Difference between revisions of "Hall Effect Sensor"
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| + | Hall effect sensors detect whether a magnet is near. Useful for non-contact/waterproof type switches, position sensors, rotary/shaft encoders. | ||
| + | Runs at 3.5V up to 24V. To use connect power to pin 1 (all the way to the left), ground to pin 2 (middle) and then a 10K pull up resistor from pin 3 to power. Then listen on pin 3, when the south pole of a magnet is near the front of the sensor, pin 3 will go down to 0V. Otherwise it will stay at whatever the pullup resistor is connected to. Nothing occurs if a magnet's north pole is nearby (unipolar). | ||
| − | [https://s3.amazonaws.com/linksprite/Arduino_kits/SensorsPack/0004824_US5881_rev008.pdf Datasheet] | + | ==Resources== |
| + | *[https://s3.amazonaws.com/linksprite/Arduino_kits/SensorsPack/0004824_US5881_rev008.pdf Datasheet] | ||
Revision as of 14:31, 28 November 2012
Hall effect sensors detect whether a magnet is near. Useful for non-contact/waterproof type switches, position sensors, rotary/shaft encoders.
Runs at 3.5V up to 24V. To use connect power to pin 1 (all the way to the left), ground to pin 2 (middle) and then a 10K pull up resistor from pin 3 to power. Then listen on pin 3, when the south pole of a magnet is near the front of the sensor, pin 3 will go down to 0V. Otherwise it will stay at whatever the pullup resistor is connected to. Nothing occurs if a magnet's north pole is nearby (unipolar).
