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Grabber30m GrabberGrid: EL09rk Latest 1 hour grabUpdated approximately every 10 min. (Click to enlarge.) 30m Grabber archiveBluetooth Morse Code Keyboard
This project is intended to help provide better computer access for people who can't easily use common keyboards and mice. Similar commercial products use serial, USB and PS/2 ports and cost up to $450 or more, which seems like a rip off to me for such a simple device. By using Bluetooth allows this device to be paired with more than just a desktop computer. Devices like laptops, smartphones and tablets that support bluetooth HID profiles can also be used.
Soundcard Radio Direction Finding (RDF)Updated: 2010.07.13 For theory of operation See: Doppler RDF projects: LED Propeller POV sign repairI have a POV toy/sign I got from thinkgeek.com, I don't think they sell them any more... Anyway, I accidentally broke mine, and decided to fix it by making a new "propeller." I did the layout design in a CAD program running on Linux program called qCAD. I etched the board fairly easily using the Pulsar Profx "Contact Etch" method. Programable LED Signs / Name BadgesOverviewI wanted to implement an auxiliary external display on Linux. I looked at a few displays and found three that had reasonable prices. Unfortunately none of them came with open source software, they did however come with some working but pretty poor windows software. So to use these devices from Linux or any other OS in a specialized way, I would have to reverse engineer the signs to a certain extent. This page is basically a summary on how I reverse engineered the communication protocols for the three signs. Note:Tower ModelMiniature Antenna Tower Model with 4 Element Yagi-Uda and blinking lights. Parts used: Softrock SDR Buildunder construction ---Package Contents--- 
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