Other Parts Discussed in Thread: CC2541
I am working on a project in which i am using a CC2541 sensor tag. I have downloaded the sensor tag app on my i-phone(4S). I have made no changes in the sensor tag. I just bought it and is using it as it is with my i-phone. I have attached the obtained readings of the accelerometer sensor below. Can anyone please tell me that by observing these readings how can I obtain my sampling frequency? I need a sampling frequency to design a filter to remove noise from the data obtained. How this sampling frequency can be decided and are the readings obtained below correct?
| 2014-07-16 20:29 | 0 | 0 | 0 | 8:29:38 PM |
| 2014-07-16 20:29 | -0.2 | 1.3 | -0.3 | 8:29:42 PM |
| 2014-07-16 20:29 | -0.3 | 2.7 | -0.5 | 8:29:42 PM |
| 2014-07-16 20:29 | -0.5 | 4 | -0.8 | 8:29:43 PM |
| 2014-07-16 20:29 | -0.4 | 4.1 | -0.8 | 8:29:43 PM |
| 2014-07-16 20:29 | -0.4 | 4.1 | -0.8 | 8:29:43 PM |
| 2014-07-16 20:29 | -0.4 | 4.1 | -0.8 | 8:29:43 PM |
| 2014-07-16 20:29 | -0.4 | 4 | -0.8 | 8:29:44 PM |
| 2014-07-16 20:29 | -0.4 | 4 | -0.8 | 8:29:44 PM |
| 2014-07-16 20:29 | -0.5 | 4.1 | -0.7 | 8:29:44 PM |
| 2014-07-16 20:29 | -0.5 | 4.1 | -0.7 | 8:29:45 PM |
| 2014-07-16 20:29 | -0.4 | 4.1 | -1 | 8:29:45 PM |
| 2014-07-16 20:29 | -0.8 | 4.4 | -1.1 | 8:29:45 PM |
| 2014-07-16 20:29 | -0.7 | 4.2 | -1 | 8:29:46 PM |
| 2014-07-16 20:29 | -0.9 | 4.1 | -0.6 | 8:29:46 PM |
| 2014-07-16 20:29 | -0.8 | 3.8 | -0.5 | 8:29:46 PM |
| 2014-07-16 20:29 | -0.9 | 4.1 | -0.9 | 8:29:46 PM |
| 2014-07-16 20:29 | -1.4 | 4.2 | -1.1 | 8:29:47 PM |
| 2014-07-16 20:29 | -1 | 4.4 | -1 | 8:29:47 PM |
| 2014-07-16 20:29 | -1.4 | 4.4 | -0.5 | 8:29:47 PM |
| 2014-07-16 20:29 | -0.7 | 4.2 | -0.2 | 8:29:48 PM |
| 2014-07-16 20:29 | -1.4 | 3.8 | -1.4 | 8:29:48 PM |
| 2014-07-16 20:29 | -1.4 | 3.5 | -1.7 | 8:29:48 PM |
| 2014-07-16 20:29 | -1.7 | 3.4 | -2 | 8:29:49 PM |
| 2014-07-16 20:29 | -1.7 | 3.6 | -1 | 8:29:49 PM |
| 2014-07-16 20:29 | -1.5 | 3.7 | -0.6 | 8:29:49 PM |
| 2014-07-16 20:29 | -1.2 | 3.9 | -1.3 | 8:29:49 PM |
| 2014-07-16 20:29 | -1.1 | 3.6 | -1.4 | 8:29:50 PM |
| 2014-07-16 20:29 | -0.9 | 3.5 | -2 | 8:29:50 PM |
| 2014-07-16 20:29 | -1.4 | 3.2 | -1.1 | 8:29:50 PM |
| 2014-07-16 20:29 | -1.1 | 3.6 | -0.8 | 8:29:51 PM |
| 2014-07-16 20:29 | -1.2 | 4 | -1.3 | 8:29:51 PM |
| 2014-07-16 20:29 | -1.3 | 3.6 | -0.5 | 8:29:51 PM |
| 2014-07-16 20:29 | -0.1 | 3.3 | -0.6 | 8:29:52 PM |
| 2014-07-16 20:29 | -0.1 | 3.1 | 0.6 | 8:29:52 PM |
| 2014-07-16 20:29 | 0.5 | 3.9 | -1.9 | 8:29:52 PM |
| 2014-07-16 20:29 | -2 | 3.8 | -2.2 | 8:29:52 PM |
| 2014-07-16 20:29 | -2 | 3.6 | -2.7 | 8:29:53 PM |
