My Commentary and Technical help

They are advertising this sign as "10 - LED 8x8 5mm Dot Matrix Array Module Common Anode Red & Green 60mm".  The sign has a tw...

Recently I had the fun of removing the hard drive from a Dell Inspiron Ultrabook 14Z.  The hard drive is located under the battery.  Where i...

Recently while working on a website, I noticed that some words were being underlined.  I did not make them links so I scrolled over the word...

I have been working on a new book called "Arduino LED Projects".  Now I am looking for a publisher.  It has a dozen projects from ...

I have not given up on the idea of using an Arduino to power a 120 by 32 LED sign.  In fact I have it working, but the Arduino is still not ...

Some people asked me for a simpler way to interface the Cadaces modules to an Arduino, so here it is! All you need to do this i...

I have become a fan of the Dell Inspiron 1501 and 1503 laptops. I first fixed up one for a friend. Then someone gave me one for free. I c...

I have written some code to work with the small 8 by 10 LED array boards made by Cadaces/Signature Electronic signs.  Here is a picture of o...

A while back I rebuilt a Dunlap-Clark amplifier using some TDA7294 modules.  I was disappointed with the anemic results of about 150 watts p...

I have obtained several dual color Cadaces modules. I will be selling them on eBay soon. Here is a sign in red: Here it is again this ti...

*** BREAKING NEWS!!! ***  The next batch of Cadaces modules are RED and GREEN in color.  This will require an updated adapter and updated so...

0n November 1 of 2012 I went to work as usual.   There was a strange announcement made for me to come to the main office area.   I hesi...

Several people have asked for more information on the Arduino to Cadaces/Signature Electronics Sign interface. So I am posting a third time...

My brother sent me a dead Acer Aspire 5560 laptop.  I checked the power adapter and it had 19 volts.  I tried another adapter just in case, ...

I have removed three of the Cadaces modules and have written some new code to make them work.  Next is to hard wire the interface circuitry ...