Whether this is a method for recording the number of sighs a person makes over a period of time, an avante-garde artform or a device to monitor one's mental state of mind, the "Sigh Collector" is an interesting example of using an Arduino to solve a problem. It works by monitoring the chest size, and wirelessly sending the data back to a control unit which inflates a bladder after each sign. For example:
For more information and design details, visit here. To get started with your own Arduino-based projects, consider our Freetronics Eleven - the Arduino-Uno compatible with low-profile USB socket, onboard prototyping space and easy to view LEDs:
