ESP8266-WemosRelay

Simple project for making an Amazon Echo/Alexa compatible IoT device with a Wemos D1 + Relay Shied.

Features

• Amazon Echo/Alexa Support (fauxmoESP)
• Easy Wifi Configuration (ESPAsyncWifiManager)
• Async Web Server support (ESPAsyncWebServer)
• Built-in Configuration Web site
• AngularJS site with REST based API
• Static site is stored in SPIFFS, utilizes CDNs to reduce footprint
• ArduinoOTA to support OTA updates plus loading SPIFFS
• Built using PlatformIO

3rd Party Libraries

This project is designed to serve as a starter project for controlling a Wemos D1 + Relay Shield. Out of the box it is configured with the following libraries

• ESPAsyncWifiManager
  • Provides an simple WiFi setup process for configuring a new device and assigning a name for within Alexa.
• fauxmoESP
  • To add simple support discovery plus On/Off commands from Alexa and other IoT platforms
• ESPAsyncTCP & ESPAsyncWebServer
  • Add support for a light-weight web server
• AruidnoJSON
• Utilized for Configuration storage plus REST based API

SPIFFS

The application does utilize SPIFFS for storing configuration as well as the static files for the web site.

• Configuration is stored within /config.json
• Web application file system
  • index.html
  • main.js

Don't forget to load SPIFFS into the device. pio run -t uploadfs

Web Server

Supported URLs

• Static site (from SPIFFS)
  • index.html
  • main.js
• /relayon
• /relayoff
• /reset
  • Triggers a CPU reset
• /resetwifi
  • Reset Wifi Configuration (which will trigger setup Hotspot upon restarting)
• /heap
  • Return available HEAP Used for the AngularJS site
• /info
  • HTTP_GET, REST based API used to retrieve configuration
• /settings
  • HTTP_POST, REST based API used to update configuration

TODO

• Split source code into multiple files
• TBD