Thanks both, great pointers
@ScruffR Data confidentiality isn’t an biggie at this point, I’d settle for just getting the file there (and worrying about encryption later). I found lots of good examples for setting up the TCP connection (Using a Camera and Sending JPEG to cloud, and [TCP Server and Client Example Socket Program] 2), but I’m still a little lost as to how to reference, chunk, and ‘send’ the file from the SD - any chance you could point me in the direction of an example?
@chrisp Thanks for the general tips - especially on the data-logging. Very happy to use the Particle Cloud - Im trying to keep everything as simple as possible though, and @zachary mentioned [here] 3 its easier to send to a private server. Again though, any examples/project shares of sending stored data through the particle cloud would be of huge help.