DIY Eco-Tech Contest: Win a Solar Backpack and MAKE!
From DIY Solar Scooters to Solar Powered WiFi Hotspots to Hand-Powered iPods, Treehugger has always been fond of DIY eco-tech. Now we are looking for your eco-tech inventions. If you have hacked, modified, or created something that helps current technology conserve energy, we want to know. Send a picture of your creation and a quick description of what it is to: contest [at] treehugger [dot] com. We will pick the best submissions and let the readers vote for the most deserving one. The winning submission will receive a new $230 Voltaic Systems backpack!!! In addition, our friends at Make Magazine will throw in a 2 year subscription and a limited edition MAKE T-shirt! You have until September 15th, 2005 to submit your entry. Link.
Nice HOW TO on G4’s Attack of the Show by David Randolph – Here’s How We Built the World’s Only “Duck Hunt” Sniper Rifle. Everyone thought I was done with the original NES. What could I possibly do after making the world’s largest and smallest controllers? Well, here it is: the world’s only Duck Hunt sniper rifle. 
As the title says, advanced spud guns. The site includes plans for spud guns from an experienced builder. The highlight of the site, which the link points to, is a huge spud gun based on the revolver design (i.e. old west 6 shooter, magnum, etc), and plans are included. 
Remember, you can’t use this if you go 2.0! Stella PSP v0.1- This is a port of the Stella Atari 2600 emulator to the PSP. Original code by Bradford W. Mott, Stephen Anthony and Jeff Miller and many others. This PSP port was made by Alysa Habraken (aka Aenea). It’s not very optimized and not all games run or at full speed. Some have a little flickering, but this will be resolved in upcoming versions. Roms must have a .a26 extension and also they go in the ms0:/Stella/Roms. [
Cute project – Recently many kind of robot contests have being opened and some interesting reports of the challenge are found on the web. The Line Following is a kind of the robot contests to vie running speed on the line. I build a tiny line following robot which can run on the desk, moving the key board aside will do. It is for only a personal toy reduced its size less than one fifth compared to typical line following robots, not in formura. 
Nice hack for duping slides- I started this because I have about 2000 35mm slides and nearly that many color negatives I’d like to convert to digital images, and many of them are 30 years old or more and starting to deteriorate. My first attempt involved purchasing a slide scanner from the-store-that-must-not-be-named, but it took like 3 to 4 minutes to prescan and then scan to file, and then it usually botched the exposure or the color balance. I realized that I didn’t want to spend the rest of my life scanning slides in this manner, so I started thinking about other solutions…[