The more tokens you allocate, the more complex the JSON can be, but also the more memory is occupied. Each token takes 8 bytes, so sizeof (JsonParser<32>) is 256 bytes which is quite big in an Arduino ...

GitHub - ssmipp/arduino_i2c_orja_json: Danfoss heat pump USB based control interface, which mimics ThermIQ-USB functionality. Added ATJ to read data in single request in JSON format.

The Arduino has very little memory, so [johannes] used the Google Apps engine as a buffer between his Arduino and the JSON APIs of his data sources. This significantly reduces the amount of data ...

The Arduino has a json library which is pretty good enough to decode data from json. Process: First of all go to openweathermap.org, do a sign-in and find your city code from the site.