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With the Arduino shield footprint
four separate diodes sensitive to different directions
Servo: 500 to 2500 us
two yellow receive/transmit LEDs let you know when data is being transmitted to or from the GPS module serial interface
Gravity: URM09 Ultrasonic Distance Sensor (2～500cm, I2C) Category_Electronics/Connectors With the Arduino shield footprintDFRobot URM09 is an ultrasonic sensor specifically designed for fast ranging and obstacle avoidance application. Its measuring frequency can reach up to 50Hz. The sensor adopts built in temperature compensation and I2C communication. There are three measurement ranges designed for programs to select: 150cm, 300cm and 500cm. Please note that shorter range will provide shorter ranging cycle and lower sensitivity. You may need to set it according to your
