Multi proyectos 0073

Here is how it works. I have an Arduino Duemilanove with ATMega328 which has two photo-resistors connected (with a 10k pull down resistor). I set up two laser pointers to shine a laser directly onto the photo-resistor (which is enclosed within a dark box). The Arduino monitors the values returned from the light sensor, and watches for any changes that indicate that the laser bean has been broken. When both laser beams are broken, the Arduino calculates the amount of time between when each sensor was tripped. It then sends that value to the Adobe AIR based client, which is connected to the Arduino via USB / Serial port and a serial port proxy (in the case, TinkerProxy).

[...]This PayPal vending machine on exhibit at the PayPal X Innovate 2010 developers conference was created by Ray Tanaka and his crew at PayPal Labs.

They hacked together the multi-part system using a mechanical candy dispenser, a couple of Arduino Duemilanove, a WiShield, relay, proximity sensor, and LED display.

The end result allows you to scan a QR code, make a payment, and acquire munchies using a smartphone. As you make your payment, the machine will tweet your purchase and notify a confirmation display.

The attendees (and many speakers!) definitely enjoyed the hands-on tinkering, both at the lab and the village. We also saw a substantial number of attendees committing two hours for the Arduino lab. Echoing Amsterdam, Arduino was a great feature for HITB Malaysia this year – it was very popularly received by a highly enthusiastic HITB dotMy audience.

For now, the HITB team’s catching up on sleep. Our next conf will be in Amsterdam in May 2011 – hopefully we’ll see some of you there!

So i’ve been working on this project for a while now as part of my thesis and independently and work is still continuing. So just an overview the project is a multi-touch and multi-modal input sensor that can be utilised behind traditional LCD panels utilising a new method to detect inputs. By using a large IR sensor array consisting of 128 sensors behind the LCD panel and IR light source in front of the Panel we are able to augment the display with the ability to sense a variety of objects near or on the surface; including fingers tips and hands and thus permitting us to enable multi-touch interaction. The inherent nature of the senors allows us to create a low cost high fidelity image sensor allowing us to take advantage of optical sensing which also allows other physical items to be detected, and thus permits us to develop multi-modal interaction schemas.