Introductions & Video Team Members Shauna O’Hurley Nate Pfister Video
The Project Vision To develop an artistic tracing product that is intuitive, fun, and practical. By utilizing available technology in addition to self- created solutions the product could be utilized as a teaching tool to make notes from a distance, a toy for children of nearly any age to play with, and a platform for hobbyists to use for any related purpose. Target Audience Children Educators Artistic hobbyists You?
Raspberry Pi Benefits Inexpensive Small form factor Debian Linux Easy-to-use Non-CPU intensive “Fast enough” ARM Processor – Overclocked at 800 MHz Cons Despite being “fast enough”, could be faster Some noticeable lag Sampling rate for IR sensor too low (Software issue, mainly) Requires a bit of set up in order to be functional An image of the RPi created after each working code change Requires at least a Class 10 SD card to run efficiently
Infrared LED Pen IR LED Pushbutton Switch 1.5V AA Battery Expo Marker
Software Written exclusively in python Original open source software originally created by StephaneDuchesneau of MIT Outdated and incomplete, but usable after a lot of trial-and-error Majority of modifications made in the GUI Uses GTK and wxPython for the GUI libraries, framework, etc. Requires several packages in order to run Will remain open source
Project Management JIRA, Confluence and Tortoise SVN were primarily used Dropbox, email, text and verbal communication also used rather extensively
Doing it Over Again? Only major roadblock was Bluetooth connectivity, so getting that working earlier on would be a HUGE benefit Focus on software development earlier on so more could be implemented Work on documentation throughout the quarter instead of the majority at the end (stay on top of JIRA updates) Keep Confluence (or a similar blog) updated regularly; it’s interesting to us, so it should be interesting to someone else!
Future Goals Increase sampling rate Modify GUI to remove unnecessary functions Allowing tracing over background Alternatives for IR sensor More graphical choices for pen Effects that “follow” the cursor, change the cursor itself, etc.
Special Thanks to: Antonio Mondragon Skrum master Geoff Bastian Skills in the machine shop Johnny Lee Initial idea for the project