wemos_d1_pzem016_display.yaml

esphome:
  name: wemos_d1_pzem016_display
  platform: ESP8266
  board: d1_mini
  # esp8266_restore_from_flash: true
  on_boot:
    priority: -100.0
    then:
      - lambda: id(disp).publish_state(true); # at boot always start display

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_pw

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Wemos D1 Ingresso"
    password: "RSixraswZ4Vk"

captive_portal:

# Enable logging
logger:
  level: DEBUG
  baud_rate: 0 # MESSO A 0 disabilita logger UART (usata per PZEM)

# Enable Home Assistant API
api:

ota:

time:
  - platform: sntp
    id: my_time

uart: # E' una serial software (SI POSSONO USARE ANCHE I PIN DELLA HARDWARE)
  rx_pin: GPIO3 # ERA D5
  tx_pin: GPIO1 # ERA D6
  baud_rate: 9600
  stop_bits: 1
  
i2c:
  sda: D2
  scl: D1  

binary_sensor:
  - platform: template
    name: "display on"
    id: disp
    internal: true  
    on_press:
      then:
        - delay: 30s # if sw2 is off display always turn off after 30s
        - lambda: |
            if (id(sw2).state)  
              {
                id(disp).publish_state(true);
              } 
            else 
              {
                id(disp).publish_state(false);
              }

  - platform: homeassistant
    name: "Caldaia ON"
    entity_id: binary_sensor.termostato_heating
    internal: true
    id: caldaia

sensor:

################################################################################
#           Fast sensors for Energy calculation & local display                #
################################################################################

  - platform: pzemac
    current:
      name: "PZEM-016 Current"
      id: aac
      internal: true
    voltage:
      name: "PZEM-016 Voltage"
      id: vac
      internal: true
    power:
      name: "PZEM-016 Power"
      id: w
      internal: true
    frequency:
      name: "PZEM-016 Frequency"
      id: f
      internal: true
    power_factor:
      name: "PZEM-016 Power Factor"
      id: pf
      internal: true
    update_interval: 2s

  - platform: total_daily_energy
    name: "PZEM-016 Daily Energy"
    power_id: w 
    filters:
        # Multiplication factor from W to kW is 0.001
      - multiply: 0.001
    unit_of_measurement: kWh
    icon: mdi:counter
    accuracy_decimals: 1   

################################################################################
#                         Slow sensors for Home assistant                      #
################################################################################

  - platform: template #########################
    name: "PZEM-016 Current Slow"
    lambda: |-
      if (id(aac).state) {
        return (id(aac).state);
      } else {
        return 0;
      }
    unit_of_measurement: A
    icon: "mdi:alpha-a-circle"
    update_interval: 10s
  
  - platform: template #########################
    name: "PZEM-016 Voltage Slow"
    lambda: |-
      if (id(vac).state) {
        return (id(vac).state);
      } else {
        return 0;
      }
    unit_of_measurement: V
    icon: "mdi:alpha-v-circle"
    update_interval: 10s
  
  - platform: template #########################
    name: "PZEM-016 Power Slow"
    lambda: |-
      if (id(w).state) {
        return (id(w).state);
      } else {
        return 0;
      }
    unit_of_measurement: W 
    icon: "mdi:alpha-w-circle"
    update_interval: 10s
  
  - platform: template #########################
    name: "PZEM-016 Frequency Slow"
    lambda: |-
      if (id(f).state) {
        return (id(f).state);
      } else {
        return 0;
      }
    unit_of_measurement: Hz
    icon: "mdi:alpha-f-circle"
    update_interval: 10s

  - platform: template #########################
    name: "PZEM-016 Power Factor Slow"
    lambda: |-
      if (id(pf).state) {
        return (id(pf).state);
      } else {
        return 0;
      }
    unit_of_measurement: PF
    icon: "mdi:alpha-p-circle"
    update_interval: 10s

switch:
  - platform: gpio
    id: sw1
    pin: D5 # orange wire --> B out
    name: "Out B"
  - platform: gpio
    id: sw2
    pin: D6 # blue wire --> A out
    name: "Out A" 
    on_turn_on:
      then:
        - lambda: id(disp).publish_state(true);
    on_turn_off:
      then:
        - lambda: id(disp).publish_state(false);     

font:
  - file: "Roboto-Regular.ttf"
    id: my_font
    size: 20  
  - file: "Roboto-Regular.ttf"
    id: my_font_15
    size: 15    
    
display:
  - platform: ssd1306_i2c
    model: "SSD1306 128x64"
#    reset_pin: D0
    address: 0x3C
    lambda: |-
      if ( (id(vac).has_state())&&(id(disp).state) ) 
      {
        it.printf(0, 4, id(my_font), TextAlign::TOP_LEFT , "%.1fV", id(vac).state);
      }
      
      if ( (id(pf).has_state())&&(id(disp).state) )  
      {
        it.printf(128, 4, id(my_font), TextAlign::TOP_RIGHT , "%.2fp", id(pf).state);
      }  
      
      if ( (id(w).has_state())&&(id(disp).state) )  
      {
        it.printf(0, 40, id(my_font), TextAlign::CENTER_LEFT , "%.0fW", id(w).state);
      }      
      
      if ( (id(caldaia).state)&&(id(disp).state) )  
      {
        it.print(128, 40, id(my_font), TextAlign::CENTER_RIGHT , "C");
      }