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#motioncapture#matlab#robotics

Automatic Bullseye, MOVING Dartboard

Mark Rober

85M subscribers • 5 videos on Hallway

YouTube
  • Recommended by 2 people: 2 on Hacker News.
  • Presented by Mark Rober, engineer and YouTuber

Beginner. No background in the topic needed.

24M views9 years ago2 recommendations

HardwareSystems programmingEmbedded systemsAlgorithms

Mark Rober demonstrates a custom-built dartboard that uses motion capture and real-time tracking algorithms to move and catch darts in the center.

I have been working on this board for over 3 years. Super pumped to finally share it with all y'all. Here is a link to some of the software we wrote: dropbox.com/s/rlmhdjoqzyumme1/darts.zip?dl=0 MUSIC- - I'm so- Andrew Applepie- andrewapplepie.com/ - Cereal Killa- Blue Wednesday - soundcloud.com/bluewednesday/ - Berlin- Andrew Applepie- andrewapplepie.com/ - Special song written just fo my bad self- Lincoln Hoppe, lincolnhoppe.com/ - Too Happy to be cool by Notebreak- soundcloud.com/notebreak/dubstep-too-happy-to-be-cool Summary: I fulfilled a 3 year long dream to create a dartboard where you get a bullseye every time thanks to some engineering. Basically, you throw a dart and then a Vicon motion capture system tracks the dart in the air. We use those x,y,z positions in matlab to predict where the dart will land using some regression analysis. Once we know where it will land, we move the board to the right spot using 6 stepper motors that attach to the back of the board using fishing line. All of this happens in 400ms or so. Then we took it to a bar to see what people would think of it (SPOILER ALERT: they liked it) PLEASE CONSIDER SUBSCRIBING: tinyurl.com/MarkRober-Sub ****************************************­ I make videos like this once a month all year long while supplies last: CHECK OUT MY CHANNEL: tinyurl.com/MarkRober-YouTube FACEBOOK: facebook.com/MarkRoberYouTube TWITTER: twitter.com/#!/MarkRober INSTAGRAM: instagram.com/markrober/

Why it's here

2 people recommend this

What people say. Engineers share this video as an inspiring and impressive demonstration of real-time tracking and mechanical engineering.

jonathanfosteron Hacker News • Recommends

On “Carnival scam science, and how to win [video]”

The actual video is by Mark Rober and man you gotta check out his YouTube channel 1. I've been in a technical slump here recently and watching his videos totally re-energized me. He reminded me how great it feels to explore, build, and solve problems. Another great video is his automatic bulls eye dartboard 2. 1 link 2 link to this video

anonuon Hacker News • Recommends

On “Glitter bomb tricks parcel thieves”

This is an an awesome project... the kinda stuff I wish I had more time to hack away at... In the video he mentions his automatic bullseye dartboard project... even more impressive than this glitter machine IMHO: link to this video Calculating a projectile's trajectory in realtime.... wouldn't even know where to start. EDIT: dartboard code from that youtube link: link

JshWrighton Hacker News • Mentions

On “Show HN: A basketball hoop to maximize shots that go in [video]”

Mark Rober (who is linked elsewhere in this thread for a dart board that does the same this as this backboard, but with active compensation) also did a video on how carnival games are rigged. Dart Board: link to this video Rigged Carnival Games: link (Bonus, in the theme of sports equipment that wins for you) Auto bowling ball: link