Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It's intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments.

Processing is an open source programming language and environment for people who want to create images, animations, and interactions. Initially developed to serve as a software sketchbook and to teach fundamentals of computer programming within a visual context, Processing also has evolved into a tool for generating finished professional work. Today, there are tens of thousands of students, artists, designers, researchers, and hobbyists who use Processing for learning, prototyping, and production.

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Pin usage details for 244 shields from 107 makers, and

Arduino Shield Bounty

Arduino Ethernet is a collection of libraries I have written to use within the Arduino programming environment in conjunction with the Ethernet shield. While the individual libraries are downloaded within a single archive, they do not depend on each other (unless noted otherwise) and can be used independently. The libraries are published under the GPLv2 (or, at your discretion, any later version). Individual libraries EthernetBonjour | Documentation EthernetDHCP | Documentation EthernetDNS | Documentation Also, by popular demand, I've prepared a very simple demo sketch using DNS, DHCP and Bonjour together. Basically, it gets network configuration data via DHCP, then lets you resolve DNS names via the DNS server received from DHCP, all while announcing its DHCP-assigned IP address via link-local Bonjour — Basically a combination of examples from the individual libraries, which I also recommend to look at, as they contain lots of comments explaining how stuff works.

Get a token to post a message using OAuth.

Add some Libraries to your Arduino IDE.

Download the Arduino Tweet Library and put Twitter folder into ~/Documents/Arduino/libraries (Mac) or My Documents\Arduino\libraries\ (Windows). If there is no such folder, please create it. Download the EthernetDNS Library from gkaindl.com and install it. Re-launch the IDE. Detailed information about libraries installation.

Socket Communications CompactFlash RFID Reader Card 6E ( RF5400-542 )

Product Details Integrated Type II CF card plugs into the Type II CompactFlash slot of Windows Powered Pocket PCs Reads and writes to ICode 1, Tag-It HF and PicoTag proprietary HF tags Reads and writes to the most popular HF ISO 15693 tags, including ICode SLI/SL2, LRI512, my-d and Tag-It HF-I High frequency, 13.56MHz reader/writer Add plug-in RFID capabilities to Pocket PC applications

$186.60