sending data to thingsboard.io

[gdimaria]

For HTTP use this:

Code:

require('json')
require('ltn12')
require('socket.http')

body = json.encode({ temperature = 25 })
response = {}

res, code = socket.http.request({
  url = 'http://demo.thingsboard.io/api/v1/eoKkkZ6JL7UbmyOHGX9L/telemetry',
  method = 'POST',
  headers = {
    ['Content-Type'] = 'application/json',
    ['Content-Length'] = #body,
  },
  source = ltn12.source.string(body),
  sink = ltn12.sink.table(response),
})

if res and code == 200 then
  log('request ok')
else
  log('request error', code, table.concat(response))
end

For MQTT search the forum, there are many examples of how to use it. The data must be encoded using JSON, same as for HTTP requests.

Thank you. How to pass a object value?

Code:

value = grp.getvalue('4/1/11')


body = json.encode({ temperature = value })

That way doesn't work. What is correct syntax?