Vienna High Altitude Balloon

I’ve been quiet for some time again becaus I became a member of the vieHAB Project. It was started about 4 years ago by Erwin (OE1FEA) but remained dorment for the most of this time. We met at the monthly Metafunk amateur radio meeting where I attended a course to get my ham radio license.
Basically I wanted to do such a project for a long time but never got around doing it. So I jumped the opportunity and became hardware guy. The whole project will be published as OSHW. For our first start vieHAB-1 we will use ready to use modules like an arduino and ublox gps on breakout boards with a backplane.
It is planned to have 2 cams, 2 temperature and preassure sensors, 2m and 70cm radio, GPS and SD-card on board for the first start. I will keep you posted on progress every now and then.

AE EP#47 Raspberry First Steps

Sooo, I finallly got around setting up my raspberry, nothing too special but maybe it helps some people.

The thing with the screen was rather easily resolved (if only I could have been able to see something :).

It involves pretty much tinkering and the trapezoid picture of the tube didn’t help.
In the end I added to the /boot/config.txt file to this:

overscan_left=18
overscan_left=10
overscan_left=-1
overscan_left=-25

The framebuffer_width/height are set back to normal.

AE EP#20 Industrial Controller Teardown & Homebrew Scope Ideas

Hi, I just started a dream project: Building an oscilloscope from scratch. Originally I wanted to use a russian 13LO37I but it turend out to be too bulky so I went and scored a waaay smaller 3KP1 / DG 7-113 from ebay.
I’ll put up a high res Photo of the tubes weiring system at my website.

One of the first portable TV-sets: http://www.radiomuseum.org/r/pilot_candid_tv_tv37.html

The DG 7-113 / 3KP1’s wiring system:

The russians 13LO37I / 13ЛО4И:

I found the first plans at Jogis Röhrenbude: http://www.jogis-roehrenbude.de/Bastelschule/Miniszill/Miniszill.htm