Dynolicious
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Dynolicious
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App for the iPhone. It uses the phones accelerometer sensors to track runs, acceleration, braking, G-forces, etc etc.
Apparently in tests(do a google) it is very accurate compared with very expensive aftermarket equipment. I think it's about $12
Some screens..
App for the iPhone. It uses the phones accelerometer sensors to track runs, acceleration, braking, G-forces, etc etc.
Apparently in tests(do a google) it is very accurate compared with very expensive aftermarket equipment. I think it's about $12
Some screens..
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Accelerometer will be very accurate but only in one plane, unless there's a new kind of accelerometer I don't know about which is entirely possible. It will measure speed by acceleration - very clever stuff.
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From: Perth, Australia
Originally Posted by Boab01,Aug 12 2008, 09:54 AM
Accelerometer will be very accurate but only in one plane, unless there's a new kind of accelerometer I don't know about which is entirely possible. It will measure speed by acceleration - very clever stuff.
So you need a spirit level to find a quater mile flat peice of road, and solid suspension.
It's why the RSM uses the speedo reading and a g-sensor combined to work out the acceleration.
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From: Banbury, Oxfordshire
Originally Posted by Boab01,Aug 12 2008, 10:54 AM
Accelerometer will be very accurate but only in one plane, unless there's a new kind of accelerometer I don't know about which is entirely possible. It will measure speed by acceleration - very clever stuff.
You don't have to be clever to work out speed from acceleration.
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Originally Posted by Dembo,Aug 12 2008, 02:04 AM
It would be pretty crap if it only measured acceleration in one plane. I think it's fair to assume it works in all three.
You don't have to be clever to work out speed from acceleration.
You don't have to be clever to work out speed from acceleration.
Very, very cool piece of kit
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From: Banbury, Oxfordshire
Originally Posted by Boab01,Aug 12 2008, 11:13 AM
Yep 3 axis accelerometer. It's extremely clever and likely to be fairly accurate it's made by micro machining bits of silicon that dangle in a substrate and have movement in the one plane that it's interested in. In reality it's 3 accelerometers combined into a single instrument the size of a silicon chip.
The problem with calculating speed is that the innaccuracies would be cumulative. So it'd be pretty accurate doing 0-60 or whatever, but if you were to drive for an hour you might expect its speed reading to be a bit out. For that GPS, or just the speed sensor would likely be more accurate.
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Originally Posted by Dembo,Aug 12 2008, 02:37 AM
Amazing what we can do nowadays.
The problem with calculating speed is that the innaccuracies would be cumulative. So it'd be pretty accurate doing 0-60 or whatever, but if you were to drive for an hour you might expect its speed reading to be a bit out. For that GPS, or just the speed sensor would likely be more accurate.
The problem with calculating speed is that the innaccuracies would be cumulative. So it'd be pretty accurate doing 0-60 or whatever, but if you were to drive for an hour you might expect its speed reading to be a bit out. For that GPS, or just the speed sensor would likely be more accurate.
I passed that exams last time
