Promotional image for the gallery aspect of the exhibition
Behind the Wall was an interactive street art exhibition completed for our final masters showcase. The exhibition ran in the Science Gallery from the 1st to the 3rd of September 2017. It allowed visitors to view and learn more about Irish street artists and their work via an interactive gallery implemented using a native android app and QR codes. The exhibition culminated in an interactive experience in which users could create their own street art using an electronic spray can to wirelessly create spray art on a projected surface. A website was also created to accompany the exhibition where visitors could view their completed art and find out more about the artists profiled on the day.

Myself and my classmate Kyle Fraser were responsible for the implementation of the digital spray wall. We built a custom spray can using an Arduino UNO to run an RFID reader, bluetooth adapter and momentary push button. This spray can then wirelessly communicated with Open Processing to allow the user to dynamically create digital street art.
Scanning the QR code with the tablet gave visitors insights into the creation of the artwork in the artist's own words
Users could touch one of the colour palettes on the board to change colours, as well as changing line thickness, clearing the screen and saving their image (which was then uploaded to a website gallery). Initially we tracked a light source on the can body but due our inability to control the lighting in the gallery we went with the safer colour tracking alternative.
Some user creations (above and below) these were then displayed on the behind the wall exhibition website so users could view and download their artwork. Throughout the length of the display we observed and noted how users interacted with the product and implemented the improvements over the course of the weekend. For example we added more feedback after interaction events such as colour change, save etc, we provided both visual and audible queues to the user that an action had been completed which improved the user experience for many of the participants.
Test builds for the wireless spraycan
Behind The Wall: Interactive Exhibition
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Behind The Wall: Interactive Exhibition

Behind the Wall was an Interactive art gallery focusing on Irish street art, allowing users to create their own digital street art after viewing Read More
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