Babolat Play Play-Test Thread

Discussion in 'Racquets' started by stopthewave, Nov 21, 2013.

  1. stopthewave

    stopthewave New User

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    I thought starting a new thread for the Babolat Play play-testers would be better than clogging up Daniel's thread.

    I received my Babolat Play today as part of the Babolat Play Test Team. I was selected through the ConnectedTennis.com site.

    Anyways, I obviously couldn't wait to go hit with it. Pairing the racquet with your phone is very easy, it takes two buttons.

    I went out to drills at my local tennis center. Unfortunately, I was only on court for about 15 minutes before lightning shut us down. But, that was still plenty of time to show off the app.

    As for the racquet itself, it's a Pure Drive and feels like one. But that's not what this racquet is all about.

    Here's the overall stats for the time I was on court:

    [​IMG]

    You can then take a look at the breakdown of your strokes:

    [​IMG]

    One thing about those results, volleys are included with your regular forehands and backhands. Hopefully there will eventually be a way to split those out. (Sorry for this pic, wanted to stay under the four image limit.)

    And then you can see where on the string bed you're hitting the ball:

    [​IMG]
    [​IMG]


    Well, I can instantly see what I need to work on with my backhand!

    So, that's just a real quick look at it. Regardless of what you think about Babolat, this is some game changing technology and I can't wait to get out and play with it more.
     
    #1
  2. Torres

    Torres Banned

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    What does the Power % mean? % relative to what?
     
    #2
  3. pug

    pug Semi-Pro

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    That is really cool, thanks for sharing.
     
    #3
  4. LanEvo

    LanEvo Hall of Fame

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    Is everything accurate with the racquet as far as the data going? (Like the number of bh/fh/longest rally, etc)
     
    #4
  5. LanEvo

    LanEvo Hall of Fame

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    Also OP where do you live? State-wise is fine, trying to see when I should be getting mine, I am in CA, and it is shipping from CO, so possibly tomorrow I may receive mine hopefully.
     
    #5
  6. stopthewave

    stopthewave New User

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    I believe it's compared to a world class player, so something like a Nadal forehand would be 100%.
     
    #6
  7. stopthewave

    stopthewave New User

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    As far as I can tell. I wasn't exactly counting my shots but we were doig three across then base line, approach, volley, so the 3 shot rally is right on.

    And I'm in TX. If you go to UPS's website there's a transit time map where you can enter your zip code and should be able to see how long it would take.
     
    #7
  8. JDMasFCK

    JDMasFCK Semi-Pro

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    If it's shipping from CO, and you live in CA, you should receive by the end of the day tomorrow.
     
    #8
  9. SFrazeur

    SFrazeur Legend

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    Delete .
     
    Last edited: Nov 22, 2013
    #9
  10. WhyNotLetItFly

    WhyNotLetItFly New User

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    Looks like someone got featured on the facebook page!
     
    #10
  11. palmerop

    palmerop Rookie

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    #11
  12. degrease

    degrease Rookie

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    Waiting for the aeropro drive version
     
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  13. palmerop

    palmerop Rookie

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    Great paint job btw
     
    #13
  14. palmerop

    palmerop Rookie

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    I think it does a pretty accurate job...

    [​IMG]

    Here is my pulse...
     
    #14
  15. anubis

    anubis Hall of Fame

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    I'm a play tester as well, can't wait to start playing. I just need to find the time, and join a tennis club here. Too cold to play outside now.
     
    #15
  16. arche3

    arche3 Banned

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    Now we can put a computer analysis to ttw players via this racket.
    So when you say you serve 130 you need to post a screen grab of the sensor info. Brilliant.
     
    #16
  17. anubis

    anubis Hall of Fame

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    I don't mind sharing, once I get data from it. I claim that all my serves are 45 mph, my forehands have 500 rpms of spin, and travel at 30 mph. Whatever power level it reports, mine is the lowest :)
     
    #17
  18. mlocke1322

    mlocke1322 Rookie

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    Enjoyed my first session with it last week and found it to be pretty accurate. Downside was the software bugs I encountered. I have now lost all of my data from my hitting session that was logged. It kept the overall data in the SKILLS section but lost all of the specific data in the ANALYZE section. They have been pretty responsive so far and I will see how it handles my session later today. Hope they can get all these bugs sorted out on what seems like a pretty tight time frame before launch.
     
    #18
  19. julian

    julian Hall of Fame

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    I apologize

    Hi,
    I apologize for asking.
    Did you get an answer for your question?
     
