I want to share with you how I created a chair occupancy sensor for $10. I have a motion sensor in my room, that toggles the lights. However, the lights often turned off because I’m not moving that much in the chair. So I had to find a solution for that.
From the car seat sensor, pull the wires out of the connector. Then, solder them to the ends of the magnetic sensor on the Aqara pcb, like below. It does not matter which sides the black or red wires are soldered.
Next step is to put it in your chair. I had to rip apart the fabric from the bottom part of the chair to get the sensor under it, but most chairs have a zipper which makes it easier and cleaner to do.
just slap the Aquara sensor to the side of the toilet with one bit on the seat, ive done this to prevent the motion lights going off while i read on my throne and it works great, also got an aqura humidity sensor in the shower so when im in the shower it stops them going off as well.
Does the sensor go below the fabric of the seat or underneath the foam padding as well? How thick do you think the foam could be? Do you think the sensor could trigger under a sofa cushion, for example?
Question, I’m thinking of using this as a bed sensor… But will the mattress be too heavy (will it set the sensor as always on?) Or can you calibrate to different weight?
I’ve picked up a set of four load cells (50kg each, so 200kg allowed for the bed). I’m planning to wire that up and make an mqtt sensor that reports the weight on the bed. Here’s a youtube on the build… firmware links are included in the description: https://www.youtube.com/watch?v=VCEgeDN0RLw
I guess I have a solution.
My bathroom has two sensors. PIR and door sensor.
PIR sensor sets timer for 15min after last motion (basically infinity). Door sensor sets same timer to 20sec.
So you have light once you open door, no need to wave for PIR to engage. Once you are inside PIR resets timer for 15min. If you go out light goes off in 20sec. If someone came in on the same go, PIR will keep light on.
That’s a pretty good idea! My kids usually don’t close the door all the way which is a bit of a problem but I think I could put the door sensor over near the hinges to account for that.
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