[bodiby] was first to send in this New Scientist article about converting a DVD drive into a lab scanner. I did some digging and came up with the details. Here’s the paper describing the process and results. Here’s a basic schematic and description of the mod. A set of samples is placed onto a CDR. A photo sensor is used to locate the samples on the CD, while the laser is fired through each sample. A planar photodiode is used to measure the attenuation of the laser as it’s transmitted through each sample. Sadly, I couldn’t find any details on the custom control electronics.
Author: Will O'Brien805 Articles
Serial Output For Your Weather Station
I spent part of my weekend with some sort of stomach virus, so Eliot stepped in for me yesterday. I’m taking next week off, so we’ll have a special guest starting Friday – but I’m not revealing who just yet.
[Fickara] sent in his AVR interface(in Italian) for an Oregon Scientific remote weather station. Thanks to the AVR, data is output via RS232. There are quite a few less expensive weather stations – usually PC output models are over $100, so this could be pretty handy. His page has several other projects including an oscope clock, POV on a stick, etc.
Timing Attack XBox 360 Kernel Downgrade
[Xantium] let me know about the latest from the XBox Scene. The attack that was just a proof of concept is now a fully released hack. [Robinsod] released details on how to perform the ‘Timing Attack’ in order to downgrade the 360s kernel to a hackable version. The hack requires an infectus mod chip, a PIC interface built around a 16F876A and a software package to get things rolling. The big deal is that you can now downgrade your 360 from any kernel to an exploitable version. Considering the previous limitations, this is pretty exciting news for the homebrew crowd.
Hybrid Robot
[Coley] sent in this port of jetpack for the propeller uc, but when I started poking around I discovered this sweet hybrid robot platform. A four stroke Robin/Subaru 35cc motor drives a car alternator, providing virtually unlimited (in the robot world) power on demand. Hit the video after the break for a quick R/C demo and an idea of how loud the engine is. Offhand, I recognize the lovejoy coupler that was used to connect the engine to the alternator.
By the way, this bot is featured in the latest Robot magazine, so you can get details there if you hate reading forums.
In Bag USB Cable
Ever had a USB cable sticking out of your laptop bag? I’ve done it many time while I’ve been traveling. James built a simple right angle USB cable so he could keep things tucked away and damage free. He epoxied a connector to some proto board, then soldered things back together.
Simple IPhone Headphone Mod
Apparently the iPhone jack isn’t quite standard – it’s a bit recessed to the point that third parties are offering adapters for it. [John] offers this simple method for modding Etymotic’s fine ER6i headphones. (If only I could find mine. I haven’t seen them for 8 months.) I suggest using a utility knife over a pocket knife. It’s simple, easy, and will probably work on most headphones.
Haptic RADAR: Electronic Whiskers
[thomph-zhu] sent in this interesting project. If you’ve ever wished for cat like senses, you’ll dig this. It’s a set of electronic whiskers – it uses IR to detect nearby objects, and vibrates against your head upon detection. It’s definitely an interesting use of tactile feedback. The initial idea is for construction safety, but this could be useful for plenty of other applications. (Robotic control, etc)
