Ofensteuerung v1.0: Wemos-Platine 100x100 mit Pumpenrelais 230 V, Thermostat parallel, Strommessung ZMCT103C/ADS1115, MAX6675 Abgas, 3x DS18B20, Servo MG996R, PWM-Pumpe; 2-stufiges Freerouting, ESPHome-Konfig

esphome/ofensteuerung.yaml

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+# Ofensteuerung auf der Platine pcb/ (v1.0)
+#   D0/GPIO16 Relais K1 (230-V-Pumpe, Schließer)  - Thermostat an J4 liegt parallel zum Kontakt
+#   D1/GPIO5 SCL, D2/GPIO4 SDA -> ADS1115 (0x48): A0-A1 = Stromwandler ZMCT103C (Bürde 100 R, Mitte 1,65 V)
+#   D5/GPIO14 SCK, D6/GPIO12 SO, D8/GPIO15 CS -> MAX6675 (Abgas, Thermoelement Typ K)
+#   D4/GPIO2  1-Wire, 3x DS18B20 (J5-J7, 4k7 Pull-up)
+#   D3/GPIO0  Servo MG996R (Luftklappe, 330 R in Serie)
+#   D7/GPIO13 PWM-Pumpe (Transistorstufe wie Umwälzpumpe), RX/GPIO3 Rückmeldung
+#   frei auf J10: A0, TX/GPIO1, ADS1115 A2/A3
+substitutions:
+  name: ofensteuerung
+
+esphome:
+  name: ${name}
+  friendly_name: Ofensteuerung
+
+esp8266:
+  board: d1_mini
+  restore_from_flash: true
+
+logger:
+  level: INFO
+  baud_rate: 0               # RX/GPIO3 = Rückmeldung PWM-Pumpe
+
+wifi:
+  ssid: !secret wifi_ssid
+  password: !secret wifi_password
+  reboot_timeout: 15min
+  ap:
+    ssid: "Ofensteuerung Fallback"
+
+captive_portal:
+
+api:
+  reboot_timeout: 0s
+  encryption:
+    key: !secret api_key
+
+mqtt:
+  broker: 192.168.179.24
+  port: 1883
+  username: ramiro
+  password: !secret mqtt_password
+  topic_prefix: gunter/ofensteuerung
+  reboot_timeout: 0s
+  discovery: true
+  log_topic: null
+  birth_message:
+    topic: gunter/ofensteuerung/status
+    payload: online
+  will_message:
+    topic: gunter/ofensteuerung/status
+    payload: offline
+
+ota:
+  - platform: esphome
+    password: !secret ota_password
+
+web_server:
+  port: 80
+
+i2c:
+  sda: GPIO4                 # D2
+  scl: GPIO5                 # D1
+  scan: true
+  frequency: 400kHz
+
+spi:
+  clk_pin: GPIO14            # D5
+  miso_pin: GPIO12           # D6
+
+one_wire:
+  - platform: gpio
+    pin: GPIO2               # D4
+
+ads1115:
+  - address: 0x48
+    continuous_mode: true
+
+# ---------------- Pumpe 230 V ----------------
+switch:
+  - platform: gpio
+    pin: GPIO16              # D0 -> BC546B -> K1
+    name: "Pumpe Relais"
+    id: pumpe_relais
+    restore_mode: RESTORE_DEFAULT_OFF
+    icon: mdi:pump
+
+# ---------------- Luftklappe (Servo MG996R) ----------------
+output:
+  - platform: esp8266_pwm
+    id: klappe_pwm
+    pin: GPIO0               # D3 (Boot-Pin, Servo-Eingang ist hochohmig)
+    frequency: 50 Hz
+  - platform: esp8266_pwm
+    id: pump_pwm
+    pin: GPIO13              # D7
+    frequency: 1000 Hz
+    inverted: false          # Stufe invertiert: Klemmen-Duty = 1 - power (VTS/AMG Profil H)
+    min_power: 0.16
+    max_power: 0.93
+    zero_means_zero: true
+
+servo:
+  - id: klappe_servo
+    output: klappe_pwm
+    min_level: 3%            # ~0,6 ms  -> ggf. an Klappenanschlag anpassen
+    max_level: 12%           # ~2,4 ms
+    transition_length: 4s
+    auto_detach_time: 3s     # danach kein Haltestrom/Brummen; Klappe hält per Getriebe
+
+number:
+  - platform: template
+    name: "Luftklappe"
+    id: luftklappe
+    unit_of_measurement: "%"
