1 files changed, 172 insertions, 0 deletions

diff --git a/esphome/config/printerswitch.yaml b/esphome/config/printerswitch.yaml
new file mode 100644
index 0000000..55ca307
--- /dev/null
+++ b/esphome/config/printerswitch.yaml
@@ -0,0 +1,172 @@
+substitutions:
+  device_name: printerswitch
+  friendly_name: "Printer Switch"
+  current_resistor: 0.0007978220592127652
+  voltage_divider: 4422.084168336673
+  # max power is 3450W for 15A and 2300W for 10A
+  max_power: "3450"
+
+esphome:
+  name: ${device_name}
+  friendly_name: ${friendly_name}
+
+esp8266:
+  board: esp01_1m
+
+# Enable logging
+logger:
+  # make RXD / TXD available
+  baud_rate: 0
+  level: DEBUG
+
+# Enable Home Assistant API
+api:
+  encryption:
+    key: !secret api_encryption_key
+
+# OTA
+ota:
+  - platform: esphome
+    password: !secret ota_password
+
+# WiFi Credentials
+wifi:
+  domain: .lan
+  ssid: !secret wifi_ssid
+  password: !secret wifi_password
+  # see https://github.com/esphome/issues/issues/1532
+  power_save_mode: HIGH
+
+  # Enable fallback hotspot (captive portal) in case wifi connection fails
+  ap:
+    ssid: "${device_name} Hotspot"
+    password: !secret wifi_ap_password
+
+captive_portal:
+
+binary_sensor:
+  - platform: gpio
+    name: "Button"
+    device_class: power
+    pin:
+      number: GPIO01
+      inverted: true
+    on_press:
+      - switch.toggle: relay
+    internal: true
+
+sensor:
+  - platform: hlw8012
+    model: BL0937
+    sel_pin: GPIO12
+    cf_pin: GPIO04
+    cf1_pin: GPIO05
+    current_resistor: ${current_resistor}
+    voltage_divider: ${voltage_divider}
+    voltage:
+      id: voltage
+      filters:
+        - skip_initial: 2
+    power:
+      id: power
+      internal: true
+      filters:
+        - skip_initial: 2
+      on_value:
+        then:
+          # calculate current through P=U*I
+          - lambda: id(current).publish_state(x / id(voltage).state);
+          # idle power down. <5W
+          - if:
+              condition:
+                for:
+                  time: 5min
+                  condition:
+                    and:
+                      - switch.is_on: relay
+                      - lambda: return id(power).state < 5.0;
+              then:
+                - logger.log: "idle power down"
+                - switch.turn_off: relay
+      on_value_range:
+        - above: ${max_power}
+          then:
+            - switch.turn_off: relay
+    energy:
+      id: energy
+      internal: true
+    update_interval: 1s
+    initial_mode: "VOLTAGE"
+    change_mode_every: never
+
+  - platform: template
+    id: current
+    accuracy_decimals: 3
+    update_interval: never
+    internal: true
+
+    # templates sensors for the ui. we only update the sensor on relay events or through interval
+    # but only if switch is on. this way we don't push updates without changes to frontend
+  - platform: template
+    name: "Current"
+    id: current_ui
+    unit_of_measurement: "A"
+    accuracy_decimals: 3
+    icon: "mdi:flash-outline"
+    update_interval: never
+
+  - platform: template
+    name: "Voltage"
+    id: voltage_ui
+    unit_of_measurement: "V"
+    icon: "mdi:flash-outline"
+    update_interval: never
+
+  - platform: template
+    name: "Power"
+    id: power_ui
+    unit_of_measurement: "W"
+    icon: "mdi:flash-outline"
+    update_interval: never
+
+  - platform: template
+    name: "Energy"
+    id: energy_ui
+    unit_of_measurement: "Wh"
+    icon: "mdi:flash-outline"
+    update_interval: never
+
+switch:
+  - platform: gpio
+    name: "Relay"
+    id: relay
+    pin: GPIO14
+    on_turn_on:
+      - output.turn_on: led
+      - lambda: id(current_ui).publish_state(id(current).state);
+      - lambda: id(voltage_ui).publish_state(id(voltage).state);
+      - lambda: id(power_ui).publish_state(id(power).state);
+      - lambda: id(energy_ui).publish_state(id(energy).state);
+    on_turn_off:
+      - output.turn_off: led
+      - lambda: id(current_ui).publish_state(0.0);
+      - lambda: id(voltage_ui).publish_state(0.0);
+      - lambda: id(power_ui).publish_state(0.0);
+      - lambda: id(energy_ui).publish_state(0.0);
+
+output:
+  - platform: esp8266_pwm
+    id: led
+    pin: GPIO13
+
+interval:
+  - interval: 10s
+    then:
+      - if:
+          condition:
+            switch.is_on: relay
+          then:
+            - lambda: id(current_ui).publish_state(id(current).state);
+            - lambda: id(voltage_ui).publish_state(id(voltage).state);
+            - lambda: id(power_ui).publish_state(id(power).state);
+            - lambda: id(energy_ui).publish_state(id(energy).state);