Category Archives: open source

One Time Password (OTP) doorlock

Luca Dentella has just published his latest project, an Arduino-based door lock you can open using time-based OTP codes (compliant to the RFC 6238). “The simplest way to generate those codes is the use of Google Authenticator, a free mobile app. I’ve also prepared a simple webpage you can use to configure (scanning a QRCode) […]

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 […]

Homebrew lab agitator from salvaged CD-ROM parts

Rohit Gupta cannibalized parts from an old PC and made a lab agitator from a salvaged CD-ROM drive. “It is a homebrew replacement for a chemistry lab shaker that prevents sedimentation. It has variable shaking rates and also an end stop detection to enhance the stability of the machine overall. It is quite useful when […]

OLED Backpack updates

Ed informs us that there have been a number of improvements on the OLED backpack from Fried Circuits! It’s turning into a fairly complete logging tool, now including multiscreen support (cycle between six screens with various readings), energy measurement (measuring charge in Wh and Ah), and interrupt-based reading. You can find details and updated information […]

RTL-SDR spectrum analyzer for BeagleBone Black using ViewRF software

Stephen Ong previously released this video demonstrating the use of RTL-SDR dongle with the BeagleBone dev board to function as a spectrum analyzer. The software making this possible is known as ViewRF and Stephen has now released the instructions and code links for this project.

Reversing CedarX and open Allwinner driver

Tsvetan reports some good news for the open source community: a group of hackers (jemk, wingrime, nove) worked on the reverse engineering of CedarX and an open source driver for Allwinner chips is on the way! Details on these efforts and links can be found at Olimex. Via the contact form.

FriedCircuits inline voltage/current tester board

Edouard gives us a preview of the new version of the in-line voltage/current tester board by FriedCircuits. He reports that the board is also compatible with the OLED Backpack (requires separate USB power source.) Via the contact form.

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 […]

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 […]

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 […]

Parallel virtual stack machine firmware for Arduino

Nakul Rao has been working on a virtual machine for the Arduino. He notes, ‘Why a virtual machine? Firstly, I had a lot of time. Secondly, because it can be done. Also, it is fascinating to me that a device can keep its actual hardware hidden and project an entirely different hardware to the user. […]

Video: Massimo Banzi’s Arduino tutorial series

Arduino co-creator Massimo Banzi has produced a series of video tutorials covering all aspects of the Arduino platform and IDE. These videos were produced in cooperation with RS Components and feature their Arduino Starter Kit (though any compatible Arduino board should work as well.) The introductory video appears above, with the remainder available on their […]

rompar: a tool to analyze masked ROMs

You may have seen those highly magnified photos of decapped chips displaying the hardware architecture and wondered what information is represented by the solder-like designs. Adam “Major Malfunction” Laurie of Aperature Labs has developed a software tool to assist in deciphering the bits represented in these highly magnified chip photos. Known as rompar, its a […]

panStamp developing MSP430 based module

panStamps are small open source wireless modules designed to add RF connectivity to sensors, MCUs and similar projects. The crew at panStamp is in the process of developing a new module based on the TI CC430F5137 SOC. Programming will be via the Arduino IDE, facilitated through a port being developed by the open sourceEnergia project. […]