Create sensors.md (#11)

docs/src/content/docs/node/sensors.md

@@ -0,0 +1,41 @@
+---
+title: sensors
+description: list of possible features implemented via sensors
+---
+
+display status:
+	blue LED
+		=> own pet is currently on this device
+	RGB LED (neopixel)
+		=> visualizes pets emotions (also works while pet is away)
+
+keep track of time:
+	RTC
+		=> day/night cycle
+		=> time-based events
+		=> create a log of previous actions and their time
+
+measure environment:
+	temperature sensor
+		=> pet has to be warmed up/cooled down
+	(humidity sensor)
+		=> pet is unable to be walked outside when humidity is too high
+	(light sensor)
+		=> more active during bright environments
+	(proximity sensor)
+		=> pet detects owner
+			=> pet wakes up from sleep
+			=> pet gets happy if already awake
+		=> pet can be petted
+
+track orientation:
+	| gyro
+	| accelerometer
+	| (magnetometer)
+	=> wake the pet up
+	=> move pet when device is tilted
+	=> pet moves when device is in motion
+		=> optional: pedometer
+
+
+