    #19
  20. palmerop

    palmerop Rookie

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    In the Babolat official thread...
     
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  21. mad dog1

    mad dog1 Hall of Fame

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    like you, i've also uncovered some software bugs. i've documented the bugs in the Babolat official thread.

    my latest discovery...since the application stopped working after the download of my 2nd hitting session, the Babolat Play app has been hanging up when i launch the app and select ANALYZE. i've rebooted my iPhone5 and it still doesn't fix the issue so i decided to try reinstalling the iPhone app. bad idea. i deleted it and when i went back to the install email to reinstall the app, i discovered that the iPhone 1.0.64 build for iOS is no longer available. so, i no longer have Babolat Play on my iPhone. i can't use the Pure Drive Play racquet with my Samsung Galaxy S3 either because I am unable to pair the racquet to the phone.

    i have a feeling the software programmers are going to be working overtime.
     
    #21
  22. LanEvo

    LanEvo Hall of Fame

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    Download it online for your computer, in your Welcome to Babolat Playtest email, there is a link to download and use it for your computer.
     
    #22
  23. rosewall4ever

    rosewall4ever Semi-Pro

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    in accurate results..

    That is a major flaw,especially if ones playing doubles. How can you know percentages for which area of your game you need to work on if you cant tell a gs from a volley

    For the asking price i'd better wait for beta version til that is fixed up...
     
    #23
  24. rosewall4ever

    rosewall4ever Semi-Pro

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    so if nadal playtested it(which he did), then it would be relative to???
     
    #24
  25. mad dog1

    mad dog1 Hall of Fame

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    i have mentioned in my prior posts that i am trying this on the following devices:

    1. computer (win OS)
    2. iPhone5 (iOS)
    3. Samsung Galaxy S3 (Android OS)

    appreciate your attempt to help, but you are aware that as beta testers, one of the things we should be doing is finding all the problems and reporting them so the development team can fix before the official launch.
     
    Last edited: Nov 25, 2013
    #25
  26. mlocke1322

    mlocke1322 Rookie

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    I am now unable to sync on any of my devices today:

    iPad: I tried to save my first session from today and it just stays on the "Saving Session" icon forever. It also consistently says synchronizing at the top whether I have bluetooth on or not. I have another session from tonight that I can;t do anything with.

    PC: Won;t even recognize the racquet when I plug it in now. I plug it in and try to open the program. It says there is no disk inserted and won;t go any further.

    They seem really close to launch to have all of these major bugs to fix still. If I was buying, I wouldn't buy one at launch.
     
    #26
  27. mad dog1

    mad dog1 Hall of Fame

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    this is exactly what happens on my iPhone so i've been trying to use my PC and no subsequent sessions are updating and showing up.

    as far as the bugs are concerned, we are beta testers and this is exactly why Babolat has sent us the racquets to try - so we can find and report as many bugs as possible before the official launch. like most new software i've bought, even after the official release, there are still bugs that are then addressed in future patches.
     
    #27
  28. stopthewave

    stopthewave New User

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    Those are you that are having problems, are you sending emails to babolatplayATbabolatDOTcom? That's how we're to report bugs, so make sure you're doing that. And as beta testers we can't expect it to work every time right now.
     
    #28
  29. mlocke1322

    mlocke1322 Rookie

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    Obviously I understand that and I am in constant contact with them. I've beta tested several types of systems and they all had launch windows significantly further out than this one. I expect there to continuing being small items addressed through patches. I am just hoping they gave themselves enough time to address the major compatibility issues.
     
    #29
  30. TimeSpiral

    TimeSpiral Professional

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    My local pro shop has one and they showed it to me. It looks awesome. I'm just concerned that it might be a little cost-prohibitive at first.
     
    #30
  31. JackB1

    JackB1 G.O.A.T.

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    Can someone explain to me how this device inside the handle, can tell WHERE on the stringbed you are hitting the ball?
     
    #31
  32. mad dog1

    mad dog1 Hall of Fame

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    yep, i've been sending emails directly to babolat. i've just been posting in the official babolat thread as well as this thread so all the beta testers can see the issues in case they are having the same ones.
     