+    min_value: 0
+    max_value: 100
+    step: 1
+    optimistic: true
+    restore_value: true
+    initial_value: 50
+    icon: mdi:valve
+    set_action:
+      - servo.write:
+          id: klappe_servo
+          level: !lambda 'return x / 50.0f - 1.0f;'   # 0..100 % -> -1..+1
+
+# ---------------- PWM-Pumpe (optional) ----------------
+fan:
+  - platform: speed
+    output: pump_pwm
+    name: "PWM-Pumpe"
+    id: pwm_pumpe
+    restore_mode: RESTORE_DEFAULT_ON
+
+sensor:
+  # Pumpenstrom über ZMCT103C: 1 A primär = 1 mA sekundär = 100 mV an der Bürde
+  - platform: ads1115
+    multiplexer: A0_A1
+    gain: 0.256              # +-256 mV -> bis ca. 1,8 A eff.
+    id: ct_spannung
+    sample_rate: 860
+    update_interval: never
+    internal: true
+  - platform: ct_clamp
+    sensor: ct_spannung
+    name: "Pumpe Strom"
+    id: pumpe_strom
+    sample_duration: 400ms
+    update_interval: 5s
+    unit_of_measurement: A
+    accuracy_decimals: 3
+    filters:
+      - multiply: 10.0       # V an 100 R -> A primär
+      - lambda: 'return x < 0.015f ? 0.0f : x;'
+  - platform: template
+    name: "Pumpe Leistung (ca.)"
+    unit_of_measurement: W
+    device_class: power
+    accuracy_decimals: 0
+    update_interval: 5s
+    lambda: 'return id(pumpe_strom).state * 230.0f * 0.9f;'   # Schein -> grob Wirkleistung (cos phi ~0,9 schätzen)
+
+  - platform: max6675
+    cs_pin: GPIO15           # D8 (10k Pull-down auf der Platine)
+    name: "Abgastemperatur"
+    id: abgas
+    update_interval: 5s
+    filters:
+      - sliding_window_moving_average: {window_size: 3, send_every: 1}
+
+  # DS18B20 an J5/J6/J7 (ein Bus). Nach dem ersten Start die Adressen aus dem Log eintragen
+  # und index durch address: 0x... ersetzen, sonst können die Fühler die Reihenfolge tauschen.
+  - platform: dallas_temp
+    name: "Temperatur 1"
+    index: 0
+    update_interval: 10s
+  - platform: dallas_temp
+    name: "Temperatur 2"
+    index: 1
+    update_interval: 10s
+  - platform: dallas_temp
+    name: "Temperatur 3"
+    index: 2
+    update_interval: 10s
+
+  - platform: duty_cycle
+    pin:
+      number: GPIO3          # RX
+      mode: INPUT
+    name: "PWM-Pumpe Rückmeldung"
+    update_interval: 5s
+    accuracy_decimals: 0
+
+  - platform: wifi_signal
+    name: "WLAN Signal"
+    update_interval: 60s
+  - platform: uptime
+    name: "Uptime"
+
+binary_sensor:
+  - platform: template
+    name: "Pumpe läuft"
+    device_class: running
+    lambda: 'return id(pumpe_strom).state > 0.03f;'
+  - platform: template
+    name: "Pumpe läuft über Thermostat"
+    lambda: 'return id(pumpe_strom).state > 0.03f && !id(pumpe_relais).state;'
+  - platform: template
+    name: "Pumpe Störung"          # Relais an, aber kein Strom (Sicherung, Pumpe, Kabel)
+    device_class: problem
+    lambda: 'return id(pumpe_relais).state && id(pumpe_strom).state < 0.03f;'
+    filters:
+      - delayed_on: 20s
+  - platform: status
+    name: "Status"

esphome/secrets.example.yaml

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+wifi_ssid: "IOT"
+wifi_password: "..."
+api_key: "..."        # 32 Byte base64: head -c32 /dev/urandom | base64
+ota_password: "..."
+mqtt_password: "..."