We previously covered Alessandro Grossi’s DIY 3d scanner. Now this project is becoming a start-up known as the DIMBODY. He describes, “DIMBODY is a 3d scanner, a digitalizer that allows you to take a physical object, and turn it into a digital 3D model on your computer. DIMBODY is based of triangulation between laser plane […]
Author Archives: the machinegeek
Overclocking Arduino UNO with liquid Nitrogen
Michail likes to experiment with overclocking processors using liquid Nitrogen. He also like experimenting with MCU dev boards like the Arduino, which led to the question how far can you go overclocking this little Atmel chip? Why, you might ask. “Because I can. To learn how electronics behave at cryogenic temperatures. And just curios how […]
One dollar variable fan controller
Mountaindude has been spending some time lately working on 12V fan controllers and thought he’d share his experiences so far. “While trying out various computer and network gear, I quite often find the fans too loud. They are of course there for a good reason, but experience tells that the device usually works just fine […]
DSD block for GNU Radio
Luke Berndt from the HackRF-dev forums has posted his work to make the functionality of DSD available to GNU Radio users in the form of a GRC block. “I have been playing around a bit and found an easy way to receive and playback digital LMR. More and more of the radio systems are going […]
Review: ADSP-BF592 EZ Lite Kit
Sebastian writes, “Here’s my review of the ADSP-BF592 EZ Lite Kit. Quite an interesting board for people trying to get into DSPs.” Via the contact form.
Advice: what to expect when authorities confiscate your electronics
It’s unfortunate that we have to consider these matters, but with governments worldwide obsessed with violating the privacy of ordinary citizens we found a well documented post which puts some flesh on what some naively view as skeletal paranoia. In this comprehensive article Violet Blue of ZDNet outlines the tools and techniques government agents worldwide […]
Ambient Backscatter: Wireless Communication Out of Thin Air
Trev writes to inform us of a wireless communication device without a dedicated power source has emerged from the Networks and Wireless lab of the University of Washington. According to the developers, “We present the design of a communication system that enables two devices to communicate using ambient RF as the only source of power. […]
MC HCK hacker’s DIY $5 MCU board
The MC HCK is an entirely open source dev board based on the Freescale MK20DX32VLF5 which supports USB for easy programming. It features 8KB RAM, 32KB program flash + 32KB data flash. ““MC” is short for microcontroller, and “HCK” stands for “hacking”, “hackers”, “hackspaces”, but shorter, smaller. Like the MC HCK board itself.” Its developers […]
44CON to include HackRF presentation
We understand that Michael Ossmann will deliver a talk entitled ” Reverse Engineering with HackRF” at the 44CON conference. This talk will consist of one long demonstration of how to use HackRF to reverse engineer a proprietary radio system. 44CON is an annual Information Security Conference and Training event taking place in London. Designed to […]
Lattice debuts iCEstick FPGA Evaluation Board at $24.99
Lattice Semi has released their iCEstick eval board. This board has a high-performance, low-power iCE40HX1K FPGA on board and has a USB thumb drive form factor. IO connectors include 16 LVCMOS/LVTTL (3.3 V) digital I/O connections on 0.1” through-hole connections and a 2 x 6 position Digilent Pmod connector for other peripheral connections. The board’s […]
Breakout board uses HB100 doppler motion sensor
limpkin has been working on a dev board for the HB100 microwave sensor. He developed a breakout board that allows the module to operate as a motion sensor. “I’m sure you’re quite familiar with the Doppler effect: you send an RF signal at a given frequency to a target, and if this object/person is moving […]
TI’s offers free Medical Imaging Software Tool Kit (STK-MED)
TI is making its STK-MED Medical Imaging Software Tool Kit available for free download. This Windows XP compatible software toolkit is a collection of several standard ultrasound and optical coherence tomography (OCT) algorithms for TI’s C66x™ and C64x+™ architecture. The algorithms showcase how medical imaging functions can leverage the C66x and C64x+ architecture for efficient […]
Blackhat presentation slides: Android master key
Bluebox CTO, Jeff Forristal’s presentation slide package entitled “Android: One Root to Own Them All” about his research that uncovered the Android Master Key is now available. This presentation is a case study showcasing the technical details of Android security bug 8219321, disclosed to Google in February 2013. The vulnerability involves discrepancies in how Android […]
CxemCAR 2 – Android controlled RC car with video, Bluetooth, WiFi
Johnik has developed the CxemCAR2 project for controlling an RC car using WiFi and Bluetooth. “On the Internet there are many articles on the use of RC cars with IP or Web-based camera. But most of them used a laptop or an internal router with Open-WRT or DD-WRT firmware. Viewing of the video and control […]
HackRF and POCSAG decoding
BinaryRF has posted a detailed tutorial on using the HackRF SDR to decode POCSAG pager traffic. He starts with the HackRF hardware connected to his Ubuntu Linux box. The basic procedure involves using gqrx, then pipingthe audio output to multimon decoding software using the pavucontrol program.
AmbientMonitor Arduino Javascript dashboard project
Luca Dentella posted an example on his blog about creating a full-working dashboard for Arduino (charts and gauges) in Javascript, running entirely in a web browser without the need for a webserver.without the needing of a webserver it runs entirely in a web browser. In this implementation, Luca uses the Arduino connected to an AM2302 […]
Baudline signal analysis software
Baudline is a time-frequency browser designed for scientific visualization of the spectral domain. Signal analysis is performed by Fourier, correlation, and raster transforms that create colorful spectrograms with vibrant detail. Conduct test and measurement experiments with the built in function generator, or play back audio files with a multitude of effects and filters. The baudline […]
REDHAWK SDR software
If you’re into SDR then you have probably heard of GNURadio, gqrx, SDR# and other software tools for controlling RF hardware. With the growing popularity of the HackRF platform and RTL-SDR dongle a new software tool has entered the scene: REDHAWK. As explained by its developers, “REDHAWK is a software-defined radio (SDR) framework designed to […]
Arduino retro gamebox
Based on the Arduino Uno R3, five switches, three resistors, and a couple of casino trực tuyến RCA sockets this vintage video gamebox can run versions of old school favorites including Asteroids, Sudoku, Parachute and Space Invaders. The project was developed by Darren Yates at APCMag, and he estimates its total cost at around $33. […]
Arduino based sensor shoes assist visually impaired
Student and developer Denver Dias has posted an intro to his undergrad project in Engineering: a walking aid for the blind. The walking aid consists of a pair of shoes attached with ultrasonic sensors on the sensing side. The information, obtained from these sensors, is used to form a virtual map of the surroundings. This […]