In the previous article, I have study the way to power this large VFD, now we gonna take a look closer at the logic itself. We need to drive a lot of bits (8+9) at ~40v. After a little googling, I discover that Allegro still sell some VFD drivers, but they are really hard to [...]
admin October 9th, 2006
Hello HackADay / MakeBlog / HackedGadget users, be sure to read the second post,
as most pictures are here.
/ Enjoy
After my nixie clock, I decided to build a new one based on a old VFD vacuum tube. In fact, the brother of a friend (which live in Ukrainia) give me a bag of tubes. Beside I [...]
admin October 9th, 2006
Sometimes you need a simple negative power supply. The best example is the contrast PSU for common small LCD device. Building -5V from a battery or a wallmart supply isn’t really easy. I decided to build a small device that is able to provide -5V, -12V, -15V. I used the MAX 764/765/766 serie. Simply change [...]
admin June 10th, 2006
I already done a AMOS Antenna before but I need to build another one. A bit more robust. I decided to use a N connector, a bit of plumbing.. and here is the result:
This stuff, is quite robust right now ;) .. and still have a great gain.
Please note that there is some new AMOS [...]
admin June 5th, 2006
Hi all, I haven’t post here since a while right now. In fact, I spend quite all my time w/ playing with some electronics stuff.
Some people asked what I’m doing .. that it .. here a teaser
This is some New Old Stock Russian VFD vaccum tubes.. ready for my next RSS reader !
I’m looking for [...]
admin May 20th, 2006
Ok, I’ve been off for a while right now. In fact, I’m playing with electronic’s stuff a lot. I just decided to build a nixie clock (for the fun).
For those wondering what is a nixie. Take a look at Wikipedia
And a nixie clock look like this:
There is a couple of hard stuffs to fix for [...]
admin November 8th, 2005
I spend a little time to write an article on the Brest Wireless website about various hack to add a connector to a PCMCIA, or USB card.
You can find it out here
a PCMCIA:
a USB one:
– Enjoy :)
admin July 22nd, 2005
This is perhaps one of my best homemade antenna.
I found the original design here: http://yu1aw.ba-karlsruhe.de/Amos.pdf
You can find my construction guide on Brest Wireless website at
http://www.brest-wireless.net/wiki/materiel:amos
My conclusion:
First:
Take care of this antenna, I broke the first balun while testing :(
and the balun is the hardest part to do
Tests :
13db of gain
and a really big beam 120° !
the [...]
admin July 7th, 2005
After the omnidirectionnal antennas, and the can-antenna, here comes the new one:
This is a biQuad, and a double-biQuad antenna. You can find the construction guide (in Fr) here.
As usuall the photos is in the Brest-Wireless gallery
The small one is about 11/12db .. and the biggest one: ~ 14db !!
Update: Fix links
admin April 19th, 2005
I decide to launch a new wireless antenna collection. Here is my new homemade one.
You can discover all photos here, and the construction guide
admin April 5th, 2005