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Voice Announcer
These sensor digital values are then available to the MCU via the I2C bus
in this example the Priamry power will be provided by the Arduino
photo reflective sensor emits a light beam (visible or infrared) from its light-emitting element
which can avoid leaking problems
3 Axis Digital Compass ( HMC5883L) Digital Voice AnnouncerIntroduction: The 3 Axis Digital Compass HMC5883L sensor is able to acquire information even in a low magnetic field. Distributed over the three axes, this information is converted into a differential voltage of 2. 7 to 6. 5 VDC to provide input for a vast range of microcontrollers operating at different voltages. The raw digital output value can be used to calculate direction and location, and for measuring both the magnitude and the direction of the