Unfortunately, the Unsplash service closed down their API to free use. You will have to log in to their website at www.unsplash.com and join their developer program. Once you have an Access Key, you can use that key to make the module function.

Edit: Okay, done. It should accept notifications from the MMM-OpenWeatherForecast app. Update the module, change the source parameter to “MMM-OpenWeatherForecast” and it should pick up the notifications.

• I updated the README for a more complete documentation of the module and options.
• Expanded the default collections to source the images.
• Added more logging messages for verbose mode

Thanks goes to @eouia for the many changes.

REMOVED Removing dependency of dying momentJS
ADDED config.monthMap : Now you can define keywords per month. (It could be the replacement of config.hemisphere). You can set winter christmas santa-clause as keyword for December. Or you can set spring to March, April, May.
ADDED config.externalCollections : separated collections data to external file.
ADDED config.size is added. you can set pictures original dimension by this value. (this value is not for cropping. Rather for resolution optimizing.)
CHANGED Default weather module source - weather is added.
REMOVED Obsoleted weather module source - currentweather is removed.
ADDED CSS controllable. Now you can control the style(CSS selector .WTHBGR) more comfortably.
CHANGED Current collection list was too huge and not maintained. Now Collection fallback is supported. When the module cannot find a proper collection, the keyword searching would be alternated instead.
CHANGED Now, collection matching is based on match-score.

notification: "SOME MODULE NOTI",
payloadConverter:(payload)=>{
        return  "windy night spring"  // <= query text for the image.  
}

Currently, this module is managed by brianHelper

I see the module, and this post, are not really active, so if it is not supported (or maintained) anymore - just ignore me!

[2018-12-13]

@bkeyport
Now you can assign specific collection to specific keyword as your wish to get more related pictures.

By example, you can assign 1877260 as source of clear-day pictures.

[2018-12-03]

• Now you can simply set source instead complex notification & payloadConverter
  • MMM-DarkSkyForecast is supported as source
  • Currently supported source : currentweather, MMM-NOAA3, MMM-DarkSkyForecast
• Background image position is centered now.

Or if you are using MMM-NOAA3, Try cowboysdude’s forked version.(https://github.com/cowboysdude/MMM-WeatherBackground).
Instead getting image from unsplash, it serves prepared static image.

Most of the time, it’s keyboards, computer related stuff, people, etc.

Can I restrict the pictures?

{
  //disabled:true,
  module: "MMM-WeatherBackground",
  config: {
    targetDOM: ".MMM-Dummy", // < -- change to where you want to display
    notification: "WEATHER",
    payloadConverter:(payload)=>{
      var n = (moment().isAfter(moment(payload.sunset))) ? "night" : "day"
      var iconMap = {
        "tstorms": "thunderstorm",
        "chancesnow": "snow"
      }
      var ret = (payload.icon in iconMap) ? iconMap[payload.icon] : payload.icon
      return ret + " " + n
    }
  }
},

I play with code…THEY know it.

Don’t sell yourself short, bro. There hasn’t been a module I’ve broken that you haven’t been able to fix. I tip my hat to you.

So, here is a simple(?) trick.

I made a dummy module for doing nothing but just existing.
https://github.com/eouia/MMM-Dummy
Install that, and modify configuration like this.

{
  module:"MMM-Dummy",
  position: "fullscreen_below",
  config: {
    width:"100vw",
    height: "100vh",
  }
},
{
  module: "MMM-WeatherBackground",
  config: {
    targetDOM: ".MMM-Dummy"
  }
},

Now MMM-Dummy will contain weatherphotos as its background image. You can show/hide this module with any page controlling modules.(MMM-Pages? MMM-Caroulsel?)