Send file from Arduino to Server

Projects General Guidance
1

I am currently using an Arduino Uno to log data from a push button input. Every time the push button is pressed, the Arduino logs a timestamp to an SD card locally connected to the board. Currently, I have to remove the SD card and pull the data to my PC manually. What I would like to do is, everyday at say 12:00 midnight, send the file on the SD to an internal network server.

I do not have any wifi or ethernet functionality in my system, but I have come across a number of posts discussing the use of an ESP8266 Wi-Fi Module. Before purchasing hardware and going through the hassle of programming/troubleshooting I would like some feedback on the feasibility of this idea.

My question, is this desired process of sending a file from the SD card to an internal network server possible, and if so, what hardware is needed to accomplish this task?

Thanks.

2

You need some form of network interface indeed. The ESP8266 is one option, and in that case you can probably even do without the SD card - use the built-in Flash storage, total 4 MB on the NodeMCU or WeMOS boards, of which up to 3 MB configurable as file storage space.

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Glad to hear I am on the right track. Do you have any suggestions for how to accomplish the file transfer or tutorials related to this topic? I have yet to find a post that covers file transfer. I can only seem to find systems for transferring single data points at a set interval.

Also, the idea of simplifying the system with no SD card is tempting. However, I like the redundancy and physical nature of having the data on a separate component in case the board itself fails.