MonTagger - Graffiti Recording Device

thingiverse

Human: MonTagger Named for the protagonist of Fahrenheit 451 and French for "my tagger," MonTagger teams up with an OpenFrameworks Application to provide a way to track a pen or can through computer vision. To solve the problem of camera occlusion, the device emits two laser lines that intersect at the point of contact for a pen or spray can. This means that the camera simply needs to see two line segments to then calculate where they intersect, resulting in where the pen or can is actively being used. The device requires just three things: Two x lasers (red, green, IR...) Three x AAA batteries (anything that can provide ~2.7-3.5v) A push button (switch) The MonTagger needs a 3D printed case to attach the above to a writing instrument. Note: A hack for laser cut parts would be great instead, it's so much faster and more accessible to recreate. Print Settings Printer Brand: Formlabs Printer: Form 1 Rafts: Doesn't Matter Supports: Yes Resolution: 0.05mm Notes: Printed on the Form 2 printer with wonderful results. Note: Try and keep the supports off of the threads. How I Designed This I started by analyzing the cross section of the form in Fusion360. A rendering of the soon to be finished product Custom Section MonTagger Software MonTagger relies on some OpenCV detection to calculate where the drawing is occurring. More information will be posted soon about this on Github, here: https://github.com/jbobrow/MonTagger