Mar 31 AT 12:30 PM Clark Wimberly 19 Comments

A Nerf ball with 9-axis inertial sensing motion processing with integrated Bluetooth? There’s an app for that.

File this under things you didn’t know existed but now that you do you totally want one. We were just emailed a video of someone demonstrating Perfect Spiral Trainer, an app powered by what the guy is calling his Replay Football system, which tracks a modified Nerf ball in-flight and reports back all sorts of interesting data via Bluetooth.

Uhhh, what? Just watch video below:

From the YouTube page and original creator:

It employs a Nerf football with a 9-axis motion sensing pack and a visualization / throw analysis application on an Android platform. The football transmits real-time motion data via Bluetooth. A Motorola Droid 2 was used for the Android platform. The sensor pack is by InvenSense.

Once a throw/catch pair have been detected, the football graphic turns red and the program enters replay mode. To replay the throw, the user performs a tap motion on the screen to start playback. The throw release speed, time in flight, RPM of spiral and spiral wobble (precession) are all displayed during playback. The 3 graphs ( from top to bottom) display the raw data from the Accelerometer, Gyro, and Magnetometer respectively. A long-press on the screen resets the state back to ‘green’ to accept a new throw for analysis.

We ran into the team from InvenSense back at CES in January and were impressed with a bunch of the stuff they were working on. They’re working on a whole range of sensors and middleware for tracking movement in the real world and this football application is a solid demo of that- even if it is just for fun.

What other crazy real-world motion tracking applications do you guys think we’ll see in the future? It’s quite a shift to start imagining for things that don’t particularly involve my phone itself moving but it’s a shift I think I could get used to.

Clark is a developer living in Austin, Texas. He runs ClarkLab, a small web firm with his wife, Angie. He's a big fan of usability, standards, and clean design.

    Most Tweeted This Week

  • BiGMERF

    things must be slow in the android world right now

    • http://Website S

      No appreciation for athletics I presume…

    • http://Website Sarah Palin (the republican hood rat)

      because everyone is impatiently awaiting
      the new star smartphone
      >>iPhone 5<<
      designed by Apple Inc. in Cupertino, CA

      • http://Website MUSLIMBOMBA

        she said

        because everyone is impatiently awaiting
        the new star smartphone
        >>iPhone 5<<
        designed by Apple Inc. in Cupertino, CA

      • http://Website Jorge

        Get some new material that joke is pretty bad.

      • http://Website the helping hand

        Sarah Palin (the republican hood rat) wrote

        “because everyone is impatiently awaiting
        the new star smartphone
        >>iPhone 5<<
        designed by Apple Inc. in Cupertino, CA"

      • http://Website Sarah Palin (the republican hood rat)

        because everyone is impatiently awaiting
        the new star smartphone
        >>iPhone 5<<
        designed by Apple Inc. in Cupertino, CA
        .

    • http://Website BiGMERF

      things must be slow in the android world right now.

      • http://Website BiGMERF

        things must be slow in the android world right now..

  • http://Website JQ

    I’d like to see them make a way to fine tune a GPS signal between phones, as in figure out where another phone nearby is in relation to your phone, by using that you can get a more accurate location where you are, or even give another phone that has limited or zero GPS signal a stronger signal. I guess what I’m talking about is kinda like a ground map, as opposed to satellites.

  • http://Website ╦

    fraudroid sucks balls

  • http://www.microsoft.com/ Steve Ballmer

    Apple users shan’t be jealous GOOG is literally twice the Share Price as AAPL in a matter of years… there’s a reason for that kids! It’s called… OPEN SOURCE, you have 10 million iphones that all look the same, have the same OS, same icons, everything. CLOSED like Steve Jobs Momma’s legs should have been! What what! GET*EM!

    • http://Website William Bill Gates

      i have an iphone too and iam very proud of it. united we stand.
      the few, the proud, the iphone owners!

      • http://Website zhect

        The few?, the PROUD!(too proud)!, the fanboys.

      • http://Website William Bill Gates

        i have an iphone too and iam very proud of it. united we stand.
        the few, the proud, the iphone owners!!!

  • http://Website Adryan

    Not adding to the war goin on up above. Anywho THAT APP IS AWSOME. IT has so many implications. Im going to stick a blue tooth in me and see what kind of readings i can get.LOL. But seriously this is pretty awsome

  • http://Website Paul

    I imagine football teams/coaches and such would be interested in something like this. I mean, imagine being able to train all your players to throw the ball the most optimally. Kick it the most optimal. Learn what a simple rotation 1 degree before kicking it does for the aerodynamics and such. If every time the football was ‘in play’ by the team was optimal it’d give them quite an advantage.

