Following on from emonESP firmware dev thread:
It’s occurred to me that the ESP possible with the addition of an SD card or extra flash could be used to buffer data before posting to emoncms. In the event of network failure, data could be buffered locally on the ESP then bulk uploaded with emoncms connection to restored.
What do you think of the feasibility of this feature? It would be really great not to have to relay on the quality of a network connection to obtain good quality monitoring data. There could even be potential for the ESP to operate in ‘offline’ mode logging to an SD card for later data upload.
Have you got any thoughts @jeremypoulter ?