Tom has designed this Magic Mote wireless sensor, that is available at Github: I set out to design a wireless sensor PCB that could be inexpensively prototyped in quantities of 10. NRF24L01+ modules are exceedingly cheap (~$10 for 10), use very little power, and have sufficient range for most indoor projects. Low power MSP430 microcontrollers make an ideal […]
Category Archives: wireless
Video: Maker Faire NY 2013: Arduino NFC
In this video from the 2013 Maker Faire New York, Don Coleman takes the stage in New York to discuss Near Field Communication (NFC) using the Adafruit and Seeed Studio NFC shields on an Arduino. Coleman is a software developer and is co-authoring a book on NFC, PhoneGap and Arduino for O’Reilly. Via Make.
Black Hat 2013 video – build of an Android SpyPhone app
Ever wonder what it would take to code up an Android based spyphone app? In this presentation from the BlackHat 2013 conference, Kevin McNamee outlines his build of an Android SpyPhone service that can be injected into any application. “The presentation includes a live demonstration of how phones can be tracked and operated from a […]
Updating CC3000 firmware with Arduino
Kyle Gordon purchased a CC3000 module from EBay and found that it wasn’t completely compatible with the Arduino library available from Adafruit. The problem arose from the module having an earlier firmware version. So Kyle devised a method using two Arduino Pro Minis to load updated firmware to the CC3000. For more details, you can […]
GNU Radio demo: ultrasound data transmission via a laptop
Here the open source GNU Radio companion program is used to demonstrate the transmission of data from one laptop to another using frequency shift keying (FSK). They use an audio carrier frequency of 23 kHz. You can download the code for the GNU Radio companion flowgraph at Anfractuosity.com.
Ambient Backscatter – Wireless power and communication with no batteries
Ambient Backscatter – Wireless power and communication with no batteries Ambient Backscatter transforms existing wireless signals into both a source of power and a communication medium. It enables two battery-free devices to communicate by backscattering existing wireless signals. Backscatter communication is orders of magnitude more power-efficient than traditional radio communication. Further, since it leverages the […]
KORUZA, the open-source open-hardware wireless communication system
KORUZA, the open-source open-hardware wireless communication system by Luka Mustafa – Musti KORUZA is an innovative open-source open-hardware wireless communication system, employing a new low-cost approach to designing free-space optical network systems, enabling building-to-building connectivity with a highly collimated light beam at a capacity of 1 Gbps (1000 Mbps) at distances up to 100 m. It […]
Video: Reversing Tire Pressure Monitors with SDR
In this presentation from the recent Toorcon 15 in San Diego, CA, Jared Boone, co-developer of the HackRF SDR detailed his efforts in reversing tire pressure monitors found on most vehicles. Tire Pressure Monitoring Systems (TPMS) are present on all US automobiles sold as of 2008. This talk, given at ToorCon 15 in San Diego, […]
emonTH – Wireless temperature and humidity monitoring node
Glyn Hudson over at OpenEnergyMonitor has developed this remote temperature and humidity monitoring node, the emonTH: The emonTH supports both the DHT22 (humidity and temperature) and DS18B20 either onboard or remote temperature sensor. The default software will search for the presence of either sensor at startup. If both sensors are found it will return humidity from the DHT22 […]
Video: Breaking SCADA communications
In this presentation from the InfoSec 2013 conference held October 3, 2013 in Louisville, Kentucky, Mehdi Sabraoui discusses the relative insecurity of SCADA network protocols. He covers the Sixnet Tools, taking advantage of a proprietary communication protocol supported by nearly all of Sixnet’s SCADA devices to compromise these devices across a network. Mehdi is a […]
Amateur radio TV beacon inside CCTV case
András Veres-Szentkirályi write about an interesting project The Budapest hackerspace (hsbp.org) did some joint work with a local ham radio club and created an SSTV beacon housed inside a CCTV case that takes an image of its environment and transmits it using slow-scan television over ham bands. There’s currently one experimental device installed, and since […]
iSEC Open Security video: Hacking the Wireless World
In this presentation from the iSEC Open Security Forum, September 12, 2013 in Palo Alto, CA, Balint Seeber, Applications Engineer and SDR Evangelist / Ettus Research, provides an introduction on how to analyze and hack RF communications systems using open source software and cheap radio hardware. He describes, “The focus will be on how to […]
Mobile phone/Arduino Bluetooth interface
Kerimil has created another app for interfacing mobile phones and microcontrollers through Bluetooth. This time it’s a simple phone controlled RGB LED. The Arduino sketch/code can be found in his Arduino Forum post. The Android .apk file can be downloaded from Google docs, as well as a zip file containing the Android source. Via the […]
Joystick controlled pan tilt kit
Bajdi writes: One of the things I bought is a small plastic pan tilt kit. I got it on Ebay. It didn’t come with the servos. But I still had some small Micro 9G servos that fit the kit. To try it out I hooked up the little servos to one of my Bajduinos. I […]
Arduino announces new Arduino Yun board
The Arduino crew has announced the Arduino Yun. This latest addition to the Arduino family is a “combination of a classic Arduino Leonardo (based on the Atmega32U4 processor) with a Wifi system-on-a-chip running Linino (a MIPS GNU/Linux based on OpenWRT). We embedded the Linux machine directly on the PCB of the Arduino Leonardo and we […]
Bringing OpenWRT to TL-WA801ND v2 (Part 2, building OpenWRT)
TasksOfOhm has posted a detailed tutorial on building OpenWRT on TL-WA801ND v2 : After getting some details about the board it was time to create a build environment. In my case this was just about copying one of the VMs I have prepared just for this purpose. The build environment requires a Linux machine whereas it doesn’t […]
Silvercrest (Lidl) TwinTalker 4810 446MHz PMR radio teardown
Joe Desbonnet acquired a Silvercrest (Lidl) TwinTalker 4810 PMR radio and decided to explore under the hood. PMR radios are a European equivalent of low power Family Radio Service and General Mobile Radio Service walkie-talkies used in the USA, but operate on the 446 MHz frequency band. Most use analog FM, though commercially targeted models […]
Change HC-05 Bluetooth module settings via AT commands
TechBitar writes, “This is a utility that shows how to change the settings of the ubiquitous HC-05 Bluetooth module using the AT command set. The HC-05 comes with a rich set of AT commands to perform various tasks such as changing the module’s default settings including changing the pass code, the device name, and the […]
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. […]
CreepyDOL WiFi surveillance project debuts at Blackhat/DEFCON
CreepyDOL, the Creepy Digital Object Locator, is a distributed tracking system that uses low-cost hardware sensors, a robust communications system, and simple observation to give near-real-time identification of humans and tracking capabilities to anyone. It’s goal is to develop hardware and software for passive surveillance of WiFi data and draw inferences regarding human behavior therefrom. […]