Lego Head Tracking

April 3, 2009 by Caleb Kraft 11 Comments

lego_tracking

[Epoch] Sent in this simple head tracking project using Lego pieces. He’s made a custom mount to hold 3 Lego light sensors on a baseball cap. Then, after modifying his webcam for IR with some floppy disk scraps, he loads up the free-track software and can control his games. For convenience, he has programmed the Lego Nxt to only turn on the lights while he’s holding a contact sensor. You can see it in action after the break. This appears to be very similar to [Johnny Lee’s] head tracking. Judging by the video, it’s not as smooth though.

Continue reading “Lego Head Tracking” →

RF Modem + 250mW Amplifier

April 2, 2009 by Caleb Kraft 37 Comments

[Trax] sent in his writeup on this RF modem with built in 250mW amplifier. The original power of the RF transceiver was around 10mW, his final results after testing were nearly 250mW. He was able to to easily transmit data over 1000 meters using his test setup. He states that he was actually able to achieve this without an antenna on the receiving side. That’s pretty impressive performance. It’s also worth noting that he soldered all of the components in place using a home clothing iron and some soldering paste. That must have been fairly tedious.

How-to: Fix Your Stupid Internet

April 1, 2009 by Eliot 26 Comments

aprilfools-1

Dear Hack a Day,
Websites keep publishing poorly executed jokes today; how can I fix this?

We’ve been getting a lot of questions on the tip line like the one above, so we put together this one-step illustrated how-to. If you’re not the physical labor type, you can use [Steve Lambert]’s SelfControl.

The Dream Tablet

March 31, 2009 by Caleb Kraft 12 Comments

dreamtablet

[Matthew] has completed this Dreamcast tablet modification. That’s right, you’re looking at a Dreamcast laid out in tablet format. We’re not really sure what advantages the tablet layout has, since it’s not touch screen and you probably need to put it down to play anyway. The laptop or clam shell might have been a smart choice simply for screen protection. Putting that aside, this is really cool. He had to do some extensive re working of the motherboard in the Dreamcast to get it to fit. Interestingly, he hacked together a custom disk drive for it too. You can see detailed pictures of the entire process, including the construction of the case, on his site. Great job [Matthew].

[Thanks John, via Fusion Mods]

PSP As A Status Monitor

March 30, 2009 by Caleb Kraft 23 Comments

[Avi] sent in his PSP as a status monitor hack(zip). He’s using Lua on the PSP, so you have to install LuaPlayer. The computer side is written in python, so it should be cross platform. Last time we saw a psp as an extra monitor, it had more capabilities, but it was limited to Windows. You’ll find the Lua script as well as the python in the zip file. It’s a nice use for an extra psp.

Vexduino

March 29, 2009 by Caleb Kraft 6 Comments

vexduino1

[Jeremy] picked up a Vexplorer pretty cheap, and wanted to make it better. He decided that Arduino controls would probably be a nice upgrade. He patched into the controller and installed a nice looking plug to interface with the Arduino. He says the software was custom made as he couldn’t find suitable examples on the net. His software is available for download. We covered a picaxe controlled one in January, but it looks like that site is currently down.

The Narcisystem

March 28, 2009 by Caleb Kraft 18 Comments

biometric

The Narcisystem is part of an art display where [Eric] strapped himself to as many biometric sensors as he could. The core of the system was a Funnel IO which includes an Arduino, Xbee plug, and LiPo charging circuit. It was collecting data from a heart rate monitor, an EEG, a breathalyzer, compass, and an accelerometer. This data was sent to a laptop and then sent to different displays. You can see the setup functioning in a video after the break. The red flashes are his heart beat, the blue light is the direction he’s facing. What you can’t see is the high power bass thud every time he takes a step. The EEG data was supposed to effect the tempo of the music, but it failed and was dropped, as was the fog machine based on his blood alcohol level. He notes that he wanted to do more, but was lacking the hardware.

Continue reading “The Narcisystem” →