Power line communication

Haris Andrianakis wrote a post on his blog detailing his power line communication system: The main purpose was to implement two devices communicating each other, using the technology of power line. Specifically, at this project the communication has been used to send data from a weight bridge/ weight machine to a remote display. For the power line communication has […]

Tutorial: power line communications

Andrianakis Haris produced this detailed article while completing a thesis toward a B.Sc in Department of Electronic Computer Systems Engineer at Technological Education Institute of Piraeus, Greece. “Power line comnunication (PLC) is the technology that allows data transmission over the existing Power Line network. Power Line can be the home power network or the national […]

Tutorial: solid state drives and Linux

Solid state drives (SSD) are gaining in popularity, particularly as components costs and machine form factors continue to shrink. In this article from Linux Journal online magazine, Brian Trapp gives an in depth presentation on the current state of SSD’s and their advantages and disadvantages in various Linux related operations.

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 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. […]

Daisho open source multitool for phy layer monitoring

At the recently concluded TROOPERS13 conference in Heidelberg, Germany, presenters Michael Ossmann and Dominic Spill revealed the details on their Project Daisho, an open source hardware and software project to build a device that can monitor high speed communication links and pass all of the data back to a host system for analysis. They describe, […]

Carambola2 portable Dropbox uploader

Saulius has been working on this project to use the Carambola2 dev board for portable Dropbox uploading. This eliminates the need for a PC, allowing pictures from a webcam be to uploaded directly using the dev board’s built-in WiFi. Sometimes it’s overkill to use computer with 200W power consumption for 24/7 to do small task […]

Dead drop file sharing revisited

The concept of dead drops, where USB thumbdrives are installed in public places for the distribution of files “off the grid” has been a popular topic. Now Steve Schuler writes in with his new take on this concept currently featured in Science 2.0. His article describes low tech ways to place dead drop drives in […]

Ford’s OpenXC vehicle data bus interface project

At the 2013 Consumer Electronics Show (CES) Ford announced their OpenXC project, a combination of open source hardware and software that lets you extend your vehicle with custom applications and pluggable modules. It uses standard, well-known tools to open up data from the vehicle to developers. The OpenXC team explains, “OpenXC is an API to […]

I2C communications and Android applications

Here’s an open source project by Dimitar Gamishev which demonstrates how to communicate using I2C in Android applications. As shown in this project Dimitar uses this code with an A13-OLinuXino running Android to drive relays and read ADCs and GPIOs on a connected MOD-IO board. Tsvetan Usunov via the contact form.

STM M24LR04E-R 4-Kbit dual interface EEPROM with RFID

STMicroelectronics has introduced the M24LR04E-R 4-Kbit Dual Interface EEPROM with RFID. “The M24LR04E-R device is a dual-interface, electrically erasable programmable memory (EEPROM). It features an I2C interface and can be operated from a VCC power supply. It is also a contactless memory powered by the received carrier electromagnetic wave. The M24LR04E-R is organized as 512 […]

Graphing TI ez430 Chronos watch data in Processing

Chemicaloliver has written a short post describing how to graph ez430 Chronos watch data in Processing. His post includes links to the source code, which is an extension of the earlier Processing code by Sean Brewer. Originally written in 2010, this info remains relevant for newly minted Chronos hackers who’ve just received their TI packages […]

Mac floppy emu prototype

Steve at Big Mess o’ Wires has resumed work on his Macintosh floppy drive emulator project. Previously he had developed the project on a breadboard using an Altera EPM7128S CPLD and an Atmel ATMEGA32u4 microcontroller. Now he has assembled it on a project board and updated some of his components. He writes: The firmware has […]

28C3: Cellular protocol stacks for internet — demystified

Harald Welte presented this talk at the 28C3 Chaos Communication Congress in Berlin. While we use packet oriented transmissions daily over cellular networks, unlike TCP/IP and Ethernet many even in the hacker community are not familiar with the actual protocol stacks for those cellular packet networks. The purpose of this talk is to give an […]

iOS communicating with Arduino demonstration

This video from OSCON, the Open Source Convention, features Alasdair Allen demonstrating the use of Maker Shed’s RedPark Breakout Pack for Arduino and iOS. This demo the Redpark Serial Cable for iOS, which is an Apple-approved cable for connecting your iOS device to almost anything using serial communication. For more information and a link to […]

28C3: Dead drops

In this lightning talk from the recently concluded 28C3 Chaos Communication Congress in Berlin, Aram Bartholl presents updated information on the topic of dead drops. Dead drops are a means of anonymously conveying data using USB drives physically embedded in public spaces. (See this post from 2010.) This talk also highlights the existence of WiFi […]

Nimbits 3.3 is live

Nimbits 3.3 is live! With Nimbits, you can record data into “Data Points” hosted on a public or private cloud that can be connected to sensors, social networks, devices, software or anything else. The Nimbits team reports: This version of Nimbits provides full machine to machine (M2M) communication capabilities using the same protocols as Google […]