| 2014-07-16 20:29 | -2 | 3.6 | -1.1 | 8:29:53 PM |
| 2014-07-16 20:29 | -0.7 | 3.9 | -0.6 | 8:29:53 PM |
| 2014-07-16 20:29 | -0.6 | 4.2 | -1.4 | 8:29:54 PM |
| 2014-07-16 20:29 | -1 | 3.6 | -0.4 | 8:29:54 PM |
| 2014-07-16 20:29 | -0.3 | 3.1 | -0.7 | 8:29:54 PM |
| 2014-07-16 20:29 | -0.8 | 2.9 | 0.1 | 8:29:55 PM |
| 2014-07-16 20:29 | 0 | 3.5 | -0.9 | 8:29:55 PM |
| 2014-07-16 20:29 | -1.4 | 4.1 | -1.3 | 8:29:55 PM |
| 2014-07-16 20:29 | -0.8 | 4 | -1.1 | 8:29:55 PM |
| 2014-07-16 20:29 | -1.1 | 4.5 | -0.7 | 8:29:56 PM |
| 2014-07-16 20:29 | -0.5 | 4.3 | -0.1 | 8:29:56 PM |
| 2014-07-16 20:29 | -0.6 | 4.6 | -1.1 | 8:29:56 PM |
| 2014-07-16 20:29 | -1.2 | 3.3 | -0.7 | 8:29:57 PM |
| 2014-07-16 20:29 | -0.6 | 3.2 | -0.8 | 8:29:57 PM |
| 2014-07-16 20:29 | -1 | 3.2 | -0.1 | 8:29:57 PM |
| 2014-07-16 20:29 | -0.3 | 4.2 | -1.7 | 8:29:58 PM |
| 2014-07-16 20:29 | -1.6 | 4.3 | -2 | 8:29:58 PM |
| 2014-07-16 20:29 | -1.4 | 4 | -2.3 | 8:29:58 PM |
| 2014-07-16 20:29 | -1.8 | 3.2 | -1.4 | 8:29:58 PM |
| 2014-07-16 20:29 | -1.1 | 3.2 | -1.2 | 8:29:59 PM |
| 2014-07-16 20:29 | -0.4 | 3.9 | -1.6 | 8:29:59 PM |
| 2014-07-16 20:29 | -0.4 | 3.8 | -1.6 | 8:29:59 PM |
| 2014-07-16 20:30 | -0.1 | 3.8 | -1.4 | 8:30:00 PM |
| 2014-07-16 20:30 | -0.8 | 3.3 | -0.1 | 8:30:00 PM |
| 2014-07-16 20:30 | -0.1 | 4.5 | -0.8 | 8:30:00 PM |
| 2014-07-16 20:30 | -0.6 | 3.7 | -0.8 | 8:30:01 PM |
| 2014-07-16 20:30 | -0.4 | 3.4 | -1.2 | 8:30:01 PM |
| 2014-07-16 20:30 | -0.5 | 2.9 | -0.1 | 8:30:01 PM |
| 2014-07-16 20:30 | -0.1 | 3.7 | -1.1 | 8:30:01 PM |
| 2014-07-16 20:30 | -0.8 | 3.2 | -0.4 | 8:30:02 PM |
| 2014-07-16 20:30 | -1.3 | 3.4 | -0.9 | 8:30:02 PM |
| 2014-07-16 20:30 | -1.6 | 3.5 | 0.2 | 8:30:02 PM |
| 2014-07-16 20:30 | -1.2 | 4.3 | -0.5 | 8:30:03 PM |
| 2014-07-16 20:30 | -0.8 | 4.2 | -0.4 | 8:30:03 PM |
| 2014-07-16 20:30 | -0.5 | 4.1 | -0.6 | 8:30:03 PM |
| 2014-07-16 20:30 | -0.4 | 4.1 | -0.7 | 8:30:04 PM |
| 2014-07-16 20:30 | -0.4 | 4.1 | -0.7 | 8:30:04 PM |
| 2014-07-16 20:30 | -0.4 | 4.1 | -0.7 | 8:30:04 PM |
| 2014-07-16 20:30 | -0.4 | 4.1 | -0.7 | 8:30:04 PM |
| 2014-07-16 20:30 | -0.4 | 4.1 | -0.7 | 8:30:05 PM |
| 2014-07-16 20:30 | -0.4 | 4.1 | -0.7 | 8:30:05 PM |
| 2014-07-16 20:30 | -0.4 | 4 | -0.7 | 8:30:05 PM |
| 2014-07-16 20:30 | -0.5 | 4 | -0.6 | 8:30:06 PM |
| 2014-07-16 20:30 | -0.5 | 4 | -0.7 | 8:30:06 PM |
| 2014-07-16 20:30 | -0.5 | 4 | -0.7 | 8:30:06 PM |
| 2014-07-16 20:30 | -0.5 | 4 | -0.7 | 8:30:07 PM |
| 2014-07-16 20:30 | -0.5 | 4 | -0.7 | 8:30:07 PM |
| 2014-07-16 20:30 | -0.5 | 4 | -0.7 | 8:30:07 PM |
| 2014-07-16 20:30 | -0.4 | 4 | -0.7 | 8:30:07 PM |
| 2014-07-16 20:30 | -0.4 | 4 | -0.8 | 8:30:08 PM |