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rotor rolls
but it works equally well as an obstacle avoidance sensor on a robotic vehicle or any other applications where detection of objects or obstacles within its range is desired such as for a security system or monitoring a pet door
within 7 meters
An on-board microphone
Street light auomatic control
Photodiode BPW34 -(High Sensitivity Light Sensor) Metal Horn rotor rollsIntroduction: The BPW34 is a high speed photodiode with good photo sensitivity. It responds to visible and near infrared radiation. Pinout : Features : Reverse Breakdown Voltage: 60V Switching Speed: 20nS Diode Capacitance: 70pF (1MHz, Vr=0V) Open Circuit Voltage: 350mV Rise and Fall time: 100ns (each)