Hall Effect Sensor Module - Revision history

YK: /* Introduction */

2012-12-09T07:03:51Z

Introduction

← Older revision		Revision as of 07:03, 9 December 2012
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	A hall effect sensor outputs an electrical signal that depends on how magnetic fields interact with the sensor.		A hall effect sensor outputs an electrical signal that depends on how magnetic fields interact with the sensor.

	The hall effect sensor usually has 2 possible output values that are "latching". That means the sensor outputs ~~the lower~~ or ~~higher~~ signal and continues to do so until the magnetic field of an opposite polarity passes by.		The hall effect sensor usually has 2 possible output values that are "latching". That means the sensor outputs a low voltage or high voltage signal and continues to do so until the magnetic field of an opposite polarity passes by.

	For example, the hall effect sensor is turned on in the "low-latched state". The sensor will continuously output the low value, ex. 0V. Now pass the north pole of a magnet over the sensor. If nothing happens, you know that the "low-latch state" occurs with the north pole. Now pass the south pole of a magnet over the sensor. The sensor now should change into the "high-latched state" and continuously output the high value ex. 1V until a magnet's south pole comes near the sensor to "latch" it into another state.		For example, the hall effect sensor is turned on in the "low-latched state". The sensor will continuously output the low value, ex. 0V. Now pass the north pole of a magnet over the sensor. If nothing happens, you know that the "low-latch state" occurs with the north pole. Now pass the south pole of a magnet over the sensor. The sensor now should change into the "high-latched state" and continuously output the high value ex. 1V until a magnet's south pole comes near the sensor to "latch" it into another state.

YK at 07:03, 9 December 2012

2012-12-09T07:03:23Z

← Older revision		Revision as of 07:03, 9 December 2012
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	=Introduction=		=Introduction=

			You know how a magnet has a magnetic field with a north pole and a south pole?

			A hall effect sensor outputs an electrical signal that depends on how magnetic fields interact with the sensor.

			The hall effect sensor usually has 2 possible output values that are "latching". That means the sensor outputs the lower or higher signal and continues to do so until the magnetic field of an opposite polarity passes by.

			For example, the hall effect sensor is turned on in the "low-latched state". The sensor will continuously output the low value, ex. 0V. Now pass the north pole of a magnet over the sensor. If nothing happens, you know that the "low-latch state" occurs with the north pole. Now pass the south pole of a magnet over the sensor. The sensor now should change into the "high-latched state" and continuously output the high value ex. 1V until a magnet's south pole comes near the sensor to "latch" it into another state.

	=Sensor and Holder Assembly=		=Sensor and Holder Assembly=

YK: /* Materials */

2012-12-09T06:26:58Z

Materials

← Older revision		Revision as of 06:26, 9 December 2012
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	=Materials=		=Materials=

			Aluminum and Steel - get them from [https://www.speedymetals.com/ SpeedyMetals]

	[https://www.sparkfun.com/products/9312 Hall Effect Sensor]		[https://www.sparkfun.com/products/9312 Hall Effect Sensor]

YK: /* Testing */

2012-12-09T06:25:17Z

Testing

← Older revision		Revision as of 06:25, 9 December 2012
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	=Testing=		=Testing=

	Connect 5VDC power supply to + and - supply voltage wires for hall effect sensor. Measure voltage between signal wire and - supply wire using a multimeter. Wave a strong magnet over the hall effect sensor. Flip the magnet and wave it over the sensor again and repeat. The voltage reading should change each time you do this by approximately ~~3V+~~.		Connect 5VDC power supply to + and - supply voltage wires for hall effect sensor. Measure voltage between signal wire and - supply wire using a multimeter. Wave a strong magnet over the hall effect sensor. Flip the magnet and wave it over the sensor again and repeat. The voltage reading should change each time you do this by approximately 1V.

