Comments on: Obstacle interference test

By: State of the Antenna Analysis « Hand Hygiene

State of the Antenna Analysis « Hand Hygiene — Thu, 22 Oct 2009 22:07:18 +0000

[...] various regions of the RSSI, such as providing greater separation between distances or orientations.Obstacle Interferance (inside puck) – one horizontal, one vertical, distance .55m. various obstacles: person, [...]

By: E M

E M — Thu, 27 Aug 2009 18:28:42 +0000

yes. also the standard deviation of the readings goes way up when the roomba was introduced in between the two motes, meaning that any single rssi reading with a computer-like object in the middle will be less accurate.

By: gthomas

gthomas — Wed, 26 Aug 2009 23:46:37 +0000

Good experiment. So what it says, if I’m interpreting your data correctly, is that standing between two motes doesn’t seem to affect them very much. However, holding a large metal object, like a laptop (which is about the size of a Roomba), probably drops the signal down by 10-15%.