I just made one of these as well. Used poster board from staples and heavy duty tinfoil. I also have a slat bed frame, with a memory foam mattress. Seems to work pretty good. My settings are 12 when off, 7 when on. 10 when the dog jumps on he is about 16 pounds.
I copied an article I read from Phil Hawthorne, “Making Home Assistant’s Presence Detection not so Binary”, and applied it to the bed sensor.
I now have states of:
- Just Laid Down
- Asleep
- Just Left Bed
- Back to Bed
- Bed Empty
I can use these to run different automatons depending on each specific state.
Pretty cool.