Same thing here. Using ESPHome almost identical config from the tutorial except for my wifi secrets.

If anyone is interested here is the ESPHome config I arrived on:

substitutions:
  name: "vindriktning_01"
  friendly_name: "vindriktning 01"
  project_name: "ikea.vindriktning-sensor"

ota:
  password: !secret freindly_password

wifi:
    ssid: !secret wifi_ssid
    password: !secret wifi_password

    # Enable fallback hotspot (captive portal) in case wifi connection fails
    ap:
      ssid: "Ikea-Vindriktning-01"
      password: !secret freindly_password
      ap_timeout: 30s

esphome:
    name: "${name}"
    project:
          name: "${project_name}"
          version: "1.0"

esp8266:
  board: esp01_1m

# Enable logging
logger:
  baud_rate: 0

# Enable Home Assistant API
api:

uart:
  rx_pin: GPIO2
  baud_rate: 9600

sensor:
  - platform: pm1006
    pm_2_5:
      name: "Particulate Matter 2.5µm Concentration"

web_server:
    port: 80
    local: true