Squonk informs us of some interesting papers (PDFs) on noise suppression techniques and EMI suppression filters available from muRata. The same page also contains some information on the EMI regulations in different countries. Via the contact form.
YEARS from Bartholomäus Traubeck on Vimeo. Bartholomaus Traubeck presents his “Years” project. Years is a phonograph-like device which reads the characteristics of the rings in a thin cross-section slice of a tree and interprets these as piano notes depending on … Read more
In this lightning talk presentation from the 28C3 conference, the zunkworks crew outlines their work using simple RF hardware and a Linux laptop with soundcard to experiment with Radio Direction Finding (RDF). RDF has long been used in commercial and … Read more
Oscar has written an article describing a technique he’s used for reading multiple analog sensors with one MCU ADC pin. He was designing a line-following robot and wanted to read several infrared sensors without having to dedicate an analog read … Read more
Joe Desbonnet writes that he’s found a quick and cheap Bus Pirate to breadboard cable hack. “I needed to check out a I2C temperature/humidity sensor with the Bus Pirate on a breadboard. So I hacked this connector comprising a short … Read more
Computerized voting machine vulnerabilities are nothing new, but this video demonstrating a man-in-the-middle wireless attack on a Diebold voting machine takes a different tact than most others. A vulnerability assessment team at Argonne National Laboratories was able to compromise the … Read more
Flyback transformers are used to drive the large odd shaped coils surround the neck of CRTs in TVs and computer monitors. They operate in the 15 to 150 kHz range, and can be used to generate high voltages! Uzzors2k decided … Read more
Boris Landoni writes to call attention to his interesting article in Open Electronics describing how to find your location using GSM Cell ID data: The radio mobile network is made up of a number of adjacent radio cells, each of … Read more
The APCO25 (P25) communications protocol is a form of digital radio communications technology growing in popularity in police and other public safety radio systems in the US and abroad. Many such systems are unencrypted and can be received on digital … Read more
This video describes a prototype of a transcranial magnetic stimulation device designed by Ben Krasnow. He explains: Transcranial Magnetic Stimulation (TMS) is a technique to stimulate brain tissue directly through the skull. It works by sending a very high current … Read more
Researchers at the Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, have just started using a combined computer and laboratory bench. This will not only streamline their research, but also kickstart the transition to the paperless laboratory. The bench is essentially a … Read more
Joe Desbonnet writes: I stumbled across a product called “Chip Quik” for removing SMD chips from boards with nothing more than a soldering iron. I got the kit from Farnell and wrote this short review. Via the contact form.
Chris from PyroElectro has posted his plans for a 10-A H-Bridge motor controller that avoids using the the typical controller ICs. He writes: Motor control is the core heart of robotics. Without locomotion or any movement a robot is dull … Read more
Sivan Toledo likes to use Ham Radio Deluxe (HRD), a free program that serves as a user interface to radio transceivers. Modern transceivers can be controlled either from their front panel controls (if they have a front panel), or from … Read more
Randomgarfield from fromorbit posted the above video, depicting his use of a 555 timer as a small oscillator tο clock CPLDs whіƖе debugging a small state machine. I needed a variable slow speed clock to help me debug a design … Read more
Following up on their first list of tips, 43oh.com presents this second list of cheap breadboard prototyping tricks. SD card headers, LED diffusers and more. Thanks opcode! Via the contact form.
When Jack the Vendicator’s laptop display malfunctioned, he thought all was lost. He developed a rescue strategy using an Arduino as a USB bridge between the laptop and a desktop PC. He plugged the Arduino into the laptop, and connected … Read more
What could you do with an array of 15 FPGAs? Why not attack hashes! NSA@home is a fast FPGA-based SHA-1 and MD5 bruteforce cracker. It is capable of searching the full 8-character keyspace (from a 64-character set) in about a … Read more
Maker Stephen Hobley presents a novel way of protecting your AC powered project from blowing up: place a light bulb in series with the circuit! While not a substitute for a fuse, this can provide a secondary means of protection … Read more
Fragile connectors on the SparkFun Nokia knock-off LCD are a headache. They’re not rated for multiple insertions, but we can usually move them very carefully on a final prototype. A mating connector we soldered must have warped from the heat. … Read more
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