How to Monitor the Tilt?

Help & Support Robot Parts
1

I want to monitor the tilt of a robot at x-y coordiators. I want to get high precision. be aware of 1 or 2 degree changing. The reaction time is less than 1/20 second is ok.

  1. What sensors might I choose ?
  2. What is the meaning of +_6g at the senser RB-Dim-01 robotshop.com/dimension-engineering-de-accm.html
  3. Which one bewteen RB-Dim-01 and RB-Dim-05 has the higher pricision ?
2

Hi,

  1. The lower the g-rating, the more accurate the accelerometer will be (considering your application does not involve high acceleration)
  2. ±6g means that the output will be between -6g to +6g (obvious). In the case of an analog sensor, most A/D converter chips are 8 bit, 10 bit or 12 bit. If you pair it with an Arduino which has 10 bit A/D, the -6g to +6g would be split into 1024 distinct values, with 0 representing -6g, 512 representing 0g and 1024 representing 6g. The resolution would be 12/1024 = 0.01g. If you instead chose a ±3g accelerometer, the accuracy (assuming a 10 bit A/D)would be 6/1024 = 0.0059g per count.
  3. Try to figure that out based on #2 above.

Hope this helps,