Hall Effect Sensor Module: Difference between revisions
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=Introduction= | =Introduction= | ||
=Sensor and Holder Assembly= | |||
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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. | ||
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[[File: sensorholder.svg|500px]] | [[File: sensorholder.svg|500px]] | ||
== | =Dimensions= | ||
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= | |||
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+. | |||
==Older Sensor Holder== | |||
[[ | [[Image: halleffectsensor4.jpg|200px]] | ||
Revision as of 06:25, 9 December 2012
Introduction
Sensor and Holder Assembly
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.
For CEB Press, weld thread parallel to bolt for one sensor and perpendicular to bolt for the second sensor.
Dimensions
Aluminum Rectangular Bar is 0.5" x 1.5" x
Materials
Aluminum Bar 6061T6 1/4" x 1/2" x 72"
Silicone Caulk Look for the "neutral cure" type of silicone caulk if using copper wires
22 AWG Stranded Wire of different colours
Cord jacket for 3 22AWG wires
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
- Cut 1 piece of aluminum flat bar to length (ex. 10cm)
- Cut 3 pieces of 22AWG wire and 1 piece of jacket to the desired length (ex. 150cm)
- Strip the 3 pieces of wire 10mm at one end and 20mm at the other end
- Check and confirm which pins of the hall effect sensor are to which inputs/outputs (ex. V+, V-, Signal) see datasheet
- Solder the 20mm ends of the wires
- Solder and shrink tube the 10mm ends of the wires to the hall effect sensor pins
- Recheck which wires are connected to which pins
- Attach a label near the sensor to each wire about what the wire's pin is (ex. Red is V+, Black is V-, Green is Signal)
- Clamp or weigh down the wires near the sensor so that the sensor is stationary
- Position the aluminum flat bar underneath the sensor. The sensor should be near an end of the flat bar, the sensor's wire output parallel to the bar and inward toward the other end of the bar
- Apply silicone to the sensor and its pin-wire connection. The objective is to mount the sensor to the aluminum while waterproofing the pin-wire connection.
- Insert the 3 long wires into the jacket
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+.
Older Sensor Holder
