Gary Dion’s AVR based video overlay titler, source and schematics included.The WhereAVR is a small, lightweight, low-power, and low-cost APRS tracker with a full compliment of analog and digital I/O, as well as the ability to decode ax.25 packets. This allows for the reception of remote commands without the need for a “real” TNC. It is designed to hook directly to the speaker and microphone jacks of a handheld radio. One caveat, however, is that it currently doesn’t have a spiffy configuration utility. [via]
The WhereAVR - [Link]
ATmega8 Video Overlay is a very simple Video Overlay but it wokrs fine.This projectd esigned by garydion.
ATmega8 Video Overlay - [Link]
Video switcher allows monitoring up to 4 security video cameras. Interesting thing is that device uses intelligent method of motion detection. PIC grabs low resolution (8×8) video frames and then calculates numeric sums of screen regions to detect motion by detecting image changes.
Of course it may seem that PIC microcontrollers are too slow for taking frame or even single video line at once. So it reads one sample per video line while line skewing has no practical difference. This way it collects all 64 data points. The Source File only implements the 4 cameras. You can connect any number from 1 to 4 and the software will sort out the detection and switching. Motion on any video input switches the output immediately to that source. [via]
Video camera switcher with motion detection - [Link]
This is a portable battery powered Rogue-like video game- The dungeons of Doom. The game runs on Atmega32 microcontroller. So it can be plugged to any TV set with NTSC decoder. AVR to TV interfacing is done with well known video DAC made of 3 resistors and is tuned to 75Ω TV input resistance. The whole project including 9V battery fits in a box for Altoid mints. Project source code can be downloaded here. Game code is far not complete, like only one monster implemented, also player inventory has no different weapons and items. But I guess there is still some fun to se some action on TV screen. [via]
AVR based Rogue video game - [Link]
Mikes writes in -
Since Make is all about great hardware projects, I figured I’d let you know about a project that aims to develop a fully VGA compliant video card in true open source fashion. Kerneltrap now has an interview online about the motivations behind the project, when the card will be available and what it’s performance will be. With the first prototype already working after just a few months of development, it’s a matter of time before developers can get their hands on one of these. [via]
Low cost open source VGA compatible video card - [Link]
This video showing how to make a vacuum tube by hand. The page and captions are in french, but it’s pretty interesting to watch. A small spot welder, some fairly basic glass working tools and a vacuum generator are required, but the technology is definitely within reach for the dedicated hardware hacker. [via]
[Video] How to make a vacuum tube - [Link]
This 9 min. overview video demonstrating Surface Mount Soldering with inexpensive equipment. Includes soldering of a 603 resistor, PLCC, 44 pin QFP, 208 pin fine-pitch QFP, desoldering using hot air and ChipQuik®, and prototyping with SchmartBoards®
Surface Mount Soldering - [Link]