You can also buy shipments of circuitry from NPCs. This is a list of all the items that can be scrapped for circuitry:
Method 1: Farming Telephones
Telephones are a fairly common item, and they contain 2 circuitry each. You can find them in most buildings with offices. I suggest keeping an eye out for them, but these are the best spots to find many telephones together: This is their location on the map of the Commonwealth:
Method 2: Farming Military-Grade Circuit Boards
Military-grade circuit boards yield 5 circuitry each, but are not very easy to find. These are the spots I recommend: This is their location on the map of the Commonwealth:
Method 3: Buying Circuitry From NPCs
Buying circuitry from NPCs is the easiest way to get it, but also the most expensive. It’s only worth it if you have a steady income of caps, or a few extra to spare. This is a list of all the NPCs that sell shipments of circuitry: And this is their location on the map:
