What parts needed when building multiple projects?

Projects General Guidance
1

I am building 3 devices and each of them need an arduino as its brains. I am about to order parts so pls tell me if the following strategy is the right one?

I am doing the development on board A (see pic below), its the usual arduino uno board with USB interface to download programs from PC

B- I will order 3 of these boards as there are 3 products to build

C- To download the program to each board B from the PC I will order 1 board C

Once the program is downloaded and it works I will remove the board C

Is that the way to go or am I missing something here?

uno, nano, USB to serial.jpg
uno, nano, USB to serial.jpg1365×360 114 KB

2

Should work Ok.

You will have to find the proper USB PC driver software to support your item C as it isn't supplied as part of the standard arduino IDE package. You could consider using arduino nano 3.0 modules instead of your item B as it includes a FTDI USB serial interface chip so you don't need item C and the USB driver is supplied in the arduino IDE.

Lefty