list of available sensors + a little on how they work + how they are built. maybe what devices they are found in

Key Sensor Types • Environmental: Gas (MQ-135), water, temperature (thermistors). • Motion: IMUs, gyroscopes, accelerometers. • Biometrics: Heart rate, SpO2, fingerprint. • Light & Imaging: Cameras, photodiodes, LiDAR, ultrasonic. • Touch: Capacitive and resistive. Spotlight • Seeed Studio’s Grove system for prototyping. • Videos: Sensor integration in real-world applications.

• air pollution
• light
• gas
• water
• ultrasonic / distance
• microphone
• IMU / GPS / accelerometer / motion
• EMG / EEG / etc
• heart / ECG
• temperature
• IR - ex: face id
• pressure
• flex
• fingerprint