Good morning my name is Manuel I'm Mechatronic Engineer with experience and knowledge working with Arduino + RFID + software desktop to communicate with Arduino (Using Java), I have worked with the DS3231 and DS1307, I can to develop your project, schematic, code, software desktop, I can to mount the circuit and test it. I have one arduino mega, DS3231, keypad, RFID Module, I can to mount the circuit in physic. I have worked with LCD 12864, TFT Touchscreen, etc... I'm to order.
Ing. Manuel C.
100% Freelancer