    #32
  33. dgoran

    dgoran Hall of Fame

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    We should probably stick to either or this or officials thread to avoid confusion and double posting
     
    #33
  34. dgoran

    dgoran Hall of Fame

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    I just discovered bug where racquet records bounces off the floor... something I always do before serving or before pretty much any point... that will kill my averages since longest rally recorded is 3 and quess what that's how many times on average I bounce the ball off the floor. If that starts averaging with you normal rally say 10 shots than rally avg will be artificially lowered
     
    #34
  35. mad dog1

    mad dog1 Hall of Fame

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    actually, based on the original email i received from TW, i thought they were going to start an official Beta Playtest thread as a sticky.
     
    #35
  36. dgoran

    dgoran Hall of Fame

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    I see......
     
    #36
  37. YesTennis

    YesTennis Semi-Pro

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    Quick Question. Just went to save my first session on the app. The "saving session" is taking forever. How long does it normally take? Should I just try again? Thanks
     
    #37
  38. palmerop

    palmerop Rookie

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    Last edited: Dec 4, 2013
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  39. JackB1

    JackB1 G.O.A.T.

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    ^^^^^

    Anyone?
     
    #39
  40. palmerop

    palmerop Rookie

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    My guess is that it just senses acceleration, changes in speed. There are a 3d accelerometer and a 3d gyro in there, and maybe a 3d compass. When you hit a ball outside the sweetspot on one side of the stringbed, your racquet twists a bit on impact and this is what the racquet senses. It will then interpret this as an off center hit. Whether you hit high or low on the stringbed can also be inferred likewise.
     
    #40
  41. TimeSpiral

    TimeSpiral Professional

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    There are multiple sensors in the handle device, as I understand it. When the ball strikes the string bed it sends different vibration frequencies through the frame and into the handle. These frequency profiles are then parsed to determine where the ball hit the strings.
     
    #41
  42. JackB1

    JackB1 G.O.A.T.

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    that sounds pretty inexact. How can it tell if you miss a little right or a little left?
     
    #42
  43. TimeSpiral

    TimeSpiral Professional

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    Please keep in mind, I'm speculating here.
     
    #43
  44. loubapache

    loubapache Professional

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    Not knowing how Babolat measured the impact location but the racket vibration frequency is pretty much the same no matter where the ball impact point is (except one point). What is different is the vibration amplitude (how much the racket vibrates in terms of distance movement, which is very small).

    See TWU findings:

    http://twu.tennis-warehouse.com/learning_center/vibration_explanation.php
     
    #44
  45. palmerop

    palmerop Rookie

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    The company they contracted developed the Wii's controller? I am guessing they are using just gyros and accelerometers to estimate where you hit...
     
    #45
  46. loubapache

    loubapache Professional

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    I think that is the key word.
     
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  47. palmerop

    palmerop Rookie

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    BTW, the accelerometer/gyro hypothesis fits with the fact that the racquet tells me I hit high on the stringbed. I hold the racquet at the very bottom of the grip and that might be the cause of this... only if it uses acceleration to estimate the point of contact.
     
    #47
  48. TimeSpiral

    TimeSpiral Professional

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    The accelerometers are likely not used in determine position on the string bed. Perhaps it's calculating the change in racquet face angle. A ball struck at the top of the strings will open the face slightly, and vice versa for the ball hit at the bottom.
     
    #48
  49. TimothyO

    TimothyO Hall of Fame

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    The company with whom they contracted did indeed build the Wii controller and there are two sensors: a gyro and an accelerometer.

    This means that all data presented to the user is inferred from acceleration and attitude data detected by these two sensors. This is why it can't tell the type of stroke being attempted. It can measure changes in the frame's speed and attitude but it has no idea how the changes are being made by your handling of the frame.

    Changes in the software can help, especially in the area of interpreting the time between sensor inputs. In developing the software they probably videoed players using the frame and then, using time stamps on the data and video, built a reference library of stroke profiles so the system could correlate strokes as we know them to the data profiles. It's sort of like translating between two languages. When the data is X/Y and the video showed stroke A and resulting Shot M, we have a correlation. But sometimes that same data X/Y might result from stroke B and the resulting Shot arc/speed/spin could be M or N. Thus the system's limits.

    It's an interesting novelty but I wouldn't put much faith in the interpolated data for training purposes or to change tactics and techniques. As noted by one Babolat official in an interview it's just their first attempt and really a test bed.
     
    Last edited: Dec 5, 2013
    #49
  50. TimothyO

    TimothyO Hall of Fame

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    It's all about level of granularity and reference points. As the hardware improves and the software's underlying database grows they'll be able to make those interpolations more accurately.
     
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