Wind direction visualization

ESPHome
1

Hello,
I have an analog wind direction sensor that has an output of 0 - 5 V for 360° representing the position of the arrow from the north pole. Which is actually 5V divided by 8 resistor values giving me the output voltage value for each azimuth.
But those wind sensor azimuth is actually the opposite of the wind flow…

Aluminum-wind-direction-sensor
Aluminum-wind-direction-sensor600×600 10.2 KB

When it has the arrow toward the North [0°] it is meaning that the wind is flowing from the north to the south. So opposite is what is needed to visualize.
Arrow into 45° > meaning the wind going towards 225 ° > SW .

Or how do you visualize that arrow of the wind direction? Because if I will make it the same as the compass then it will be confusing…

Please anyone can you share your solution ?

2

Like this:

Screenshot_20230213_142654_Home Assistant
Screenshot_20230213_142654_Home Assistant1080×633 34.7 KB 

  - type: custom:compass-card
    header:
      title:
        value: Wind
    indicator_sensors:
      - sensor: sensor.ksat_wind_direction
        indicator:
          type: arrow_inward
    value_sensors:
      - sensor: sensor.ksat_wind_speed
    compass:
      north:
        show: true
        offset: 20

Where the wind is coming from…

1 Like
3

Use a lambda filter on your sensor to calculate the inverse angle:

filters:
  - lambda: return (x + 180) % 360;
unit_of_measurement: "degrees"

If you want to display in HA - an example is given above. For display on an attached display there are some examples about - let me know and I’ll point you to one.

4

I didn´t make research on the problem before i ordered the sensor.
But because resistance is not raising linear to easily calculate the angle because it is changing voltage in steps represents ± 50 - 55°… so i had to correct them by some if conditions to the real comass stažený soubor

  - platform: ads1115
    multiplexer: 'A3_GND'
    gain: 6.144
    name: "ADC_3"
    id: A3_GND
    update_interval: 5s
    filters:   
     - lambda: |-
        if( (x * (360.0/5.0)) >= 10.0 &&  (x * (360.0/5.0)) <= 70.0  ) return x = 45;
        if( (x * (360.0/5.0)) > 70.0 &&  (x * (360.0/5.0)) <= 120.0  ) return x = 90;
        if( (x * (360.0/5.0)) > 120.0 &&  (x * (360.0/5.0)) <= 170.0  ) return x = 135;
        if( (x * (360.0/5.0)) > 170.0 &&  (x * (360.0/5.0)) <= 215.0  ) return x = 180;
        if( (x * (360.0/5.0)) > 215.0 &&  (x * (360.0/5.0)) <= 262.0  ) return x = 225;
        if( (x * (360.0/5.0)) > 262.0 &&  (x * (360.0/5.0)) <= 330.0  ) return x = 270;
        if( (x * (360.0/5.0)) > 330.0 &&  (x * (360.0/5.0)) <= 355.0  ) return x = 315;
        if(((x * (360.0/5.0)) > 355.0 &&  (x * (360.0/5.0)) <= 360.0) || ((x * (360.0/5.0)) >= 0.0 &&  (x * (360.0/5.0)) <= 10.0)) return x = 0;

I am not a good coder so I am using usually hard invented solution which is possible to do simpler, but it works :smiley:

And yes I will be glad if you will help me with the visual solution.

Bdw question 2, the best way to store those data into influxdb ? I am planing to make grafana dashboards as my primary source data from the sensors what i am creating now.

When will use something like this:
InfluxDB2 custom component for ESPHome

Can i control for example write temperatures every 10 minutes, and and wind speed every minute ?
Or what is the best metod to store wind related data ? Some avarage / and maximum values every 10 min ?

5

You don’t have a supervised install? Because if you do influxDB and Grafana are standard add-ons.

6

No, I have everything like separate docker containers.

7

After all research, pros, and cons I decided to keep the original approach and visualize that original sensor output. Thank for the compass hint.