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Ideas
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get hologram nova working with raspberry pi
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front-end needs api (a way of interacting) for the the hologram nova
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before moving onto to getting the short range function working on the tracker, we need to run tests to see how accurate cellular is indoors.
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can we store the last cellular location of the tracker and compare this with the current cellular location of the tracker , (at a certain distance away) thereby eliminating the need for Bluetooth ? (really unique if it works)
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simple subtraction is all that would be needed [old location - new location = distance apart]
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if it turns out cellular is more accurate (more users use the 4G band rather than 3G band we are using) than we can solely use that (max battery life - even smaller size in manufacturing & less cost)
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i looked into Bluetooth (BLE) proximity detection with mobile phones to raspberry pi, we don't want the user to have Bluetooth on all the time (that will cost a lot of battery life both for the tracker and the mobile phone) and pairing both the tracker and the mobile phone makes our product frustrating for users- pairing is not a good idea.
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for some reason Bluetooth is actually harder to implement with mobile phones (seems easier in concept) , it probably explains why so many Bluetooth products that work with phones have problems
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we want the tracker to do the hard work of tracking, the user does not want their power drained (we can't have the user constantly scanning for the tracker )
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why cellular is the right track and more advanced than might seem