	==Older Sensor Holder==		==Older Sensor Holder==

	[[Image: halleffectsensor4.jpg\|200px]]		[[Image: halleffectsensor4.jpg\|200px]]

YK at 06:25, 9 December 2012

2012-12-09T06:25:03Z

← Older revision		Revision as of 06:25, 9 December 2012
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	=Introduction=		=Introduction=

	~~Note: newer sensor design consists of a 0.5"x1.5"x6" long alluminum bar upon which the Hall effect sensor is mounted.~~		=Sensor and Holder Assembly=

	=~~New~~ Sensor Holder=

	Installed on CEB Press. Adjustable for proximity to magnets, and up-down adjustable via clamp mechanism. Threaded rod is 3/4", and 2 bolts hold it firmly in place. Known bug: clamp mechanism around frame needs to use 2 - not 1 - bolts for clamping, otherwise rotation around bolt exists.		Installed on CEB Press. Adjustable for proximity to magnets, and up-down adjustable via clamp mechanism. Threaded rod is 3/4", and 2 bolts hold it firmly in place. Known bug: clamp mechanism around frame needs to use 2 - not 1 - bolts for clamping, otherwise rotation around bolt exists.
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	[[File: sensorholder.svg\|500px]]		[[File: sensorholder.svg\|500px]]

	==~~Older Sensor Holder==~~		=Dimensions=
	~~[[Image: halleffectsensor4.jpg\|200px]]~~

	~~=Action Info=~~		Aluminum Rectangular Bar is 0.5" x 1.5" x

	Materials		=Materials=

	[https://www.sparkfun.com/products/9312 Hall Effect Sensor]		[https://www.sparkfun.com/products/9312 Hall Effect Sensor]
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	Wire Label (Important! Label your wires so you know which wire is connected to which pin- it'll save you a lot of trouble later on!)		Wire Label (Important! Label your wires so you know which wire is connected to which pin- it'll save you a lot of trouble later on!)

	~~----~~		=Steps=

	Steps

	*Cut 1 piece of aluminum flat bar to length (ex. 10cm)		*Cut 1 piece of aluminum flat bar to length (ex. 10cm)
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	*Insert the 3 long wires into the jacket		*Insert the 3 long wires into the jacket

	~~----~~		=Testing=

	~~Testing~~		Connect 5VDC power supply to + and - supply voltage wires for hall effect sensor. Measure voltage between signal wire and - supply wire using a multimeter. Wave a strong magnet over the hall effect sensor. Flip the magnet and wave it over the sensor again and repeat. The voltage reading should change each time you do this by approximately 3V+.

	~~Upload the following code into the [[Arduino]] microcontroller then check the serial monitor for the signal from the hall effect sensor (SignalValue/1024 being the fraction of 5V)~~		==Older Sensor Holder==

	[[~~File~~: ~~halleffecttest~~.~~ino~~]]		[[Image: halleffectsensor4.jpg\|200px]]

YK at 06:16, 9 December 2012

2012-12-09T06:16:48Z

← Older revision		Revision as of 06:16, 9 December 2012
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	Installed on CEB Press. Adjustable for proximity to magnets, and up-down adjustable via clamp mechanism. Threaded rod is 3/4", and 2 bolts hold it firmly in place. Known bug: clamp mechanism around frame needs to use 2 - not 1 - bolts for clamping, otherwise rotation around bolt exists.		Installed on CEB Press. Adjustable for proximity to magnets, and up-down adjustable via clamp mechanism. Threaded rod is 3/4", and 2 bolts hold it firmly in place. Known bug: clamp mechanism around frame needs to use 2 - not 1 - bolts for clamping, otherwise rotation around bolt exists.

	[[Image:sensorlarge.jpg]]		[[Image:sensorlarge.jpg\|400px]]

			[[Image: halleffectsensor1.jpg\|200px]]
			[[Image: halleffectsensor2.jpg\|200px]]
			[[Image: halleffectsensor3.jpg\|200px]]
			[[Image: halleffectsensor5.jpg\|200px]]

	For CEB Press, weld thread parallel to bolt for one sensor and perpendicular to bolt for the second sensor.		For CEB Press, weld thread parallel to bolt for one sensor and perpendicular to bolt for the second sensor.

