The Hall effect is the production of a voltage difference across an electrical conductor by a magnetic field.

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99 views

Sensing current upto 2A w/ high resolution

I'm trying to sense a current that will flow in a motor (current shouldn't exceed 2Amps), and I'd like to have a high resolution on this measurement. I was hoping on using the ACS712, but it says the ...
0
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1answer
33 views

Multiple hall effect sensors in proximity

I'm interested in using a linear Hall effect sensor to measure displacement varying by about 1.5 inches. The idea is I have a piston with a magnet at the end and a Hall sensor at the end of the cavity ...
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1answer
24 views

Hall-sensor replacement for reed switch

I have a device in which a reed switch is encased in potting compound. (So impossible to identify.) My problem is, that for my application the switch is too slow. I am considering replacing it with a ...
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0answers
29 views

Wire button to hall-effect sensor

I'm a little stuck at the moment. I'm trying to wire paddle shifters to my car and the only way to do so is the hard way by wiring the paddles directly to the sequential output on the gear selector. ...
0
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1answer
51 views

Good ways to read a 16-bit code at very short distances (~0.5cm)

I'm looking at ways to read a 16-bit code over a very short distance, through an opaque material. The sensors might be quite close to each other (~10cm), and they'll need to read only the code that ...
3
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1answer
86 views

Another motorcycle project: gear selection indicator [closed]

I have another little project that I have been thinking of making, but am having some trouble with the circuit design. In a nutshell, here is what I am envisioning: Objective: Create an electronic ...
3
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2answers
110 views

Problem with Hall effect sensor circuit to detect magnet position

I own a used Clavia ddrum4 SE drum module. It employs a fairly advanced technique to detect the position of the hi-hat; on the stand is mounted a magnet, and in the hi-hat pad is a Hall effect sensor ...
0
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1answer
59 views

chosing the right Hall effect sensor

For a student project, I need a Hall Effect current sensor. What I am going to do is to charge 8 rechargeable Li-Ion batteries of 3.7 volts in series with 34 volt supply and the buck circuit frequency ...
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0answers
73 views

Sensor circuit simulation / Fault detection

I am working on a project that requires the simulation of a hall effect sensor. The application is an electronic stability control (ESC) (aka Vehicle Dynamics control or VDC) system on a 2014 Subaru ...
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3answers
347 views

Reading an ABS wheel speed sensor

I am trying to use an Arduino to intercept and send out modified wheel speed readings on a 2014 Subaru Forester. The problem I am running into is the wheel speed signal. From what I can tell the ...
1
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1answer
101 views

current control via microcontroller

I have a micro-controller which calculates and decides about the current each minute. Then for one minute the circuit must hold that current constant. Then it should control the current via a buck ...
0
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1answer
71 views

Testing hall effect sensor of a motor [Beginer question]

I would like to test the hall effect sensor of a motor (DC brushless Papst dual coil) I have for a small project of mine. I have found a bit of information online, but I cannot seem to figure out what ...
4
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2answers
1k views

Reduce noise from a Hall effect sensor

I am currently working on a magnetic levitation project using a Hall effect sensor for distance measurement. I drive the coil using two 12 V car batteries in series to form a 24 V DC source, ...
0
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3answers
316 views

Why do I need I large resistor to the GATE of my MOSFET?

I tried to control the brightness of a LED using a Linear Hall Effect Sensor fed to an Arduino, and PWM output to the gate of a MOSFET connected to a 12V battery. The LED was flickering a lot, and ...
0
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1answer
112 views

Weird Hall Effect Sensor output

I have just bought 3 linear hall effect sensrs of type SS495A. However, when I hook them up to my Arduino Uno's analog input, I get some really weird results. I use a 5V power supply, and my output ...
0
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1answer
136 views

bipolar linear hall effect sensor choice

ANSWER: This is the best one I found for my purpose mouser.be/new/Texas-Instruments/ti-drv5053-hall-effect-sensor I'm doing a project where I use Hall effect sensor as a proximity meter. Using to ...
0
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1answer
43 views

Does placement (high side vs low side) of a hall effect sensor matter?

