BNO086
Sensors
9-axis IMU with on-chip sensor fusion — outputs ready-to-use orientation data.
DHT11
Sensors
Simple digital temperature and humidity sensor.
HC-SR04 Ultrasonic
Sensors
Ultrasonic distance sensor — sends a sound pulse and times the echo to measure distance.
Soil Moisture Sensor
Sensors
Two-part module — a probe that goes into soil, plus a small board that reads it.