Esphome: hallsensor on ESP8266

ESPHome
1

hello,

i ve a external analog hall sensor
image

how can i use it with esphome?
i had try this:

sensor:
  - platform: esp32_hall
    pin: 2
    name: "ESPhome_Gaszaehler"
    unit_of_measurement: 'm^3'

but dont work

INFO Reading configuration /config/esphome/gaszaehler.yaml...
Failed config

sensor.esp32_hall: [source /config/esphome/gaszaehler.yaml:19]
  
  Component sensor.esp32_hall doesn't support ESP8266
2

Post your complete ESPHome YAML source file. If you’re attempting to use an ESP8266 device, apparently the platform ESP32_hall won’t work. Try with an ESP32 device, instead.

1 Like
3

Searching a bit more, you may not be able to use that particular device. :frowning:

The KY-003 hall sensor module is based on the 3144EUA-S hall-effect sensor and has a higher operation voltage between 4.5V and 24V. Therefore the KY-003 module can be connected to an Arduino, but not to an ESP8266 or ESP32 microcontroller board because the operation voltage of 3.3V is too low. The KY-003 is smaller in size because there is only a digital output signal from the sensor module.

1 Like
4

i havent a ESP32. i ve only the ESP8266 with a external sensor.

it seems, that esphome have no solution for me. thx

5

i ve a KY-035

6

Hard to know how this got past you

The esp32_hall sensor platform allows you to use the integrated hall effect sensor of the ESP32 chip to measure the magnitude and direction of magnetic field around the chip

7

I think the ky-035 should be able to be used with the adc pin.

8

i had try it, but i see no value changes if a add a magnet in the near of the hall sensor…

esphome:
  name: gaszaehler
  platform: ESP8266
  board: nodemcuv2

wifi:
    ssid: "my_ssid"
    password: "my_pass"
    manual_ip:
        static_ip: 192.168.1.112
        gateway: 192.168.1.1
        subnet: 255.255.255.0
        dns1: 192.168.1.1
    ap:
      ssid: "Gaszaehler Fallback Hotspot"
      password: "my_pass"
    
sensor:
  - platform: adc
    pin: A0
    name: "ESPhome_Gaszaehler"
    unit_of_measurement: 'm^3'



api:
    password: "my_pass"
    
ota:
    password: "my_pass"
    
logger:
  level: DEBUG
9

I know this topic is super old, but replying to help someone who lands here looking for a solution.

I have the exact same Hall sensor - KY-003. Few things to note
Its Operating voltage is 4.5V…24V and the Output is Digital therefore won’t work as platform: adc

Mine is hooked up to a Sonoff SV which is an ESP8266-based relay. I configured it as a binary sensor i.e. something that tells me if its ON or OFF

binary_sensor:
  - platform: gpio
    pin:
      number: GPIO14
      mode: INPUT_PULLUP
      inverted: True
    name: "Door State"

and this is how my cables are connected
Red circle is the Vcc ( since the minimum Voltage req is 4.5, this pin works best )
Green circle is the Gnd
Blue circle is a Signal
sonoff_sv

these is the corresponding connectors on KY-003
ky-003-hall-sensor

Hope this helps someone.

5 Likes
10

Thanks @rahulvij , I found this when trying to setup an M5Stack Hall Effect Sensor (A3144E).
That’s worked brilliantly for me too, on my M5Stack Atom Lite.
Had to leave a comment in case someone else is trying to setup the A3144E with ESPHome, though I tweaked it a little further when I realized I could specify device_class etc :slight_smile:

# A3144E, magnet over the "I" or "GND"
binary_sensor:
  - platform: gpio
    pin:
      number: 32
      mode: INPUT_PULLUP
      inverted: true
    name: "Second Door"
    id: "second_door"
    on_press:
    - logger.log: "Door closed"
    icon: "mdi:magnet-on"
    device_class: door
11

Hello, I could get my KY-003 up and running on a ESP8266 d1 mini clone with these information.
Thanks for sharing!

IMG_20230310_124018_edit_868208546666476
IMG_20230310_124018_edit_8682085466664761920Ă—1147 96.7 KB

Regards
Christoph

1 Like
12

Wrong, wrong, wrong. If you can’t help someone or don’t know what your talking about then don’t post wrong information and tell people it’s not possible or they need a different esp board. You can absolutely use the ky-003 or any of them. First, you just need to look at the data sheet, that needs to be your first stop always. This is a digital sensor and doesn’t output an analog signal so it only outputs High/Low. If you don’t know how to use a 4.5v or higher sensor voltage, you asking for help and not giving wrong help. A simple transistor or logic level converter is all they needed to make this work with an esp8266.

13

Apparently the esp32_hall doesn’t work with an 8266? Ya think?

15

Hey Christoph,

Can you share your Code?
I’m on the same thing right now trying to get this to work.