The Arduino Mega is the latest micro-controller from the Arduino team. The Mega is built around the ATmega1280. It’s perfect for anyone looking for more room for code or to be able to control a lot more LEDs, sensors, servos, or motors. It has 54 digital input/output pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4 UARTs.
Arduino Mega - [Link]
Pyxis OS is an amazing arduino based operating system. Based around the Arduino hardware platform, it adds some pretty impressive features, such as the ability to run programs from an SD card, read/write to a FAT filesystem, and easily display graphics and GUI elements on a color LCD. [via]
Pyxis OS, an operating system for Arduino - [Link]
Compatible with Arduino software environment (thanks to the Sanguino board, from which it was inspired), Duino644 offers more capabilities than a regular, ATmega328-based Arduino, in the same price range.
Duino644 was originally designed to be used in an advanced new version of Wise Clock. It features the same combo RTC + EEPROM as Wiseduino, and also an SD card socket and connectors for the 24×16 LED matrix display from Sure Electronics.
Duino644: Arduino clone powered by ATmega644 - [Link]
Matt at Liquidware.org posted 10 simple mini tutorials about what to do if you just received your arduino board. Code is attached explaining how to write a function to make a led blink or communicate via RS232. This is a nice introductory course to learn the basics about Arduino coding.
10 things to do with a new Arduino - [Link]
Using Arduino True Battery Capacity Tester you are able to measure the charging capacitance of Li-Ion/NiMH/NiCD/Pb batteries and display results on character LCD screen or aquire full discharge characteristic graph on PC. Tester supports auto battery type detection and discharge takes from 30-120 minutes to complete, giving you an indication of battery’s quality.
Arduino True Battery Capacity Tester (Li-Ion/NiMH/NiCD/Pb) - [Link]
This liquid level sensor measures the capacitance of the liquid between two electrodes and gives an indication of liquid level inside a bottle. Capacitance is measured by charging the capacitor and measuring the time needed to discharge via a known resistor. The brain of the sensor is an Arduino board.
A capacitive liquid sponsor relies on the fact the the capacitance or charge between 2 metal plates will change (in this case increase) depending on what material is between them. This allows us to create a level sensor that is save for use with any liquid, this one will be used in a buggy with gasoline
Building a Capacitive Liquid Sensor - [Link]
This is an Arduino-Based Stereo Audio switch which can be controlled over a LAN using a web browser.
Peter at solderintheveins.co.uk writes:
Use a 5v DPDT relay, a few 3.5mm stereo sockets and an Ethernet-capable Arduino to create a simple audio switch which would allow me to switch one audio source (my PC’s Soundcard in this case) to one of two outputs (headphones or speakers) via a web interface running on the Arduino from the comfort of my web browser.
Simple LAN Controlled Stereo Audio Switch - [Link]