gl-s10-esphome-config.yaml

# NOTE! First upload has to be done via UART - seems that OTA is not possible if ESPHome-compiled firmware is just uploaded
# see note at https://esphome.io/components/esp32_ble_tracker.html

esphome:
  name: gls10
  platform: ESP32
  # https://github.com/esphome/issues/issues/1098#issuecomment-845789058
  board: esp32dev
  platformio_options:
    platform: espressif32@3.2.0
    board: az-delivery-devkit-v4
    board_build.mcu: esp32
    board_build.f_cpu: 240000000L

ota:

api:

# nice for debugging, but seems that this generates reboots once in few minutes
# see https://github.com/esphome/issues/issues/2634
# web_server:
#  port: 80

logger:

# uncomment if you want to use wifi
# wifi:
#   ssid: !secret wifissid
#   password: !secret wifipass
#   fast_connect: true
#   power_save_mode: HIGH

# comment out if using wifi - only one can be in use
ethernet:
  type: LAN8720
  mdc_pin: GPIO23
  mdio_pin: GPIO18
  clk_mode: GPIO17_OUT
  phy_addr: 1

esp32_ble_tracker:
  # not sure if necessary but
  # https://github.com/esphome/issues/issues/1098#issuecomment-606784815
  # might be issue when using wifi
  scan_parameters:
    interval: 160ms
    window: 15ms
    duration: 60s

sensor:
  - platform: ruuvitag
    mac_address: AA:FF:DF:BE:AB:FF
    humidity:
      name: "Somesensor Humidity"
    temperature:
      name: "Somesensor Temperature"

Ah, regarding OMG i used that esp32dev-ble.
Working perfectly as well, using wifi.