED of a particular digit is tied to the current-limiting resistor of a different I/O pin.

Continue reading "Charlieplexing - Cylon-eyes and Holoclocks" »