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Home Assistant, ESPHome, BMP280 - temperature and pressure monitoring.

List:

raspberry PI 3 or newer
ESP32
microSD card
sensor BMP280 - temperature, pressure
wires to connect ESP32 with BMP280
cable to power ESP32 micro usb
ethernet cable
wifi dongle
optional case for esp32 and sensor, I've made one - you can look here https://github.com/karcio/stls/blob/main/esp32_sensor_bottom_v1.scad

ZDJECIE RPI3

ESP32

BMP280 sensor

ZDJECIE OBUDOWY

Prepare image HAOS:

download HAOS for your rpi from https://github.com/home-assistant/operating-system/releases/tag/13.0

https://github.com/home-assistant/operating-system/releases/download/13.0/haos_rpi2-13.0.img.xz

unpack image

unxz haos_rpi2-13.0.img.xz

insert sd card to your device and check how your machine recognize it - in mine case it is /dev/mmcbkl0

sudo fdisk -l

flash your sdcard

sudo dd if=Downloads/haos_rpi2-13.0.img  of=/dev/mmcblk0 status=progress bs=1M

First run HA

insert sd card to RPI
connect Ethernet cable
insert WIFI dongle to usb port
connect power to RPI and wait while for HA to run
on your router check your rpi Ip address
in web browser insert rpi Ip address with port 8123, http://your_rpi_ip:8123
first create account

Setup wifi connection on first run:

go to Settings > System > select Network and then wifi tab
in ip4 select automatic
in WI-FI scan network to find your network and insert SSID and password. Save after that
reboot rpi to set up wifi

Instalacja dodatków:

idź do: ustawienia > Add-ons
naciśnij na klawisz dodaj i zainstaluj esphome i File editor
esphome pozwoli podłączyć esp32 płytkę do HA
file editor pozwoli edytować pliki konfiguracyjne HA

Struktura konfiguracyjna HA

configuration.yml
automation.yml
secrets.yml

Przygotowanie płytki ESP32 i podłączenie BMP280

BMP280 ma 6 pinów ale my użyjemy 4 VCC, GRN, SCL, SDA
podłącz piny:
- BMP280 VCC → ESP32 3V
- BMP280 GRN → ESP32 GRN
- BMP280 SCL → ESP32 D22
- BMP280 SDA → ESP32 D21

ZDJECIE PLYTKI Z PODLACZENIEM

Podłączenie esp32 do RPI

podłącz esp32 za pomocą USB do RPI
kliknij w ESPHome w zakładce
kliknij dodaj nowe urządzenie

tak powinno wyglądać ustawienie:

esphome:
  name: esp32-01
  friendly_name: esp32-01

esp32:
  board: esp32dev
  framework:
    type: arduino

# Enable logging
logger:

# Enable Home Assistant API
api:
  encryption:
    key: "xxx"

ota:
  - platform: esphome
    password: "xxx"

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

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Esp32-01 Fallback Hotspot"
    password: "xxx"

captive_portal:

i2c:
  sda: 21
  scl: 22
  scan: True

sensor:
  - platform: bmp280_i2c
    temperature:
      name: "bedroom temperature"
      oversampling: 16x
    pressure:
      name: "bedroom pressure"
    address: 0x76
    update_interval: 60s

a tak wygląda przykładowa automatyzacja, jak temperatura wzrośnie powyżej 25 stopni, lub spadnie poniżej 5 lub 0 - wysłany zostanie email z ostrzeżeniem. Chciałbym tutaj zaznaczyć, że poniższa automatyzacja dotyczy czujnika umieszczonego poza domem. Stąd te niskie wartości temperatury :)

alias: "Temperature"
description: low temperature level
trigger:
  - platform: state
    entity_id:
      - sensor.temperature
    to: null
    for:
      hours: 0
      minutes: 30
      seconds: 0
condition:
  - condition: or
    conditions:
      - condition: numeric_state
        entity_id: sensor.temperature
        above: 25
      - condition: numeric_state
        entity_id: sensor.temperature
        below: 5
      - condition: numeric_state
        entity_id: sensor.temperature
        below: 0
action:
  - data:
      message: "Temperature is: {{ states('sensor.temperature')}} C"
      title: "Warning: temperature is {{ states('sensor.temperature')}} C"
    action: notify.email_notification
mode: single

Dokładna dokumentacja jest tutaj: https://www.home-assistant.io/installation/raspberrypi