So I ran into something interesting today. I have a hall effect sensor (L18PXXXD15) and I was attempting to measure current of a 30Vrms sine wave across a 50 ohm load. However, when I connected my ...
2
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2answers
154 views

How build coil for respiratory magnetometer or find a better option (hall effect)?

I am trying to build an respiratory magnetometer. This device is no longer widely used even thought it was well liked. The reason it is no longer used is due to the fact that the coils used in it were ...
0
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0answers
64 views

Variable Reluctance Sensor Type

I am trying to inpret the signal from a crankshaft speed sensor. The sensor is a variable reluctance sensor. There are two wires running to this sensor and the waveforms (when viewed through an ...
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0answers
43 views

Dual Analog Hall Effect Sensor to Digital Conversion

I already have a Dual Analog Hall Effect Sensor with 4 pins (VCC, GND, Output1, Output2) and i would like to convert the output into digital and if possible Speed and Direction outputs like this chip ...
0
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1answer
64 views

ACS758KCB Wiring Diagram

I am using the ACS758KCB Hall Effect sensor for a project. On the front page of the Datasheet it list a .1uF capacitor between Vcc and GND, in addition it lists a capacitor, Cf, between GND and ...
0
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1answer
27 views

Certain hall switch operation

I have a question regarding a Hall sensor IC. I cant quite understand how is it possible that it can operate only on 2 wires, instead of 3. The way I can think of it is that 2 wires provide Vcc and ...
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2answers
139 views

All sorts of fail converting Schematic to Bread Board

Schematic: Fritzing BB View: Total n00b: I am trying to layout my breadboard based this schematic, but I'm not sure if I've even come close. The LM34 in the graphic is actually a SS494B hall ...
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2answers
102 views

Turn off LED with Hall effect sensor?

I have seen many circuits which allow you to turn on an LED when a magnet is placed close to a Hall effect sensor. But I need a circuit that will turn off the LED when the magnet is close to the ...
0
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3answers
540 views

simple way to measure wheel spinning speed with Adroid phone + magnet (and maybe Reed Switch)

I'm trying to create the simplest/easyest/cheapest possible way to measure the speed at which a wheel is turning (like a bicycle speedometer) with a smartphone. On the phone the information will be ...
0
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1answer
142 views

Why isn't this LM2917 circuit working to turn off a transistor?

It was suggested to me that I should post a new question (original question here: Minimal Hall effect sensor circuit to keep something off after certain RPM achieved). The below schematic is for ...
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1answer
429 views

Difference between a magnetic field sensor and a hall effect sensor

I can't understand the difference between a magnetic field sensor and a hall effect sensor, to me are both the same. I have a voltage detector pen that I can use when I troubleshoot my house I ...
0
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1answer
196 views

Minimal Hall effect sensor circuit to keep something off after certain RPM achieved

I have a somewhat limited understanding of electronics and circuits. I'm trying to build a circuit that will keep a transistor in an off state after a given threshold of RPM is achieved using a A3144E ...
0
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2answers
128 views

Hall effect sensor or Reed switch unique identification

I would like to use a hall effect or reed switch as a proximity sensor, but also want to get identification of the item being sensed. There would be about 30 unique items. Does anyone know of an easy ...
0
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1answer
93 views

Using shielded cable on an ebike hub motor, what ground to use

I have been having strange issues with an ibike that I have built, in that interference keeps being generated from the motors phase wires into the RX/TX lines on the hall sensors. I have been advised ...
18
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1answer
2k views

What are the advantages of a shunt resistor vs. a hall effect sensor?

I'm constructing a boost converter, and I need to measure both the input current and the output current. Currents range anywhere from 25A to 200A, depending on the model. My controller is referenced ...
0
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1answer
187 views

Linear hall sensor to detect large fields with digital output?

For an application I need to measure magnetic fields in the range between -200mT to +200mT with sub-mT resolution. Additionally a microprocessor is available but I don't have a high resolution ADC and ...
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1answer
133 views

Two ICs actively driving same line

For a hobby project, I want to connect my own circuitry to a PCB which I have not developed. On the PCB is a linear hall sensor which outputs a voltage at about VDD/2 when a magnetic field is not ...
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1answer
66 views

Amplying hallsensor Output

I am planning to use Hall sensor.I am trying to measure The high DC current up to 20A .Is any can share link to Build ampilfied network to amplify hall out put and feed back to Arduino. And another ...
3
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4answers
389 views

Hall effect sensor as toggle switch

I know little enough about electronics to have to ask basic questions :P If I wanted to use a hall effect sensor as a toggle switch what is the minimal circuit that could be used? Essentially want ...
1
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1answer
181 views

Detecting position — Hall effect sensor?

