Circuits farming guide
Venus — Tessera (Defense)
Short, low-level Corpus Defense on one of Circuits’ two signature planets; Circuits drop from the enemies you kill, so a Resource Drop Booster and a loot frame add to every wave.
Boosters help: this spot relies on enemy drop tables.
Ceres — Gabii (Dark Sector Survival, Steel Path)
The wiki flags Ceres Dark Sector nodes as the higher-drop-rate Circuits spot; on Steel Path the Grineer density plus a Resource Drop Booster and Nekros make Gabii a strong endless squad farm.
Boosters help: this spot relies on enemy drop tables.
Early game
Tessera on Venus (Defense) is a short, low-level Corpus Defense on one of Circuits’ two signature planets, making it an easy repeat farm for a fresh account. Circuits drop from the enemies you kill, so a Resource Drop Booster and a loot frame add Circuits to every wave you clear.
Mid & late game
Gabii on Ceres (Dark Sector Survival) is the wiki’s higher-drop-rate endgame pick, with Steel Path squads running it for longer per rotation than a standard mission. Circuits are a common enemy drop, so the Grineer density on Steel Path plus a Resource Drop Booster and a Nekros loot squad make this a strong endless farm. Deploying a Titan Extractor on Venus or Ceres is also a passive way to stock up Circuits without actively farming.