6 ms·

Kudos to you guys for trying to solve the VVS problem! For your second experiment, may I recommend attaching the iphone to the disc of a variable-speed angle gr

Kudos to you guys for trying to solve the VVS problem! For your second experiment, may I recommend attaching the iphone to the disc of a variable-speed angle grinder? You'll get a much larger range of speeds, as well as the ability to aim the camera freely. You'll be able to test how your accelerometer algos handle pitch and yaw IN ADDITION to centrifugal force!

petrakeas 12y ago
Developer of the app here. One step ahead of you ;) http://imgur.com/tdnympM http://imgur.com/tdnympM
- askura 12y ago
  I can't wait to see what that's going to look like. Just be careful it doesn't fly off and injure you!
- deleted 12y ago
  [deleted]
- jacquesm 12y ago
  I hope you're joking. If you do plan on doing this then please do it in a suitably strong wire cage, power it on remotely, make sure it is tied down very solidly and make sure nothing you care about (including you, significant others, co-workers, children, pets, possessions etc) is in the plane of rotation because this will fail spectacularly. Keep in mind that if the grinder becomes dislodged or unbalanced that the plane of rotation may vary rapidly. Too rapid to get out of the way. The iphone will desintegrate due to the forces involved and the shrapnel will cause serious injury. Please do not do this unless you really know what you're messing with (and if you do then you won't). On second thought, simply please do not do this. Spinning an iPhone up to 10K rpm or higher is a very bad idea, the label reads 11K rpm max, 850W, those things don't usually have soft-start so it'll just fire up and start throwing things. Appeal to authority fallacy comes free of charge: I've had a pretty serious metal workshop and have seen several interesting interactions between angle-grinders and various objects in otherwise controlled circumstances, it is astounding how fast things can go wrong. Just having a grinder disc shatter on you can take you completely by surprise even if you know the danger, this is far more dangerous, it is Darwin award material.
  - larrys 12y ago
    Really great points. I think that when working around power tools it is sometimes forgotten how careful you have to be. Everyone innately knows certain things like "don't stick fingers in light socket" but other things aren't immediately obvious. Perhaps because you are juxtaposing something like an iphone and maybe are focused on the worse case scenario as being a destroyed iphone (in other words the money issue) instead of the iphone flying off into someones face. I was watching an episode of "Property Brothers" (a typical renovate a house HGTV type show) and was amazed that they were having the owners participate in demolition without using practically any protective gear (while using crowbars and sledgehammers etc.)
    - iancarroll 12y ago
      > I was watching an episode of "Property Brothers" I bet this was just for show.
    - sliverstorm 12y ago
      Crowbars & sledgehammers aren't power tools. It seems much more reasonable to use those without significant PPE.
      - jacquesm 12y ago
        Hah. Wait until you get a nice long steel nail that jumps away on you from the crowbar just as it exits the wood and embeds itself 2" deep in another piece of wood. if you're lucky. Or when a sledge hits a really hard pebble just off the side of a solid wall and it gets catapulted out. Sledges, crowbars and pickaxes are really dangerous tools and especially if you should wear goggles at a minimum, and probably a helmet too. And, no, I'm not from the cradle to the grave coddling department.
        larrys 12y ago
        Yeah I really don't understand the parent making that comment either. As if it's so much work to have some safety gear on. From busting apart shipping crates as a kid I also realized that in addition to the goggles and helmet you also need boots that can take stepping on a stray nail as well. Not sneakers, definitely not sneakers.
- columbo 12y ago
  A box fan might be a safer alternative. It'd give you the ability to move it around but not the high rpm of a angle grinder.
  - DanBC 12y ago
    I want the next "Will It Blend?" to be these people attaching iPhones to a variety of terribly dangerois machinery at high speed. Grinders, chainsaws, motorbike wheels. Or maybe some safer things too - place it on a record on a turntable and film the face of the DJ doing some mixing?
    - alxndr 12y ago
      I want the next "Will It Blend?" to actually answer the stated question — "can this iPhone be used to make a smoothie?" — rather than "can it be blendED?". Seems like strapping an iPhone to an angle grinder is getting close to answering the stated question...
      - tempestn 12y ago
        What you're describing is the original "Will It Blend": https://www.youtube.com/watch?v=qg1ckCkm8YI&feature=kp https://www.youtube.com/watch?v=qg1ckCkm8YI&feature=kp
        alxndr 12y ago
        No, I mean "can this iPhone be used to make a smoothie", not "can a blender turn this iPhone into an iPhone smoothie". Take a blender, remove the blades, put iPhones on the spindle where the blades were. Now fire up the blender and throw in some fruits. Will iPhones spinning at $whatever RPMs be able to turn your fruits and wheat grass into a delicious smoothie? The original is actually "Will It Be Blended [by this blender]". I want to know "Will It Make a Suitable Replacement for a Blender".
        tempestn 12y ago
- deleted 12y ago
  [deleted]
- btbuildem 12y ago
  Jesus Christ man I was kidding.. don't actually do it. Whatever you attach the phone with probably won't hold, and the phone will turn into a projectile traveling at high speed in a random direction. And if the phone does NOT come off, then you've got your hands on an unbalanced angle grinder going full tilt. Bad news bears all around.
userbinator 12y ago
Safety issues aside (as has been well-discussed by others already), the accelerometer won't report more than ~8G. Going any higher than that (which is not hard to do even with a moderately slow rotation) won't be very useful for testing out your app.

