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Replaces original Tuya firmware on Door and Window Sensor devices with ESP8266

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WDoorSensor

GitHub version

Replaces original Tuya firmware on door sensors with battery and ESP8266 wifi module. The firmware is tested with following device:

  • TYMC-1 Earykong (oval shaped door sensor)

The sensor can be purchased on AliExpress for example

Flashing connection

Features

  • No Tuya cloud connection anymore
  • Enables sensor to send door and battery state via MQTT
  • Configuration of connection and device parameters via web interface

General way of working with this firmware

  • If sensor is activated by door opening/closing (by magnet), the device will connect to MQTT broker and sends the state once. Delay is around 4-6 seconds
  • For configuration, hold the reset button until the LED blinks. Then the sensor stays on for around 60 seconds. If no settings found (e.g. after first flash), it will create a Wifi AcessPoint and you can configure it via http://192.168.4.1/config. Otherwise it will connect to the existing Wifi, web interface can be called for configuration via http://<your_IP>/config.

Installation from original Tuya firmware

To install the firmware, follow instructions here:
https://github.com/klausahrenberg/WDoorSensor/blob/master/Flashing.md

Initial configuration

After installation/flashing of firmware, disconnect all connections from programmer and insert the batteries:

  • Hold reset button for 5 sec until red LED starts Flashing
  • Now you have 60 seconds to configure... If you need more time, move the magnet during configuration.
  • Look for wifi AP 'DoorSensor...', Password '12345678'
  • Configure Wifi-Settings under http://192.168.4.1

Upgrade between different version of this firmware

After the installation of this firmware, any newer version can be installed over the air:

  • Hold the reset button until the LED blinks. The sensor now stays on for around 60 seconds and you can access the web inteface via http://<your_IP>/config.
  • Go to 'Update firmware' and select the new firmware file, then start the update.

Json structure

{
  "idx":"doorsensor",
  "ip":"192.168.x.x",
  "firmware":"x.xx",
  "open":true|false,
  "battery":"low|medium|high"
}

Build this firmware from source

For build from sources you can use the Arduino-IDE, Atom IDE or other. All sources needed are inside the folder 'WDoorSensor' and my other library: https://github.com/klausahrenberg/WAdapter. Additionally you will need some other libraries: DNSServer, EEPROM (for esp8266), ESP8266HTTPClient, ESP8266mDNS, ESP8266WebServer, ESP8266WiFi, Hash, NTPClient, Time - It's all available via board and library manager inside of ArduinoIDE

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Replaces original Tuya firmware on Door and Window Sensor devices with ESP8266

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