DIY Solar Chimney & HVAC
FrankG writes with his DIY HVAC for small greenhouse (part 2) assembled from scavanged parts – Link. Previous: Solar chimney project – Link.
Technology
HOW TO – Salvage 9V battery clips from dead batteries
Westfw writes – “You can use the top of an old 9V battery as a 9V battery clip for assorted electronics projects. Here’s how to make a nice wire-lead version…” – Link.
Breath of Fire – alcohol breathalyzer and a flame thrower
A MAKE reader sent this in, lots of alcohol breathalyzer projects seem to be in the works lately, here’s how to make an alcohol breathalyzer and a flame thrower – “The Breath of Fire is the marriage of an alcohol breathalyzer and a flame thrower. A Basic Stamp takes a reading from a alcohol sensor […]
HOW TO – Design, build, and configure a (low-cost!) backup/server monster
Sam writes – “I recently built a Linux-based backup server and I documented the process. We built a full-fledged server, installed Fedora Core 4 (not 5! waaaay to bleeding-edge), setup the server to serve the 4 backup hard drives (broken-up into 2 RAIDO arrays) through FTP (the protocol our software uses), and as a bonus […]
Homemade high quality Minidisc recording interface
Leorick writes – “So you want to get a high quality audio from a minidisc recording but when using red and white RCA, the quality drops drastically. Here is my cheap solution for you.” – Link.
MIDAS: Homemade Dorm Room Home Automation System
Barbara writes: “A couple of freshman roomates at MIT set up a full-fledged dorm room automation system, complete with voice activation, web control, touch screen controllers, a security system, fingerprint scanner, automatic blinds, screens with news feeds, etc, all actuated by a central “MIDAS” controller which they built and wrote the code for. Pretty cool […]
A silent water cooled PC made with parts from Home Depot
Jake writes – “When the GPU fan on my PC’s video card started to rattle I decided to make the quietest PC I could manage. The CPU and power supply are cooled by the thermosiphoning of water and the convective flow of air alone, no fan, no pump. And most of the parts came from […]
