co2ampel/co2sensor.yaml

substitutions:
  node_name: !env_var co2ampel 

esphome:
    name: co2ampel_${node_name}
    platform: ESP32
    board: esp32doit-devkit-v1 
    on_boot:
               - display.page.show: boot
# manually define needed libs to avoid broken NeoPixelBus-esphome@2.5.7 (we use the upstream version 2.6.0 instead)
    platformio_options:
        lib_deps: NeoPixelBus@2.6.0, AsyncTCP-esphome, ESPAsyncTCP-esphome, AsyncTCP-esphome, AsyncMqttClient-esphome, ESPAsyncTCP-esphome, AsyncTCP-esphome, ArduinoJson-esphomelib@5.13.3, ESPAsyncWebServer-esphome


ota:
  safe_mode: True
  password: !secret ota_passwd 


logger:
    level: DEBUG
wifi:
    ssid: !secret wifi_ssid
    password: !secret wifi_passwd
    ap:
     ssid: "co2ampel"
     password: ""
captive_portal:
mqtt:
  broker: co2.cyber23.de
  topic_prefix: co2ampel/${node_name}
  birth_message:
    topic: co2ampel/${node_name}/status
    payload: online
  will_message:
   topic: co2ampel/${node_name}/status
   payload: offline

uart:
  rx_pin: GPIO16 
  tx_pin: GPIO17
  baud_rate: 9600
  id: uart_mhz19

light:
  - platform: neopixelbus
    pin: GPIO4
    num_leds: 12
    name: "ws2812 ring"
    id: "ws2812"
    restore_mode: ALWAYS_OFF

output:
  - platform: ledc
    pin: GPIO12
    id: buzzer

sensor:
  - platform: mhz19
    update_interval: 10s
    automatic_baseline_calibration: true 
    uart_id: uart_mhz19
    temperature:
      name: ${node_name} Temperature
      id: mhz19_temp
    co2:
      name: ${node_name} PPM
      id: mhz19_co2
      on_value:
       then:
          if:
           condition:
                 sensor.in_range:
                  id: mhz19_co2 
                  above: 0
                  below: 800
           then:
            - light.turn_off:
               id: ws2812
            - display.page.show: co2
           else:
                if:
                 condition:
                  sensor.in_range:
                   id: mhz19_co2
                   above: 800
                   below: 1000
                 then:
                     - light.turn_on:
                        id: ws2812
                        brightness: 80%
                        red: 50%
                        green: 50%
                        blue: 0%
                     - display.page.show: co2
                 else:
                         if:
                                 condition:
                                         sensor.in_range:
                                                 id: mhz19_co2
                                                 above: 1000
                                 then:
                                         - light.turn_on:
                                                 id: ws2812
                                                 brightness: 100%
                                                 red: 100%
                                                 green: 0%
                                                 blue: 0%
                                       # - output.turn_on: buzzer
                                       # - output.ledc.set_frequency:
                                       #    id: buzzer
                                       #    frequency: "5000Hz"
                                       # - output.set_level:
                                       #    id: buzzer
                                       #    level: "20%"
                                       # - delay: 10ms
                                       # - output.turn_off: buzzer
                                         - delay: 500ms
                                         - light.toggle: ws2812
                                         - delay: 500ms
                                         - light.toggle: ws2812
                                         - delay: 500ms
                                         - light.toggle: ws2812
                                         - delay: 500ms
                                         - light.toggle: ws2812
                                         - lambda: |-
                                            static int num_executions = 0;
                                            ESP_LOGD("main", "I am at execution number %d", num_executions);
                                            num_executions += 1;
                                         - display.page.show: co2   
i2c:
  sda: GPIO21 
  scl: GPIO22

font:
  - file: "font.ttf"
    id: cust_font
    size: 70

display:
  - platform: ssd1306_i2c
    model: "SSD1306 128x64"
    address: 0x3C
    brightness: 100%
    update_interval: 10s
    pages:
            - id: boot
              lambda: |-
                      it.printf(64, 0, id(cust_font), COLOR_ON, TextAlign::TOP_CENTER, ":-)");
            - id: co2
              lambda: |-
               int ergb;
               ergb = id(mhz19_co2).state/100;
               it.printf(64, 0, id(cust_font), COLOR_ON, TextAlign::TOP_CENTER, "%.0i", ergb);
#               it.printf(64, 16, id(cust_font), COLOR_ON, TextAlign::TOP_CENTER, "%.0fPPM", id(mhz19_co2).state);
#            it.printf(64, 40, id(cust_font),TextAlign::TOP_CENTER, "%.0f°C", id(mhz19_temp).state);