Sensors Survey

Something new of light sensors

• pulse oximeter
• dust sensor(infrared LED inside)
• SHARP GP2D12(tell us a range of distance - uses the light to bounce off an object and reads the relative brightness as we move, which is called ranging principle)
• passive infrared detector(sth's there or not)

Something new of sound sensors

• measure the echo coming back off the object
• takes a longer distance to sense than light sensors(because sound moves slower than light)

Something new of stretch/bend sensors

• stretch sensor(uses conductive rubber, its resistance changes as it is deformed)
• bend sensor(carbon inside changes thickness as it is bent )
• strain gauge(changes metal thickness as it is bent) - need an amplifier

Something new of MEMS(Micro Electro Mechanical System) sensors

• accelerometer(measures changing acceleration in three axes)

• gyrometer(measures changing angular acceleration in three axes)

  

  Drawing tools： Excalidraw

Datasheets

Items need to pay attention

• $Vcc$ = Operating Supply Voltage
• $Icc$= Average Supply Current