Talk:Gta02-core

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Revision as of 19:53, 19 May 2009 by Werner (Talk | contribs)

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Only one accelerometer

RuiSeabra: Do not remove one of the accelerators, having two vectors is useful for many applications.

daveb: I've heard lots of contradictory information about this, but I'm certainly not an accelerometer expert. My understanding is that as accelerometers detect lateral movement, but not rotation through their axis, the second accelerometer is intended to detect movement in one accelerometer when the device is rotated through the axis of the other. However, if the devices are too close together, it's difficult to get a useful reading? At the moment, are there freerunner applications which require two accelerometers? (does omnewrotate use both?) My understanding from the lists is that connecting both interrupts to one accelerometer will offer more benefits than sticking with two accelerometers.

Werner: when I asked whether anyone actually had an existing use case for two accelerometers, I got no replies. So it seems that having just one is good enough for real life.

No change to case design

daveb: For gta02-core, we're planning to build something that will fit inside the GTA02 case. A new Id involves lots of complexity and cost - designing the case, manufacturing molds, properly understanding the EMI properties of the new case, and designing the aerials that need to fit in it.

Werner: people interesting in experimenting with case (re)design are entirely welcome to. It's just out of scope for gta02-core. I'll post some ideas to the gta03 list.

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Only one accelerometer

RuiSeabra: Do not remove one of the accelerators, having two vectors is useful for many applications.

daveb: I've heard lots of contradictory information about this, but I'm certainly not an accelerometer expert. My understanding is that as accelerometers detect lateral movement, but not rotation through their axis, the second accelerometer is intended to detect movement in one accelerometer when the device is rotated through the axis of the other. However, if the devices are too close together, it's difficult to get a useful reading? At the moment, are there freerunner applications which require two accelerometers? (does omnewrotate use both?) My understanding from the lists is that connecting both interrupts to one accelerometer will offer more benefits than sticking with two accelerometers.

Werner: when I asked whether anyone actually had an existing use case for two accelerometers, I got no replies. So it seems that having just one is good enough for real life.

No change to case design

daveb: For gta02-core, we're planning to build something that will fit inside the GTA02 case. A new Id involves lots of complexity and cost - designing the case, manufacturing molds, properly understanding the EMI properties of the new case, and designing the aerials that need to fit in it.

Werner: people interesting in experimenting with case (re)design are entirely welcome to. It's just out of scope for gta02-core. I'll post some ideas to the gta03 list.