Most of todays AVR programmers don’t support the high voltage mode the only widely available possibility beeing the STK500 from ATMEL. HVProg is a redesign of the original STK500 without all components of a development board. It is based on the original ATMEL schematics that are freely available on the net (i.e at avrfreaks.net). The main target was to keep all nessecary functionality to programm all available AVR controllers in every programming mode that the STK500 supports.
I never need-ed high voltage programming so far, so the fact that my AVR MK II doesn’t support high voltage programming doesn’t bother me, because i don’t need it.
HVProg Parallel and serial High Voltage Programmer:[Link]
The Sprinkler controller was designed to act as a interface and controller for managing sprinkler system valves (also called zones). Those that exist either use what I consider to be unreliable protocols (X10), have a very limited number of valves (like 6 or 8), aren’t opto-isolated (i.e. just relays, pratically guaranteed to send huge transients into your automation system) or are just expensive (like $250 for 8 zones).
Currently i don’t have a lawn so I’m not too interested in this kind of projects, but i thought you might be.
27 Zone Sprinkler Controller With Pump Control:[Link]
I say another, because we all know the DIY MP3 Player and the AVR Butterfly MP3 Player. This mp3 player can support up to 4 GB of storage (MMC or SD cards) runs from a single AAA battery and has full user control (volume, track, pause, skip, directory) with a 5-way micro joystick.
Also the LCD has contrast control, you can record voice and the firm-wire is totally upgradeable trough RS232. In fact this DIY MP3 player is the coolest I’ve seen so far and it’s full of tricks.
Another useful application for a LED dot matrix display, well useful for those who use twitter. The purpose of the project is simple, it scrolls your twitters on the led matrix, this way you don’t have to be in front of your computer to see what’s new. Source codes and info about building it is provided by the author. The matrix is controlled by an Arduino
The purpose of this project is to show, how you can build a surveillance system with web-page interface. The webcam can be moved vertical or horizontal through the interface, but only in the area that border sensors will allow. The control page is secured with login system, where the user types in an user-name and a password.
On the control page the user can control how the webcam will turn and how many steps it will run. The user can also turn the webcam on and off via web interface. Information about the states will immediately update on the screen. User can also turn the motion detector online, if the camera detects motion, it will automatically save the frames. Naming of the pictures is done with “timestamps”, so it is possible to find out when the picture was taken.
The part that interests me on this project is the servo, because a few years ago i was thinking to something like this, but i never build it. Now it’s nice to see, someone actually build it. Webcam With Servo And Web Interface:[Link] - [via]
