Arduino Stack Exchange
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Questions tagged [hall-effect]

The production of a potential difference across an electrical conductor when a magnetic field is applied in a direction perpendicular to that of the flow of current.

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5v hall current sensor with a 3v3 mcu

current sensor (5v) with a 3.3v MCU I am trying to make a hall effect current sensor (ACS712ELCTR-20A-T) work with a 3.3v MCU. The current sensor is powered with 5v. I specifically choose this sensor because I need to measure current up to 7A…
Musa
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How to input delay and increase volume measurements with hall sensor detection

I'm writing code so that, every time a hall monitor senses, my code additively measures 5 liters of volume as it prints each detection. Then, this data is sent via Bluetooth to a phone. (This is for a tipping bucket device that distributes 5 liters…
Anne Murray
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Controlling a stepper using PIR and Hall effect sensor

I'm trying to make a box that revolves around a pivot point using a NEMA17 stepper motor. The idea is straightforward: US1881 Hall effect sensor will change state based on magnets on the base of the box acting as an end stop, when the PIR sensor…
MDChaara
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Wind speed measuring using Hall sensor

Hi! I require your help regarding a problem I’m encountering. I am trying to measure wind speed using Hall sensor, Neodymium magnet & below mentioned code. But I only get “0” value for both RPM & KPH values. Can you help me to solve this? volatile…
Janith Chamalka
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stop motor instantaneous with hall sensor problem

I have a problem with stopping motor at same spot when magnet pass.. I tried to add interrupt and to make code as clean as possible but no joy so far. Any suggestions? sw will add later, just ignore.. byte outPin = 12; // the number of the…
Milos
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Hall Sensor (Fluid Flow) "Noise"

Kind of a fringe question here, but could not find anything concrete so figured I would throw it to this great community. I have 2 DS80 flow meters (Hall Effect Sensor type flow meters - nothing special about them except they are bigger for 3"…
charrold303
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Why do my Hall sensor readings change when I write them to the serial port?

I have a small project where I connected a Hall sensor (see picture) to an Arduino Mega. The blue wire is connected to pin 45, the red wire to +5V, and the black wire to GND. At the beginning I initialize the pin used to read the sensor as…
xoric
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What is the difference between a Hall effect sensor and an inductive one?

From what I have read, when placed within a magnetic field, a current will flow in both sensors. My goal is to use this kind of sensors to guide a robot thanks to an existing automower loop wire, such as suggested in DIY Perimeter Wire Generator and…
floflo29
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How to get started with writing code for a Hall Effect sensor?

One of my biggest questions concerns coding a Hall effect sensor to find wheel speed with an arduino mega. I’ve got an lcd in digital pins(7,8,9,10,11,12) and a Hall effect sensor in digital pin 2. I just have no idea how to code the actual rpm…
Aarav Shah
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Wind speed measuring using Hall effect Anemometer

I need your help regarding a problem I am facing while measuring wind speed. In my sketch I get a reading every 20 counts which the magnet goes past the sensor. I need to change it in order to get a reading every 20 seconds. How can I do it with…
Janith Chamalka
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Unable to get readings for "Motor with Encoder"

I've posted to the DFRobot forum, who makes the FIT0186 motors, but no one seems to be replying there. So, excuse the copy pasting. It's probably an issue with the motor/encoder, but perhaps it has to do with the arduino. I'm using a Nano, and a…
djb
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Speed control of BLDC with an integrated controller (Hall out, PWM in)

I am aiming at precise speed control of this BLDC motor: it has an integrated controller, outputting digital Hall signal (period 20.8ms on oscilloscope, w/o load) and taking PWM as input for speed regulation. As far as my knowledge goes, this is a…
eudoxos
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choosing prober controller to measure engin speed changes

In order to monitor engine speed changes in real time, sensor is detecting the motion of few magnets around a disk driven by the motor. 1st approach Hall effect sensor signal is regulated by LM393 comparative IC, resulting digital clean signal,…
Hamed
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Why voltage drop cause changes in analog reading of hall-effect sensor?

The sensor is a hall-effect UGN3503 sensor and I'm using a TL431 shunt regulator as voltage reference for analog readings. I'm using analogRead() with setting the analog reference to external analogReference(EXTERNAL);. schematic: simulate this…
ElectronSurf
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