Getting just temperature from any weather service?

General
1

Hey guys I am working on a weather lamp (Turns a RGB led strip) depending on the temperature of the city where I live.

I started based on parsing a JSON from openweathermap. I checked this thread, seems a bit deprecated, mostly the JSON library. Anyhow I manged to make it work, but sparkcore crashes due to lack of memory I think.

I was wondering is there any other API I can just ping for the Temperature instead of a big JSON and then parse it?

Thanks in advance.

1 Like
2

you can try something like this webhook from the open-api Weather Underground:

{
"event": "get_my_weather",
"url": "http://api.wunderground.com/api/<getYourOwnApiKeyAndInsertHere>/conditions/q/NJ/Princeton.json",
"requestType": "POST",
"headers": null,
"query": null,
"responseTemplate": "{{#response}}{{#current_observation}}{{#estimated}}{{weather}}~{{temp_f}}~{{relative_humidity}}~{{wind_dir}}~{{wind_gust_mph}}~{{dewpoint_f}}~{{/estimated}}{{/current_observation}}{{/response}}",
"json": null,
"auth": null,
"mydevices": true
}

returns:

""Partly Cloudy~76.6~94%~South~0~75~"

strip out what you don't want in your response template; something like this will return just your temperature:

{
"event": "get_my_weather",
"url": "http://api.wunderground.com/api/<getYourOwnApiKeyAndInsertHere>/conditions/q/NJ/Princeton.json",
"requestType": "POST",
"headers": null,
"query": null,
"responseTemplate": "{{#response}}{{#current_observation}}{{#estimated}}{{temp_f}}~{{/estimated}}{{/current_observation}}{{/response}}",
"json": null,
"auth": null,
"mydevices": true
}

You should be able to easily parse that return.

4 Likes
3

Hey thank you so much for the reply, I’ve been reading and testing in order to make a good reply.

I read about webhooks, and thats the way to go. I have some doubts regarding defining the reponse template.

This is my JSON, http://api.openweathermap.org/data/2.5/weather?q=Buenos%20Aires,ar&units=metric&lang=es_ar

On the response template I should add the complete description of the JSON I am using? or just the fields I want to retrieve?

Regarding the code on the spark core, I am ok there, Im a bit of a JR when it come to web and json, so sorry if some of my questions are really basic.

Also, should I nano a local json, using the format your provided??

like:

   {
"event": "get_my_weather",
"url": "my own JSON",
"requestType": "POST",
"headers": null,
"query": null,
"responseTemplate": //my own response template,
"json": null,
"auth": null,
"mydevices": true
}

when I add a new json using the client, I get this kind of definition:

particle webhook GET get_weather2 http://api.openweathermap.org/data/2.5/weather?q=Buenos%20Aires,ar&units=metric&lang=es_aSending webhook request  { uri: 'https://api.particle.io/v1/webhooks',
  method: 'POST',
  json: 
   { event: 'get_weather',
     url: 'http://api.openweathermap.org/data/2.5/weather?q=Buenos%20Aires,ar',
     deviceid: undefined,
     requestType: 'GET',
     mydevices: true },
  headers: { Authorization: 'Bearer 75ee4042b0e4ec052387ef6900d4b342511XXXX' } }
Successfully created webhook with ID 5608591cbcf35fab63XXXXXX

Thanks in advance.

4

Just include the fields you want in your response template. Look at this tutorial for ways to help you limit the response to what you want.

1 Like