Acceleration Log

Posted on
  • There is an app on this watch that allows us to record acceleration over time. The time is in milliseconds. What is the unit for the acceleration?

  • This app?

    In the data, 1g = 8192 (which is the accuracy of the actual accelerometer chip)

    Actually it probably makes sense for me to modify the downloader app to rescale everything into g?

  • If it's going to rescale anyway, maybe use m/s²?

  • What is g?

  • g is the constant for standard acceleration due to gravity: 9.8 m/s².
    This pops up a lot in accelerometers, because a sensor at rest measures 1g in the vertical direction.

  • @Gordon at the moment I think accelog only records the X,Y,X values but not the magnitude SQRT(X*X + Y*Y + Z*Z). Having the g value is useful, but also agree m/s/s would be useful as well.

  • We could definitely make the 'interface' file report the magnitude values as well. I guess maybe some kind of drop-down for selecting units?

  • So, the unit is in g?

  • Right now the value is 1 / 8192 g

    So if you get a value of 8192, that means 1g, or 9.8 m/s2

  • ohhhh. Thanks!

  • Im working on a new function. I'll let you all know when it is done!

  • Post a reply
    • Bold
    • Italics
    • Link
    • Image
    • List
    • Quote
    • code
    • Preview

Acceleration Log

Posted by Avatar for LeebWeeb @LeebWeeb