ThibaultDC:
Otherwise, I found the Samsung SmartThings Multipurpose Door Sensor, which includes a vibration sensor for door knocker detection. Although its usage is limited, it’s not a sticker that you can put on a window or a chair.
People do use them on office chairs, you can just attach it to the back or even underneath. It’s a little clunky, but it will work. For this purpose you only need the sensor part, you don’t need the smaller magnet piece.
See the following project report (the topic title of a clickable link)
I decided to experiment with the smart multi’s today. I had two extras after my move. I had the crazy idea that I could strap them to the chairs in my home office and use them as presence detectors. It works. But in looking at the data, I think I could do more. Just wanted to put this out to the collective and get some opinions.
My first experiment was trying to detect taps on the arm rest. This seemed to work OK, but will require a new SmartApp.
Second experiment was trying to detect if I am leaning back too much or not maintaining the correct posture.
Any other ideas?
Aqara makes a zigbee vibration sensor which is thinner, but less reliable in a smartthings environment.
Xiaomi vibration sensor
https://www.amazon.com/Aqara-Vibration-Sensor-Automation-Compatible/dp/B07PJT939B/
The fibaro multisensor is very reliable, highly adjustable, zwave, pretty small, but expensive.
Ultra smart MultiSensor PRODUCT HIGHLIGHTS Detects motion, temperature, light and vibration Extremely small for discreet and flexible installation Instant LUX reports - great for Z-Wave light automation Test network range anytime from the...
Price: USD 43.95
What country are you in? The device selection does vary.