From =?UTF-8?Q?Bengt_T=C3=B6rnqvist?=@21:1/5 to All on Fri Dec 31 01:43:18 2021
My project is to decide coordinates for positions in a building.
GPS can not be used and an other alternative could be to use a battery operated Arduino with ADXL345 based shield, and to "double integrate" the result.
Is this realistic and which accuracy can be expected?