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
   on_loop:
      - display.page.show: co2

ota:
   safe_mode: true
   password: !secret ota_passwd

wifi:
   ssid: !secret wifi_ssid
   password: !secret wifi_passwd
   ap:
      ssid: co2ampel
      password: ''

captive_portal: null

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: fastled_clockless
      chipset: WS2812B
      pin: GPIO4
      num_leds: 12
      max_refresh_rate: 500ms
      rgb_order: GRB
      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_on:
                           id: ws2812
                           brightness: 80%
                           red: 0%
                           green: 100%
                           blue: 0%
                     -  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: 40%
                                 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%
                                 -  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: 65

display:
   -  platform: ssd1306_i2c
      model: SSD1306 128x64
      address: 60
      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;
               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);