I have an extruder that is producing a molten plastic filament that cools after a brief while (2-3 seconds). The plastic stream needs to be a consistent diameter, and one method of doing this is to ...
2
votes
1answer
188 views

hall effect sensors for magnet position

this may be more of a geometry question than an EE one, but i'll ask it here anyway. I'm trying to build a weather vane, and am looking at using several linear hall effect sensors (such as the allegro ...
6
votes
2answers
761 views

Why don't hall effect current sensors exist for low currents?

There do not seem to be hall effect current senors available for small currents, say on the order of 500mA. I'm guessing this is due to some technical or physical limitation. What is it?
2
votes
3answers
507 views

What exactly is the purpose of a Hall sensor in a BLDC?

I was reading an articles about brushless DC motor, used in CPU fans, from this link. First I thought that the Hall sensors are used only for measuring the speed, but that is not correct, it has ...
3
votes
1answer
494 views

Connecting linear Hall Effect sensor directly to microcontroller ADC

I am planning on connecting an Allegro A1318 Hall Effect sensor to a 12-bit ADC on an NXP LPC1751 micro. My application is to compare relative differences in magnetic fields between various magnets. ...
0
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0answers
148 views

How to pass +12V onto a wire without a relay?

I am working with hall effect sensor, which sends 10.75V on output wire when sensor fully active (the sensor is used in clutch pedal switch to tell the vehicle when clutch pedal is pressed or not). I ...
0
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0answers
107 views

How to decode the hall-effect sequence from a motor?

I have a motor running in open loop (voltage controlled PWM/ freq.) and am reading the values of the 3 hall-effect sensors via UART. Ideally, I thought the data would show 6 commutation states with 6 ...
2
votes
0answers
394 views

Analogue Hall sensored brushless outrunner motor position control

I would like to produce a low cost high power:weight servo drive using a brushless outrunner motor, like those use in radio control planes: Some of these motors leak enough magnetic flux out the ...
4
votes
1answer
985 views

Is the Holzer effect the same as the Hall effect? (looking for replacement sensor)

I was looking for a replacement component for what I thought would be a "Hall effect sensor" (used in an electric scooter throttle handlebar). I had bought a replacement throttle about a month ago, ...
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1answer
271 views

How to implement a radial encoder with a diametrically magnetized magnet using a hall-effect sensor?

I want to implement a rotary encoder that doesn't use optical sensing or physical contacts. I found the following solution using a diametrically magnetized magnet on the shaft, and a dual axis hall ...
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vote
1answer
2k views

AH276 hall effect sensor with microcontroller (sensor already in circuit - brushless fan)

I'm currently trying to read an AH276 hall effect sensor using an AVR microcontroller. The sensor is built-in in a brushless fan I'm using and it's operating as the fan's controller. The sensor has ...
1
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1answer
82 views

How do I know what the right signal amplifier to use is in order to program a hall-effect sensor?

I am trying to look for a signal amplifier in order to program the sensitivity and offset of the A1362 Hall-Effect sensor. Doing a simple google search reveals: ...
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1answer
741 views

How to use PIC A/D converter with ACS712 Hall effect current sensor

I have built a one amp power supply and want to use a Sparkfun ACS712 Hall effect current sensor with a PIC and 7 segment LED display to show the current in milli-amps. The PIC A/D input has ground as ...
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2answers
556 views

How do I know if my hall-effect sensor is working correctly?

On pg. 18 Figure 5 of this data sheet you will see a pulse train required to program the sensitivity of the A1362 Hall-Effect sensor. I am using the following circuit: Using Figure 5 from the ...
2
votes
1answer
530 views

Is it possible to program a hall-effect sensor with an Arduino?

On pg. 18 Figure 5 of this data sheet you will see a pulse train that allows for programming the sensitivity of the A1362 Hall-Effect sensor. So far I have tried to manually apply required voltage ...