This is my first Arduino project. It's been probably 20yrs since I last programmed in C++ and I've read that the Uno performs best with this. I am slowly re-learning this language with tons of reading.
My goal is to communicate with a Serial device (RS232 signal is 5v, the baud rate, bits, and parity are also known) via Ethernet. After researching the vastness of the internet, I think I need an RS232 to TTL Converter, Ethernet Shield, and ATmega 2560. I chose the 256k because I don't know how big the code will be to make this work. I felt 32k would be like putting a refrigerator in a microwave box. I'd rather have too much than not enough.
My guidance question is: Will the equipment I've listed above make the connection I need (other than the obvious cabling)? Will the Ethernet Shield need any additional programming to convert TTL to packets, is this built in, or does the ATmega do the conversion and pass this info back to the Ethernet Shield for transmission? My concern is overloading the Uno with too many tasks.
You may be wondering why I didn't just simply buy an RS232 to Ethernet convertor and write a program to send/receive data from the PC. That answer I can say is that I wanted something to challenge me and create myself that has a web interface. It's quite boring being forced to sit at home all day.
So yeah, I'm at square 1. Baby steps, right?