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From: Sha X. W. <xi...@mi...> - 2002-05-09 03:59:21
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hi, greetings from atlanta! joel i and some students are playng with our version of tg here. it seems that the data coming into oz from one of our wearable assembly is too stepped: as we rotate the sensor slowly, the data does not change smoothly with the sensor, but instead jumps at approximately 1 second intervals to successive values. i have to look more carefully at the std out from operate on the ipaq, but it could be that (1) the data stream is interrupted somewhere on the accelerometer-pic-ipaq chain, and (2) some code (in the ipaq?) is repeating fossil data (which would be wrong! -- we want sensor to push data) Q1. i recall that the data acquisition and rebroadcast code (on ipaq) was built to poll at a regular cloack rate. where is that rate set, and what was it? Q2. what could possibly affect this slow, delayed episodic response to changes in the sensor ? we put every mac on a hub disconncetd from the ambient net, so they see only one another. the only difference is that i'n using an Airport base station to send data htough it's tittanium. and Q3. what can we do to speed up the frequency? please help, any suggesions? Thanks ! xinwei xinwei |