ESP8266-WiFi-Socket-II

Alternative Firmware for

• Shelly 1 OS, https://shelly.cloud/shelly1-open-source/

• BlitzWolf SHP6, https://www.blitzwolf.com/2300W-EU-WIFI-Smart-Socket-p-300.html

• BlitzWolf SHP6 (V.1.1, 15A, 3450W), https://www.blitzwolf.com/3450W-EU-WIFI-Smart-Socket-p-412.html

• OBI Version 2, https://www.obi.de/hausfunksteuerung/wifi-stecker-schuko-weiss/p/4077806

• OBI Version 1, https://www.obi.de/hausfunksteuerung/wifi-stecker-schuko/p/2291706

Precompiled Firmware

Attention - update OTA from 1.1.x to 2.x for OBI Version 1 only

If you like to update from firmware 1.1.x (OBI Version 1) to 2.x over the air (OTA) please first flash firmware version 1.2.0migration.

If you try to update direct from 1.1.x to the current 2.x firmware version you will get an "out of memory" error

Due to a new memory model the firmware will reset all settings to the default values

Find the precompiled firmware in the firmware directory.

Compile

This is a PlatformIO project.

Firmware Reset

1. Power on the WiFi Socket (plug in)
2. Press down and hold the Power-Button during the first 5s
3. Release Power-Button when the WiFi LED starts rapidly fast blinking
4. The firmware reset ends after about 30s indicated by a permanent WiFi LED on.

Default Settings

After a firmware reset the following values are set.

	value	description
Admin password	admin	Setup admin password
WiFi Mode	AP	Accesspoint- or Station-Mode
WiFi SSID	WifiSocketII-esp id	SSID in accesspoint mode
WiFi Password	12345678	Default WiFi password
Network Mode	DHCP	Network mode STATIC or DHCP *1
Network IP-Address	192.168.192.1	device ip address *2
Network Mask	255.255.255.0	Subnet mask *2
Network Gateway	192.168.192.1	Default gateway *2
Network DNS	192.168.192.1	DNS server address *2
OTA Hostname	wifi-socket-1	Over The Air hostname
OTA Password	otapass	OTA firmware upload password
OpenHAB Callback Enabled	false
OpenHAB Version	1	Callback for OpenHAB version 1 or 2
OpenHAB Item Voltage	PowerMeter1Voltage	('-' = disables this item)
OpenHAB Item Current	PowerMeter1Current	('-' = disables this item)
OpenHAB Item Power	PowerMeter1Power	('-' = disables this item)
OpenHAB Item Name	WifiSocket1
OpenHAB Host	192.168.1.1
OpenHAB Port	80
OpenHAB Use Authentication	false
OpenHAB User	user
OpenHAB Password	password
OpenHAB SendingInterval	60	interval time in seconds (0=disable)
Alexa enabled	false
Alexa devicename	Socket	Devicename for Alexa HA
MQTT Enabled	false
MQTT ClientId	WifiSocket1
MQTT Host	192.168.1.1
MQTT Port	1883
MQTT Use Authentication	false
MQTT User	user
MQTT Password	password
MQTT In Topic	socket1/in	receiving commands
MQTT Out Topic	socket1/out	sending callback
MQTT Topic Voltage	powermeter1/voltage	('-' = disables this topic)
MQTT Topic Current	powermeter1/current	('-' = disables this topic)
MQTT Topic Power	powermeter1/power	('-' = disables this topic)
MQTT Topic JSON	powermeter1/json	sending all values in JSON format
MQTT Sending Interval	60	interval time in seconds (0=disable)
Syslog Enabled	false
Syslog Host	192.168.1.1
Syslog Port (TCP)	514
Syslog App Name	gateway-doorbell

*1 In WiFi Station-Mode only

*2 will be overwritten from DHCP-Response

Hardware

• BlitzWolf SHP6

• OBI Wifi Stecker Schuko - Version 2

• OBI Wifi Stecker Schuko - Version 1

OpenHAB

OpenHAB - HTTP Binding sample

Switch LivingRoom_Power "Living Room Outlet" {http=">[ON:GET:http://wifi-socket.ip/on] >[OFF:GET:http://wifi-socket.ip/off]"}

If you like to read the state of the socket by OpenHAB. First create a file getState.js in the transform directory with the following content:

JSON.parse(input).state;

add

<[http://wifi-socket.ip/state:30000:JS(getState.js)]

to the Switch definition. Every 30s the state of the socket will be checked.

OpenHAB - MQTT binding sample for the switch and the energy monitor values

MQTT Binding Version 1.x

Switch WifiSocketBwShp6 "BW SHP6 Ein / Aus" {mqtt=">[mosquitto:socket-bw/in:command:ON:1],>[mosquitto:socket-bw/in:command:OFF:0],<[mosquitto:socket-bw/out:state:default]"}

Number WifiSocketBwShp6Voltage "BW SHP6 Voltage [%.1fV]" {mqtt="<[mosquitto:socket-bw/voltage:state:default]"}

Number WifiSocketBwShp6Current "BW SHP6 Current [%.2fA]" {mqtt="<[mosquitto:socket-bw/current:state:default]"}

Number WifiSocketBwShp6Power "BW SHP6 Power [%.1fW]" {mqtt="<[mosquitto:socket-bw/power:state:default]"}

MQTT Binding Version 2.x

For the Binding Version 2.x it is necessary to configure the MQTT Thing and according to that the items.

mqtt.things:

Bridge mqtt:broker:mosquitto "Mosquitto" [ host="127.0.0.1", secure=false, clientID="MotherShip", username="$MQTT_USERNAME", password="$MQTT_PASSWORD"]
{
   Thing topic socket-bw "BW SHP6" {
    Channels:
     Type switch : state "BW SHP6 Ein / Aus" [ stateTopic="wsocket-bw/out", on="ON", off="OFF", commandTopic="socket-bw/in", on="ON", off="OFF" ]
     Type string : voltage [ stateTopic="wsocket-bw/voltage" ]
     Type string : current [ stateTopic="wsocket-bw/current" ]
     Type string : power [ stateTopic="wsocket-bw/power" ]
   }

}

mqtt.items:

Switch WifiSocketBwShp6 "BW SHP6 Ein / Aus" { channel="mqtt:topic:mosquitto:socket-bw:state" }

Number WifiSocketBwShp6Voltage "BW SHP6 Voltage [%.1fV]" { channel="mqtt:topic:mosquitto:socket-bw:voltage" }

Number WifiSocketBwShp6Current "BW SHP6 Current [%.2fA]" { channel="mqtt:topic:mosquitto:socket-bw:current" }

Number WifiSocketBwShp6Power "BW SHP6 Power [%.1fW]" { channel="mqtt:topic:mosquitto:socket-bw:power" }

References

• PlatformIO
• Arduino core for ESP8266 WiFi chip
• Async TCP Library for ESP8266
• Async Web Server for ESP8266 and ESP32
• FauxmoESP - Amazon Alexa support for ESP8266 and ESP32 devices
• Arduino-pubsubclient - A client library for the ESP8266 that provides support for MQTT
• Pure.CSS - A nice CSS, as GZIP it is less than 4k so it is useful for embedded devices