Thanks for the video 
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By the way (not sure whether relevant and just a thought):
If you are looking for a way to determine whether someone is in bed to set the sleep state in Homey, consider using a car seat occupancy sensor (+/- $5-10 on AliExpress) connected to an Aqara T1 water leak sensor. It has screws on the bottom to which you can connect the occupancy sensor cables.
The water sensor acts as a binary (Zigbee) sensor. Place the occupancy sensor under the sheets midway on the mattress. Use a flow to set the sleep state based on the water sensor’s alarm and fine-tune it (e.g. only set to sleep after 21:00 o’clock).
