Curiosity killed the cat, but this project only sprays them with water. Tinkernut posted this humorous project useful for animal control in the kitchen. It uses an Arduino/PIR combo to sense motion and activate the auto trigger on a Raid spray bottle (of course, after emptying and thoroughly cleaning the Raid bottle.) When strategically placed […]
Category Archives: open source
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 […]
Novena, the open source computing platform
Bunnie has announced the launch of Novena, a new open-hardware computing platform: Novena is a 1.2GHz, Freescale quad-core ARM architecture computer closely coupled with a Xilinx FPGA. It’s designed for users who want to modify and extend their hardware: all the documentation for the PCBs are open and free to download, and it comes with a variety […]
Arduino based ‘Etch A Sketch’ laser cutter
Martin Raynsford writes about his latest Arduino based project: We switched out the standard controller with an Arduino (just in time for Arduino day) and connected two rotary dials to directly manipulate the X and Y axis. As long as the laser only cuts while the axis are moving then we should avoid fires. We’ll […]
LemcUSB: software USB for EFM32ZG (ARM Cortex M0+)
Viswa informs us that the Lemcu.org crew have implemented a purely software based USB peripheral for ARM Cortex M0+ devices and a made a tiny Quick start board for EFM32ZG110 MCU. “This software enables Cortex M0+ devices to act as a Low speed USB device. It includes a lightweight USB & HID Stack and can […]
New Energia version available
The Energia team announces the availability of version 0101E0012. We wrote about it previously: Energia is an open-source electronics prototyping platform started by Robert Wessels in January of 2012 with the goal to bring the Wiring and Arduino framework to the Texas Instruments MSP430 based LaunchPad. Energia uses the mspgcc compiler by Peter Bigot and […]
Open source hardware GPIB USB adapter update
Steven Casagrande posted an update on his open source hardware GPIB USB adapter: After many days, I just finished off firmware version 5 for my adapter. This is probably my biggest update yet. A lot of people asked for compatibility with the Prologix commands so that’s what I focused on. Here is an overview of the […]
RTL-SDR wide spectrum analyzer
Claudio Giuliani has designed an RTL-SDR based wide spectrum analyzer. The code is available on AlterVista. Software prerequisites are a Linux box (no Windows/OSX version) with Gnuradio and rtl_sdr utilities installed. The spectrum analyzer program is a frontend GUI of rtl_power for spectrum visualization and control and is coded in Basic for Gambas (a sort […]
Using REST with Arduino Yun
Boris Landoni from Open Electronics writes: With this short guide we release today, we will explain you how to use your Arduino Yun to do something that was never accomplished before with a board of such family. We’ll face a real embedded project, with its set of sensors and management and control applications. Thanks to […]
HackRF One with gr-remotecar
In this video a HackRF One is used to transmit commands to a RF remote controlled toy car. A GNURadio module is used to generate the control signal, and a Qt(PySide) GUI to listen for keyboard presses. The open source code is available on GitHub.
Open source STM32 vehicle tracker
X89300 shared his STM32 car tracker project, that is available at Github: Features: STM32 48/64 pins (F10X, F20X, F40X, L151) GSM Telit GL685/GL868 GPS/GLONASS SL868/SL869 Accelerometer MMA7455 CAN bus (need MCU with CAN support) 2 input, 1 output signal Standard SIM or SimOnChip Only for 48 pins version Side connector for extension pcb Only for 64 pins […]
USB Wrapper project
scasagrande has designed this USB wrapper project, that is available at Github: Have you ever wanted to charge your smartphone by using your computer, but you didn’t want all of your sync software to load? Maybe you want to use a friend’s computer but you don’t really want Windows to start trying to install drivers and for your […]
ATmega169 base 8bit Arithmetic and logic unit
ATmega169 base 8bit Arithmetic and logic unit, an open source software project by Dilshan Jayakody: ALU (Arithmetic and Logic Unit) is a digital system that performs integer arithmetic and logical operations. In this post we introduce ATmega169 base ALU simulation using Proteus. This is 8bit ALU, and functionally it is similar to other entry level ALUs […]
Open source data logger for biodiversity research
Ed Baker of the Natural History Museum, London, UK, has published a paper outlining his build of an open source hardware data logger for scientific purposes. “Proprietary data loggers can be expensive – for example a three channel data logging system is available from Alphatemp for £465.00. Such costs make large scale deployment of such […]
Academic paper: hacking with RF replay attacks
If you’re new to RF hacking you may have heard the term “replay attack” and wondered what it takes to implement one. In this academic presentation Practicing a Record-and-Replay System on USRP a group of researchers from the Shenzhen Key Lab of Advanced Communications and Information Processing and Shenzhen University, give a succinct and practical […]
LuxBlaster: Arduino controlled light sensor/response device
Techbitar writes, LuxBlaster is an Arduino gizmo that detects and tracks the most intense light source then sends back an intense light in the same direction. Beware, rude drivers. The LuxBlaster is coming!! When you drive at night, every once in a while a car will approach you from behind with its annoying high beam […]
Arduino network uptime monitor with Twitter updates
Steve from Hackshed.co.uk has posted project details on their Arduino network monitor. They use an Arduino, an Arduino Ethernet Shield, the Twitter Library and the ICMP Ping Library by Blake F to monitor the network and send updates via Twitter. He reports, “It was actually surprisingly easy; we had the Twitter posting code from the […]
A look into the Open Source Hardware Community
Simone Cicero over at Open Electronics writes: AS you may know, just few weeks ago OSHWA published the results from 2013 Open Hardware Community survey. You can find original datasheets and everything here. Despite raw data is good, I thought it was good to spend some time looking at the data trying to gather more insights, when […]
Listening to D-STAR digital voice with DSD 1.7
Brazilian amateur radio operator PU2VLW has written a post (in Portugese) detailing how to use DSD version 1.7 to decode amateur radio D-STAR digital voice transmissions. (Google translate may be helpful.) DSD can be downloaded as source from GitHub. His setup uses a Windows machine running SDR# to receive the D-STAR signal using an RTL-SDR […]
Digitally controlled HiFi Amp with 4 way mixer
Michael shares his project files for a digital HiFi amp featuring a 20 W stereo power amplifier, 4 way audio in and digital volume control interface. Though I am a musician I don’t care for calling an expensive hi watt stereo my own. For years I have used a homebuilt stereo amplifier built around the […]