A sensor is a device that converts a real-world property (e.g. temperature) into data that a computer can process
Examples:
| Sensor | What it Detects |
|---|---|
| Temperature | Temperature |
| Light | Light / dark |
| Pressure | Pressure (e.g. someone standing on it) |
| Moisture | Dampness / dryness |
| Water-level | How full / empty a container is |
| Movement | Movement nearby |
| Proximity | How close / far something is |
| Switch or button | If something is touching / pressing it |