MonTagger - Graffiti Recording Device

MonTagger

Named for the protagonist of Fahrenheit 451 and French for "my tagger," MonTagger along with an OpenFrameworks Application provide a means for tracking a pen or can through CV(computer vision). To solve the problem of occlusion to the camera, the device emits 2 laser lines which intersect at the point of contact for a pen or spray can. This means that the camera simply needs to see 2 line segments to then compute where they intersect, resulting in where the pen or can is actively being used. The device only requires:

1. 2x lasers (red, green, IR...)
2. 3x AAA batteries (anything that can provide ~2.7-3.5v)
3. a push button (switch)
4. 3D printed case to attach the above to writing instrument
(Note: I would love to see a hack for laser cut parts instead, it is so much faster and accessible to recreate)