Blitzwolf BW-SHP7 Double socket with powermonitoring

Model reference: BW-SHP7

Manufacturer: BlitzWolf

GPIO Pinout

Pin	Function
GPIO00	Button1 (pullup, inverted)
GPIO12	Button2 (pullup, inverted)
GPIO13	Red LED1(inverted)
GPIO02	Red LED2(inverted)
GPIO14	Relay1
GPIO16	Relay2
GPIO01	Blue LED (inverted)
GPIO03	HLW8012 - SEL
GPIO04	HLW8012 - CF
GPIO05	HLW8012 - CF1

Basic Config

The configuration has some default sensors for wifi reporting etc. Some SHP7 devices experiences unexpected reboots after few minutes from start. By adding some config for GPIO15 it is solved.

substitutions:
  device_name: shp7
  # Higher value gives lower watt readout
  current_res: '0.002291'
  # Lower value gives lower voltage readout
  voltage_div: '940'
  # BW-SHP7, dual outlet with powermonitoring.
  # One button for each relay, and one red led for each relay, as well as a blue status led
  # Static IP is configured, and fast_connect is enabled, as the SSID is hidden
  # Webserver is active and pw protected, and the OTA is password protected

esphome:
  name: '${device_name}'

esp8266:
  board: esp8285

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  ap:

logger:
  baud_rate: 0

api:

ota:
  password: !secret otapw

# Button configuration
binary_sensor:
  - platform: gpio
    id: button1
    name: button1
    internal: true
    pin:
      number: GPIO0
      mode: INPUT_PULLUP
      inverted: true
    on_press:
      - switch.toggle: relay1
  - platform: gpio
    id: button2
    name: button2
    internal: true
    pin:
      number: GPIO12
      mode: INPUT_PULLUP
      inverted: true
    on_press:
      - switch.toggle: relay2
  - platform: gpio
    pin: GPIO15
    id: gpio15_irq
    internal: true

# Setup of LED's used in displaying LED status
output:
   - platform: esp8266_pwm
     id: led1
     pin:
       number: GPIO13
       inverted: true
   - platform: esp8266_pwm
     id: led2
     pin:
       number: GPIO2
       inverted: true

# Config for switches
switch:
  - platform: gpio
    pin: GPIO14
    id: relay1
    name: 'relay1'
    on_turn_on:
      - output.turn_on: led1
    on_turn_off:
      - output.turn_off: led1
  - platform: gpio
    pin: GPIO16
    id: relay2
    name: 'relay2'
    on_turn_on:
      - output.turn_on: led2
    on_turn_off:
      - output.turn_off: led2

# Status LED for connection
status_led:
  pin:
    number: GPIO01
    inverted: true

# Sensors for WIFI signal strength, Uptime, Voltage, Current, Power, Daily energy usage
sensor:
  - platform: hlw8012
    sel_pin:
      number: GPIO03
      inverted: true
    cf_pin: GPIO04
    cf1_pin: GPIO05
    current_resistor: ${current_res}
    voltage_divider: ${voltage_div}
    current:
      name: '${device_name} current'
      unit_of_measurement: 'A'
      accuracy_decimals: 3
      icon: mdi:flash-outline
    voltage:
      name: '${device_name} voltage'
      unit_of_measurement: 'V'
      icon: mdi:flash-outline
    power:
      name: '${device_name} power'
      unit_of_measurement: 'kW'
      id: power
      accuracy_decimals: 3
      filters:
        - multiply: 0.001
      icon: mdi:flash-outline
    change_mode_every: 4
    update_interval: 10s
  - platform: total_daily_energy
    name: '${device_name} daily energy'
    power_id: power
    unit_of_measurement: kWh
    accuracy_decimals: 5

Advanced config additions

Starting with ESPHome v1.16.1 the hlw8012 platform sensor now supports energy, so we can add the following to the hlw8012 platform sensor and get rid of the total_daily_energy platform sensor and the homeassistant time sensor:

sensor:
  - platform: hlw8012
    energy:
      name: "${device_name} Energy"
      unit_of_measurement: "Wh"
      icon: mdi:flash-outline

In the esphome section, you can perform actions when the device boots:

  on_boot:
    then:
      - switch.turn_on: relay1
#  - switch.turn_on: relay2

Under wifi this can be added, this will set up static IP, allow the device to connect to a hidden SSID (fast_connect) and create a backup AP

wifi:
  reboot_timeout: 60min
  manual_ip:
    static_ip: 192.168.1.100
    gateway: 192.168.1.1
    subnet: 255.255.255.0
  fast_connect: true

# Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "${device_name} Hotspot"
    password: !secret appw

This wll activate the internal webserver with password protection

web_server:
  port: 80
  auth:
    username: !secret webuser
    password: !secret webpw

To set time locally to the same as on the HomeAssistant (better logging)

# Sets time from Homeassistant
time:
  - platform: homeassistant
    id: homeassistant_time

To have different data shown for the device (ESPHome version) and the wifi. Will appear as sensors in HA.

# Sensors for ESP version and WIFI information
text_sensor:
  - platform: version
    name: "${device_name} ESPHome Version"
  - platform: wifi_info
    ip_address:
      name: "${device_name} ip"
    ssid:
      name: "${device_name} ssid"

This will create sensors so that you can track wifi coverage for the devices, and also note the uptime for the devices.

sensors:
  - platform: wifi_signal
    name: '${device_name} WiFi Signal'
    update_interval: 60s
    accuracy_decimals: 0
  - platform: uptime
    name: '${device_name} Uptime'
    unit_of_measurement: days
    update_interval: 300s
    accuracy_decimals: 1
    filters:
      - multiply: 0.000011574