Add Yagala SM-SO301 power strip (#8)

Co-authored-by: shbatm <[email protected]>

_devices/Yagala-SM-SO301/Yagala-SM-SO301.md

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+---
+title: Yagala SM-SO301
+date-published: 2020-10-12
+type: plug
+standard: us
+---
+
+1. TOC
+{:toc}
+
+## Product Images
+
+![Product Image](product_image.jpg "Product Image")
+
+## GPIO Pinout
+
+| Pin     | Function                           |
+|---------|------------------------------------|
+| GPIO00  | Status LED inverted                |
+| GPIO04  | Relay 1 inverted                   |
+| GPIO05  | Push Button                        |
+| GPIO12  | Relay 3 inverted                   |
+| GPIO13  | Relay 2 inverted                   |
+| GPIO14  | Relay 4 inverted                   |
+| GPIO16  | USB Power Relay not inverted       |
+
+## Basic Configuration
+
+```yaml
+# Basic Config
+---
+substitutions:
+  displayname: "Power Strip"
+  unique_id: "yagala_sm-so301_01"
+
+esphome:
+  name: ${unique_id}
+  platform: ESP8266
+  board: esp01_1m
+  esp8266_restore_from_flash: true
+
+# WiFi connection
+wifi:
+  ssid: !secret iot_wifi_ssid
+  password: !secret iot_wifi_password
+  power_save_mode: none
+  fast_connect: true
+  # Enable fallback hotspot (captive portal) in case wifi connection fails
+  ap:
+    ssid: "${displayname}"
+    password: !secret ap_mode_password
+
+captive_portal:
+
+# Enable logging
+logger:
+
+# Enable Home Assistant API
+api:
+  password: !secret api_password
+  reboot_timeout: 0s
+
+# Enable Web server
+web_server:
+  port: 80
+
+text_sensor:
+  - platform: wifi_info
+    ip_address:
+      name: "${displayname} IP Address"
+
+ota:
+  password: !secret ota_password
+
+switch:
+  - platform: gpio
+    name: "${displayname} USB Power"
+    id: usb_power
+    pin:
+      number: GPIO16
+  - platform: gpio
+    name: "${displayname} Relay 1"
+    id: relay1
+    inverted: true
+    pin:
+      number: GPIO4
+  - platform: gpio
+    name: "${displayname} Relay 2"
+    inverted: true
+    pin:
+      number: GPIO13
+    id: relay2
+  - platform: gpio
+    name: "${displayname} Relay 3"
+    inverted: true
+    id: relay3
+    pin:
+      number: GPIO12
+  - platform: gpio
+    name: "${displayname} Relay 4"
+    inverted: true
+    id: relay4
+    pin:
+      number: GPIO14
+  # Switch to restart strip
+  - platform: restart
+    name: "${displayname} Restart"
+
+light:
+  # Blue LED PWM
+  # GPIO0
+  - platform: monochromatic
+    name: "${displayname} Blue LED"
+    output: output_component_blue
+
+output:
+  #Blue LED
+  - platform: esp8266_pwm
+    id: output_component_blue
+    pin: GPIO0
+    inverted: true
+
+binary_sensor:
+  # Button & Automation to toggle all switches
+  # GPIO5
+  - platform: gpio
+    pin: GPIO5
+    id: button
+    name: "${displayname} Button"
+    on_press:
+      - switch.toggle: relay1
+      - switch.toggle: relay2
+      - switch.toggle: relay3
+      - switch.toggle: relay4
+      - switch.toggle: usb_power
+    internal: True
+
+  # Binary sensor to display the connected status
+  - platform: status
+    name: "${displayname} Status"
+```