Using the popular Bluetooth Bee, Legwinskij has demonstrated a method of uploading Arduino sketches wirelessly using a Bluetooth-enabled PC. Although the process is not entirely automated at this stage, it will be a project worth monitoring - as once the process is completed it will make updating the software on embedded Arduino systems much easier. The following is a short demonstration of the current process:
For more information and the current progress, visit Legwinskij's blog here. Andfor morenews, updates and items of interest.please follow us on twitter, Facebook and Google+.
The Bluetooth Bees are a convenient method of connecting your projects with Bluetooth, and also fit in any socket designed for an XBee. Once paired with another Bluetooth device such as an Android phone or tablet, it is easy to monitor data from the serial output via terminal emulation software on the device.
Although many people try and investigate the actions of others using the Internet, cracking passwords and so on, nothing beats good old fashioned espionage and with that in mind is this FM radio transmitter. Naturally it has other applications such as a baby monitor, one-way front door intercom or just to fool about with a car radio. Using a minimum of parts and powered by a simple coin battery, this transmitter can operate on a frequency of between 80 and 150 MHz, with a range up to 100m.
It is easy to build and only requires a few components, some stripboard and soldering. To get started, see the instructions page here. Andfor morenews, updates and items of interest.please follow us on twitter, Facebook and Google+.
If you are interested in analogue electronics such as the radio bug described, a great starting point is the book "Getting Started in Electronics" by Forrest Mims III:
Over 128 pages he teaches you the basics, takes you on a tour of analog and digital components, explains how they work, and shows you how they are combines for various applications. It even includes circuit assembly tips and 100 electronic circuits and projects you can build and test. Even if you're not new to electronics, this book makes a great shop reference.
With the knowledge that an ATtiny2313 can generate simple VGA video signals, the team from EOSystems have designed and published the details for a small and useful VGA monitor tester. Working with resolutions up to 1280x1024 @ 60 Hz the tester can generate a variety of colour screens and bars. Although that doesn't sound like much, this would be very useful for quickly testing used monitors in a corporate or recycling centre before redistribution or destruction.
The entire tester could be made on a small piece of stripboard, or you can download the PCB image along with the schematic and AVR .hex file at the project website here. Andfor morenews, updates and items of interest.please follow us on twitter, Facebook and Google+.
To build your own VGA tester we have the ATtiny2313, prototyping boards and a wide range of electronics components. Or if you are looking to create more complex VGA-interfaced output, investigate the 4D Systems Picaso VGA Controller. It can generate a wide varity of text and graphics up to a resolution of 800 x 480 with simple serial commands: