I have a PMT(which contains a microcontroller) and an Arduino Mega 2560. The Arduino will be connected to my computer.
I can't understand how to connect the microcontroller's PMT to Arduino so i can, in my Arduino Source, command the microcontroller.
I've read the documentation (in english, and i'm not so i try to understand) and the microcontroller has a RS232-c Serial interface.
So how can i connect them and do the Arduino handle supplying the microcontroller?...
Well i'm pretty lost, i don't like electronics much
Thank you for reading !