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| -rw-r--r-- | readme.md | 9 |
1 files changed, 5 insertions, 4 deletions
@@ -13,13 +13,14 @@ Compile the project using wp85: ``make wp85`` ## Setting Variables -To change the sensitivity of the application you must edit the `motionMonitor/motionMonitor.c` file. +To change the sensitivity of impact detection you must edit the `motionMonitor/motionMonitor.c` file. The Accelerometer measures acceleration in 3 dimensions, X, Y, and Z. These dimensions of acceleration are recorded and the magnitude of their resulting vector is calculated using ``double impactMagnitude = sqrt(x * x + y * y + z * z);`` + + + + `#define DEFAULT_THRESHOLD_MS2 17` determines the magnitude of the resulting vector that will trigger the application to detect a sudden impact. If adjusting the value of `DEFAUTL_THRESHOLD_MS2` keep in mind that gravity implies a motionless magnitude of -9.8m/s^2 As visualized with the red vector here. - - - |