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Topic: Can't get hall effect sensor values to print to monitor (Read 73 times) previous topic - next topic


I am trying to use a A3144 hall effect sensor with an Arduino MEGA 2560 to measure RPM of a fan.  However, not only do I not get the RPM printing out to the serial monitor, but I do not get anything printing out to it.  I have the digital input 1 connected to pin 3 of the sensor, ground connected to pin 2, and 5 V connected to pin 1.  I also have a 10K ohm resister between pin 1 and 3 of the sensor.  These connections are from the spec sheet and I attached the picture of it.  I have also attached the code.  I did not create the code and I am very new to Arduino.

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