Slated for Upgrades
Collect three Ancient Screws to upgrade the Sheikah Sensor, three Ancient Shafts to upgrade the Remote Bomb rune, and three Ancient Cores to upgrade the Stasis rune. The upgrades can be done in any order, and getting all three will complete the quest.
These items are very easy to acquire even early on in the game. Any inactive Decayed Guardian, such as those at Ash Swamp and Fort Hateno, can be examined for parts, and killing live Guardians always drops parts. There is even a character, Teli, walking on the path north of Fort Hateno who sells two of the parts needed. Perhaps the easiest way is to go to a shrine that contains a Guardian and kill it over and over. Guardians respawn every time you enter a shrine.
- Main article: Sunshroom Sensing