Good morning, Has anyone here had the experience of developing an application that stores the data when the internet is not working and later sends this data to the Ubidots server?
You should use a board with external storage, for example an Arduino YUN. You have to make a routine which verifies the connection status and that allows you to know if your data is saved or sent, if your data is saved, you could set a flag for send your data when the connection is on. You should take in regard that SD has a maximum number of fields you can fill.
I haven’t developed one yet, but you should not have problem with that. Tell me when you finish! I would love to check it out