I am testing the service with a Particle Photon, we are taking measurements and sending to Ubidots, all is great.
However from time to time we lose network connection.
To get around this we save our variable data to a local SD Card.
However we cannot work out how we can set the timestamp on the data as it comes to the Ubidots server.
For example, if we recorded 10 values whilst we were off line for 1 hour, and then send 10 values, it would appear as if the values had done nothing for 1 hour and then rapidly fluctuated.
Any advice would be great.