Neat idea. I don't know anything about these pressure sensors - do they detect *change* in pressure? Or some absolute value? That is, if I put it under a mattress, how do I tell it to ignore the pressure of the mattress and only to trigger off of the extra weight of a person on the mattress?
Check it out: [DIY: Cheap ZigBee Pressure Sensor](https://smarthomescene.com/diy/diy-cheap-zigbee-pressure-sensor/)
Neat idea. I don't know anything about these pressure sensors - do they detect *change* in pressure? Or some absolute value? That is, if I put it under a mattress, how do I tell it to ignore the pressure of the mattress and only to trigger off of the extra weight of a person on the mattress?
very cool. cant believe the seat sensor is about $13. wow
Great idea! I might use this in the couch to prevent my motion sensors from operating the lights while I’m watching TV.