  • http://SOYeah Dysstatic

    I have an iPhone 4 too. Few days ago I bought the girlfriend a Samsung Galaxy S I9000T which I have flashed to Gingerbread and rooted. I’m extremely impressed. This is the first time I’ve had a chance to play with an Android phone for a long period, and the first time I’ve played with one on Gingerbread.

    Eclair was pretty average. GB is just plain awesome. I feel the need to get myself an Android handset now just to play around with :D

    • http://Website CEO of Samsung

      you are a moron, an iPhone 4 is much better than a buggy samsuck device!!!!

  1. things must be slow in the android world right now

    • SGuest 4 years ago

      No appreciation for athletics I presume…

    • Sarah Palin (the republican hood rat)Guest 4 years ago

      because everyone is impatiently awaiting
      the new star smartphone
      >>iPhone 5<<
      designed by Apple Inc. in Cupertino, CA

      • MUSLIMBOMBAGuest 4 years ago

        she said

        because everyone is impatiently awaiting
        the new star smartphone
        >>iPhone 5<<
        designed by Apple Inc. in Cupertino, CA

      • JorgeGuest 4 years ago

        Get some new material that joke is pretty bad.

      • the helping handGuest 4 years ago

        Sarah Palin (the republican hood rat) wrote

        “because everyone is impatiently awaiting
        the new star smartphone
        >>iPhone 5<<
        designed by Apple Inc. in Cupertino, CA"

      • Sarah Palin (the republican hood rat)Guest 4 years ago

        because everyone is impatiently awaiting
        the new star smartphone
        >>iPhone 5<<
        designed by Apple Inc. in Cupertino, CA
        .

    • BiGMERFGuest 4 years ago

      things must be slow in the android world right now.

      • BiGMERFGuest 4 years ago

        things must be slow in the android world right now..

  2. JQGuest 4 years ago

    I’d like to see them make a way to fine tune a GPS signal between phones, as in figure out where another phone nearby is in relation to your phone, by using that you can get a more accurate location where you are, or even give another phone that has limited or zero GPS signal a stronger signal. I guess what I’m talking about is kinda like a ground map, as opposed to satellites.

  3. ╦Guest 4 years ago

    fraudroid sucks balls

  4. Steve BallmerGuest 4 years ago

    Apple users shan’t be jealous GOOG is literally twice the Share Price as AAPL in a matter of years… there’s a reason for that kids! It’s called… OPEN SOURCE, you have 10 million iphones that all look the same, have the same OS, same icons, everything. CLOSED like Steve Jobs Momma’s legs should have been! What what! GET*EM!

    • William Bill GatesGuest 4 years ago

      i have an iphone too and iam very proud of it. united we stand.
      the few, the proud, the iphone owners!

      • zhectGuest 4 years ago

        The few?, the PROUD!(too proud)!, the fanboys.

      • William Bill GatesGuest 4 years ago

        i have an iphone too and iam very proud of it. united we stand.
        the few, the proud, the iphone owners!!!

  5. AdryanGuest 4 years ago

    Not adding to the war goin on up above. Anywho THAT APP IS AWSOME. IT has so many implications. Im going to stick a blue tooth in me and see what kind of readings i can get.LOL. But seriously this is pretty awsome

  6. PaulGuest 4 years ago

    I imagine football teams/coaches and such would be interested in something like this. I mean, imagine being able to train all your players to throw the ball the most optimally. Kick it the most optimal. Learn what a simple rotation 1 degree before kicking it does for the aerodynamics and such. If every time the football was ‘in play’ by the team was optimal it’d give them quite an advantage.

  7. DysstaticGuest 4 years ago

    I have an iPhone 4 too. Few days ago I bought the girlfriend a Samsung Galaxy S I9000T which I have flashed to Gingerbread and rooted. I’m extremely impressed. This is the first time I’ve had a chance to play with an Android phone for a long period, and the first time I’ve played with one on Gingerbread.

    Eclair was pretty average. GB is just plain awesome. I feel the need to get myself an Android handset now just to play around with :D

    • CEO of SamsungGuest 4 years ago

      you are a moron, an iPhone 4 is much better than a buggy samsuck device!!!!