petrakeas 12y ago

Developer of the app here. One step ahead of you ;) http://imgur.com/tdnympM http://imgur.com/tdnympM

askura 12y ago
I can't wait to see what that's going to look like. Just be careful it doesn't fly off and injure you!
deleted 12y ago
[deleted]
jacquesm 12y ago
I hope you're joking. If you do plan on doing this then please do it in a suitably strong wire cage, power it on remotely, make sure it is tied down very solidly and make sure nothing you care about (including you, significant others, co-workers, children, pets, possessions etc) is in the plane of rotation because this will fail spectacularly. Keep in mind that if the grinder becomes dislodged or unbalanced that the plane of rotation may vary rapidly. Too rapid to get out of the way. The iphone will desintegrate due to the forces involved and the shrapnel will cause serious injury. Please do not do this unless you really know what you're messing with (and if you do then you won't). On second thought, simply please do not do this. Spinning an iPhone up to 10K rpm or higher is a very bad idea, the label reads 11K rpm max, 850W, those things don't usually have soft-start so it'll just fire up and start throwing things. Appeal to authority fallacy comes free of charge: I've had a pretty serious metal workshop and have seen several interesting interactions between angle-grinders and various objects in otherwise controlled circumstances, it is astounding how fast things can go wrong. Just having a grinder disc shatter on you can take you completely by surprise even if you know the danger, this is far more dangerous, it is Darwin award material.
- larrys 12y ago
  Really great points. I think that when working around power tools it is sometimes forgotten how careful you have to be. Everyone innately knows certain things like "don't stick fingers in light socket" but other things aren't immediately obvious. Perhaps because you are juxtaposing something like an iphone and maybe are focused on the worse case scenario as being a destroyed iphone (in other words the money issue) instead of the iphone flying off into someones face. I was watching an episode of "Property Brothers" (a typical renovate a house HGTV type show) and was amazed that they were having the owners participate in demolition without using practically any protective gear (while using crowbars and sledgehammers etc.)
  - iancarroll 12y ago
    > I was watching an episode of "Property Brothers" I bet this was just for show.
  - sliverstorm 12y ago
    Crowbars & sledgehammers aren't power tools. It seems much more reasonable to use those without significant PPE.
    - jacquesm 12y ago
      Hah. Wait until you get a nice long steel nail that jumps away on you from the crowbar just as it exits the wood and embeds itself 2" deep in another piece of wood. if you're lucky. Or when a sledge hits a really hard pebble just off the side of a solid wall and it gets catapulted out. Sledges, crowbars and pickaxes are really dangerous tools and especially if you should wear goggles at a minimum, and probably a helmet too. And, no, I'm not from the cradle to the grave coddling department.
      - larrys 12y ago
        Yeah I really don't understand the parent making that comment either. As if it's so much work to have some safety gear on. From busting apart shipping crates as a kid I also realized that in addition to the goggles and helmet you also need boots that can take stepping on a stray nail as well. Not sneakers, definitely not sneakers.
columbo 12y ago
A box fan might be a safer alternative. It'd give you the ability to move it around but not the high rpm of a angle grinder.
- DanBC 12y ago
  I want the next "Will It Blend?" to be these people attaching iPhones to a variety of terribly dangerois machinery at high speed. Grinders, chainsaws, motorbike wheels. Or maybe some safer things too - place it on a record on a turntable and film the face of the DJ doing some mixing?
  - alxndr 12y ago
    I want the next "Will It Blend?" to actually answer the stated question — "can this iPhone be used to make a smoothie?" — rather than "can it be blendED?". Seems like strapping an iPhone to an angle grinder is getting close to answering the stated question...
    - tempestn 12y ago
      What you're describing is the original "Will It Blend": https://www.youtube.com/watch?v=qg1ckCkm8YI&feature=kp https://www.youtube.com/watch?v=qg1ckCkm8YI&feature=kp
      - alxndr 12y ago
        No, I mean "can this iPhone be used to make a smoothie", not "can a blender turn this iPhone into an iPhone smoothie". Take a blender, remove the blades, put iPhones on the spindle where the blades were. Now fire up the blender and throw in some fruits. Will iPhones spinning at $whatever RPMs be able to turn your fruits and wheat grass into a delicious smoothie? The original is actually "Will It Be Blended [by this blender]". I want to know "Will It Make a Suitable Replacement for a Blender".
        tempestn 12y ago
deleted 12y ago
[deleted]
btbuildem 12y ago
Jesus Christ man I was kidding.. don't actually do it. Whatever you attach the phone with probably won't hold, and the phone will turn into a projectile traveling at high speed in a random direction. And if the phone does NOT come off, then you've got your hands on an unbalanced angle grinder going full tilt. Bad news bears all around.

userbinator 12y ago

Safety issues aside (as has been well-discussed by others already), the accelerometer won't report more than ~8G. Going any higher than that (which is not hard to do even with a moderately slow rotation) won't be very useful for testing out your app.