Was wondering if you can help as I don’t have a spare ST multi sensor to test.
I plan to install a multi sensor on a flap configured as a garage mode (ie without a magnet). The flap position is normally vertical. When the flap is opened, it’s at most 30-45 degrees from vertical. Is it enough to register a change (acceleration) within the device?
Does it need to be purely horizontal to register any change? Thanks.
I expect 30degrees is enough but I don’t know the minimum.
acceleration property is not the same as angle/orientation property which seems to drive opened/closed status. Acceleration DOES indicate if the sensor is “active”.
so I expect no, it does not need to be “purely” horizontal (to indicate opened). “Nominally Vertical” orientation seems to be the default position to indicate closed.
tgauchat
(ActionTiles.com co-founder Terry @ActionTiles; GitHub: @cosmicpuppy)
3
The accelerometer measures 3-vectors of G-Force, including actual gravity towards the center of the Earth (aka, “down”). Even miniscule changes in the orientation of the sensor (eg, 1°… yes, 1 degree) is more than sufficient for it to register a change in the orientation.
It is up to the software (the Device Type Handler and/or SmartApp) to define what levels of vector delta represent an open vs closed door.
This is the tremendous advantage of an accelerometer based sensor instead of a less expensive (but quite functional) enclosed ball bearing tilt-sensor.
Dig up the applicable source code to find out what parameters have been set to define delta orientation.