Added Hiking DDS238-2 WIFI Energy Meter

src/docs/devices/Hiking-DDS238-2-WIFI/index.md

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+---
+title: Hiking DDS238-2 WIFI Single Phase 65A Energy Meter
+date-published: 2021-05-15
+type: misc
+standard: global
+---
+
+## Manufacturer
+
+Hiking TOMZN (Tuya)
+
+## Product Images
+
+![Product Image](hiking_DDS238-2.jpg "Product Image")
+
+## Available from
+
+[aliexpress.com](https://www.aliexpress.com/item/1005002409492948.html)
+
+## Flashing info
+
+I flashed the compiled config using tasmotizer with no issues. Desolding the ESP-Board is required as the TX/RX pins are connected to the Tuya MCU, guide [here](https://github.com/krikk/Hiking-DDS238-2-WIFI-Din-Rail-Energy-Meter-flashing-Tasmota) for Tasmota with photo's.
+
+## GPIO Pinout
+
+| Pin    | Function          |
+| ------ | ----------------- |
+| GPIO1  | Tuya MCU Tx       |
+| GPIO3  | Tuya MCU Rx       |
+| GPIO14 | LED (inverted)    |
+| GPIO16 | Button (inverted) |
+
+## Basic Configuration
+
+```yaml
+# Basic Config
+---
+substitutions:
+  device_name: energy_meter
+  friendly_name: "Energy Meter"
+
+esphome:
+  name: ${device_name}
+  platform: ESP8266
+  board: esp01_1m
+
+wifi:
+  ssid: !secret wifissid
+  password: !secret wifipassword
+  ap:
+    ssid: ${friendly_name}
+    password: !secret esphome_admin_password
+
+captive_portal:
+
+logger:
+  baud_rate: 0
+
+api:
+
+ota:
+
+uart:
+  rx_pin: GPIO3
+  tx_pin: GPIO1
+  baud_rate: 9600
+
+tuya:
+
+switch:
+  - platform: "tuya"
+    name: "${friendly_name} Switch"
+    id: power
+    switch_datapoint: 1
+
+binary_sensor:
+  - platform: gpio
+    pin: 16
+    id: button
+    on_press:
+      then:
+        - switch.toggle: power
+
+sensor:
+  - platform: "tuya"
+    name: "${friendly_name} Current"
+    sensor_datapoint: 18
+    accuracy_decimals: 2
+    unit_of_measurement: "A"
+    icon: "mdi:flash"
+    filters:
+      - multiply: 0.001
+
+  - platform: "tuya"
+    name: "${friendly_name} Power"
+    sensor_datapoint: 19
+    accuracy_decimals: 1
+    unit_of_measurement: "W"
+    icon: "mdi:flash"
+    filters:
+      - multiply: 0.1
+
+  - platform: "tuya"
+    name: "${friendly_name} Voltage"
+    sensor_datapoint: 20
+    unit_of_measurement: "V"
+    accuracy_decimals: 1
+    icon: "mdi:flash"
+    filters:
+      - multiply: 0.1
+
+  - platform: "tuya"
+    name: "${friendly_name} kWh +"
+    sensor_datapoint: 101
+    unit_of_measurement: "kWh"
+    accuracy_decimals: 3
+    icon: "mdi:flash"
+    filters:
+      - multiply: 0.01
+
+  - platform: "tuya"
+    name: "${friendly_name} kWh -"
+    sensor_datapoint: 9
+    unit_of_measurement: "kWh"
+    accuracy_decimals: 3
+    icon: "mdi:flash"
+    filters:
+      - multiply: 0.01
+```