Hi newbie here,
I was develop the RFID system for payment solutions for small/medium shop with Arduino Mega 2560. It's only for prototype.
On Arduino side, it will do business logic such deduct the payment, get balance of credit and etc. But to check the card status, send the list of transaction it required to communicate with my Server.
Right now, I'm looking the best way to exchange data between SERVER and ARDUINO and can support up to 100 connection (in future) in the same times. On server side, I familiar with .Net Framework.
What the best way to do this? Using TCP protocol? If somebody has any experience, kindly share to me.
Regards,