Tinkering

Clockwork Gizmos
Gadgets are special devices made from clockwork components that can be utilized in and out of combat with the Use Object action. In order to craft a gadget, you need several things:
 * A set of tinker's tools
 * A schematic for the gadget you wish to make
 * A certain amount of scrap components, represented by their worth in currency

If these requirements are satisfied, you can use downtime to craft gadgets. It takes one hour for every 25gp worth of scrap components the gadget requires to complete the item, or one hour for every 100gp if you have access to a dedicated workshop. Upon completion you successfully craft the object if you succeed on an Intelligence (Tinker's Tools) ability check against the object's crafting DC. Otherwise, you lose the components used and must start again.

Disassembly
You can break down gadgets you have made or found into scrap components. If you succeed on a DC 15 Intelligence (Tinker's Tools) ability check, you receive half the components used to make the gadget. On a failure, the object breaks and the components are lost. You automatically succeed on this ability check if you possess the schematics for the gadget.