Hi, Thanks for your inquiry. Please see  the attached BMP280 handling, soldering and mounting instructions. On page 14 you will see that BMP280 is sensitive to light. Please design your casing properly so that BMP280 vent hole is not directly facing the ambient light. In that document you will also find other outer parameters that have an impact on the sensor such as mechanical stress from mounting screws, heat from other components nearby and other Epoxy conformal coating material, etc. Thanks. ... View more

Hi, Thanks for your inquiry. We don't recommend to use linear acceleration to obtain distance by double integration, because little noise in linear accelerations will accumulate to large distance error at distance = 0.5 * a * t^2. For example, if the linear acceleration 'a' has 1mg noise which is 1 * 0.001 * 9.81m/s^2 = 0.00981m/s^2. At 100 seconds of time, the distance error = 0.5 * 0.00981 * 100^2 = 49m. Additional filtering after BNO055 linear acceleration output will reduce the noise, but this will have delay for the motion. It is a trade-off. In order to avoid distance increasing when the object is at rest, you may set a dead-zone for linear acceleration output of BNO055. For example, when abs(a) < 3mg, then a = 0. BNO055 9DoF sensor fusion can output Euler angles (pitch/roll/heading) at 100Hz. You can use this data to do screen rotation. Thanks. ... View more