I am fairly new to electronics and have bummed into a situation.
I was working on a project recently involving an Arduino Nano. Up until now, everything was on a breadboard. I had the flexibility to upload all sorts of code to it.
Last weekend I thought it's getting a bit messy with all the wires and stuff. Let's get a custom PCB of it. I designed it and placed the order with a local vendor.
The thing that I did not consider before placing the order was how to upload the code on the Nano now.
From the Gerber file, I am confident that the PCB which is going to arrive shortly will not have the USB port.
Without the USB port, how will I transfer my code to the PCB?
Did I miss/skip a step during all this where I tell the vendor this code needs to be present on the PCB, or will I still have the option to upload my code?