ESPHome config for ESP32 DHT11 + soil moisture sensor (like https://nl.aliexpress.com/item/1005003192739181.html)

sensor.yaml

esphome:
  name: plantsensor

esp32:
  board: esp32dev
  framework:
    type: arduino

# Enable logging
logger:
  level: NONE

# Enable Home Assistant API
api:
  password: ""

ota:
  password: ""

wifi:
  ssid: "<ssid>"
  password: "<password>"

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Plantsensor Fallback Hotspot"
    password: "<hotspot password>"

captive_portal:
    
web_server:
  port: 80

mqtt:
  broker: <mqtt broker host>
  birth_message:
  will_message:

sensor:
  - platform: dht
    pin: GPIO22
    temperature:
      name: "Air temperature"
    humidity:
      name: "Air humidity"
    update_interval: 8s
  - platform: adc
    pin: GPIO32
    name: "Soil Moisture"
    update_interval: 60s
    unit_of_measurement: "%"
    attenuation: auto
    filters:
    - calibrate_linear:
        - 1.46 -> 100.00
        - 2.85 -> 0.00
    - lambda: |
        if (x < 0) return 0; 
        else if (x > 100) return 100;
        else return (x);
    accuracy_decimals: 0

deep_sleep:
  run_duration: 5s
  sleep_duration: 5min