- can i mount both ir sensors together to build a break beam sensor (like the picture from dougp) ?
- what is the maximum distance that a ir proximity sensor can detect ?
- what is the added value to have a capacitor ?
A capacitive sensor will NOT detect a plastic bag passing by. Non-conductive materials are generally not detectable by such as sensor.
Capacitive sensors are used for non-contact detection of metallic objects & nonmetallic objects (liquid, plastic, wooden materials and so on).