YK: /* Older Sensor Holder */

2012-12-09T06:15:57Z

Older Sensor Holder

← Older revision		Revision as of 06:15, 9 December 2012
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	==Older Sensor Holder==		==Older Sensor Holder==
	[[Image: halleffectsensor4.jpg\|200px]]		[[Image: halleffectsensor4.jpg\|200px]]
	~~[[Image: halleffectsensor1.jpg\|200px]]~~
	~~[[Image: halleffectsensor2.jpg\|200px]]~~
	~~[[Image: halleffectsensor3.jpg\|200px]]~~

	~~[[Image: halleffectsensor5.jpg\|200px]]~~

	=Action Info=		=Action Info=

YK at 06:14, 9 December 2012

2012-12-09T06:14:03Z

← Older revision		Revision as of 06:14, 9 December 2012
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	Note: newer sensor design consists of a 0.5"x1.5"x6" long alluminum bar upon which the Hall effect sensor is mounted.		Note: newer sensor design consists of a 0.5"x1.5"x6" long alluminum bar upon which the Hall effect sensor is mounted.
	==New Sensor Holder==
			=New Sensor Holder=

	Installed on CEB Press. Adjustable for proximity to magnets, and up-down adjustable via clamp mechanism. Threaded rod is 3/4", and 2 bolts hold it firmly in place. Known bug: clamp mechanism around frame needs to use 2 - not 1 - bolts for clamping, otherwise rotation around bolt exists.		Installed on CEB Press. Adjustable for proximity to magnets, and up-down adjustable via clamp mechanism. Threaded rod is 3/4", and 2 bolts hold it firmly in place. Known bug: clamp mechanism around frame needs to use 2 - not 1 - bolts for clamping, otherwise rotation around bolt exists.

	[[Image:sensorlarge.jpg]]		[[Image:sensorlarge.jpg]]

			For CEB Press, weld thread parallel to bolt for one sensor and perpendicular to bolt for the second sensor.

			[[File: sensorholder.svg\|500px]]

	==Older Sensor Holder==		==Older Sensor Holder==
	[[Image: halleffectsensor4.jpg\|~~500px~~]]		[[Image: halleffectsensor4.jpg\|200px]]

	[[Image: halleffectsensor1.jpg\|200px]]		[[Image: halleffectsensor1.jpg\|200px]]
	[[Image: halleffectsensor2.jpg\|200px]]		[[Image: halleffectsensor2.jpg\|200px]]
	[[Image: halleffectsensor3.jpg\|200px]]		[[Image: halleffectsensor3.jpg\|200px]]
	[[Image: halleffectsensor5.jpg\|~~300px~~]]
			[[Image: halleffectsensor5.jpg\|200px]]

	=Action Info=		=Action Info=

YK at 06:09, 9 December 2012

2012-12-09T06:09:55Z

← Older revision		Revision as of 06:09, 9 December 2012
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	[[File: halleffecttest.ino]]		[[File: halleffecttest.ino]]

	~~=Developers=~~

	~~Yoonseo Kang - ykang404@gmail.com~~

Donovan: /* Action Info */

2012-12-02T00:02:19Z

Action Info

← Older revision		Revision as of 00:02, 2 December 2012
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	Testing		Testing

	Upload the following code into the Arduino microcontroller then check the serial monitor for the signal from the hall effect sensor (SignalValue/1024 being the fraction of 5V)		Upload the following code into the [[Arduino]] microcontroller then check the serial monitor for the signal from the hall effect sensor (SignalValue/1024 being the fraction of 5V)

	[[File: halleffecttest.ino]]		[[File: halleffecttest.ino]]