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With the Robotics Expert perk, you do an additional 25% damage to any robot. Also, sneaking up on a hostile robot undetected and deactivating it will put that robot into a permanent shutdown state.Fallout 3 in-game description

Robotics Expert is a perk in Fallout 3, Fallout: New Vegas, Fallout 4 and Fallout 76.

Fallout 3 and Fallout: New Vegas[edit | edit source]

Effects[edit | edit source]

Grants an extra 25% damage dealt to robots. Also, entering sneak mode and deactivating a robot from behind permanently shuts it down.

Robots that can be disabled[edit | edit source]

Additional dialogue[edit | edit source]

In Fallout 3, additional dialogue options are unlocked with certain robots with this perk. These often bypass Speech checks:

Notes[edit | edit source]

  • Deactivating a robot awards 10 XP (Fallout: New Vegas only).
  • A deactivated robot cannot be targeted in V.A.T.S. However, the unit can still take damage, and destroying one will give the same experience and loot as normal. Every attack on a deactivated robot while sneaking will register as a "sneak attack critical," regardless of the player's location or level.
  • Making physical contact with a deactivated robot while sneaking may still alert other robots in the vicinity to the player's presence, just as if the robot were fully active.
  • When given the option to disable a sentry bot, it also gives the option to "talk" to the robot, as if one was interacting with a friendly robot, such as Wadsworth. However, one cannot engage the robot in conversation.
  • For deactivating a robot using the perk, it is sufficient to be crouched and behind it. As opposed to the perk's description, it is not necessary to be [HIDDEN], i.e. close up and unnoticed. The player character can in fact charge a hostile robot, crouch, circle strafe and disable it while it is circling about weapons blazing.
  • Automated turrets are scripted as robots and can be disabled with this perk. While in many cases they are out of reach, ceiling-mounted turrets can be disabled if the player is able to reach them by jumping while crouched.
  • When sneaking up on a robot with this perk, if "talk" is selected, it talks to the player character and does not attack. (e.g. a sentry bot, when the talk selection is selected, it will say "Do not interfere with security operations.")
  • Sergeant RL-3 can be disabled with this perk.
  • Deactivating a robot will not cause any of its allies in the vicinity to turn hostile.
  • Big MT protectrons often can not be disabled. An example is Mk6 protectrons in the Big MT west tunnel at high levels.

Fallout 4[edit | edit source]

Machines will always serve humans, if you have anything to say about it. Hack a robot, and gain a chance to power it on or off, or initiate a self-destruct.— Rank 1 description
Rank Requirements Description Base ID
1 INT 8 Machines will always serve humans, if you have anything to say about it. Hack a robot, and gain a chance to power it on or off, or initiate a self-destruct. 0004D889
2 INT 8, LVL 19 When you successfully hack a robot, you can incite it to attack. 00065E64
3 INT 8, LVL 44 When you successfully hack a robot, you can give it specific commands. [Command as a companion only] 001ACF96

Additionally, with the Automatron add-on, Ranks 1 and 2 of this perk are required to gain full access to all available robot construction options at the robot workbench.

Additional dialogue[edit | edit source]

  • Nuka-World (add-on) One can reprogram all protectrons at Dry Rock Gulch to cause you to skip their quests and receive their passwords.

Notes[edit | edit source]

  • Hacking a robot can be done in combat, but cannot be done at long distances.
  • When powering off a robot, the player character can still initiate a self-destruct immediately after without having to re-hack it. This will not reactivate the robot; it will stay where it is until it detonates.
  • Initiating a self-destruct will take some time. The robot will still continue to attack the player even as it begins the countdown to destruction; moreover, it will emit a small dosage of radiation. It is advised to shut down before initiating self-destruct.
  • Legendary protectrons will explode when killed; when combined with the self-destruct explosion, the player character should flee to a safe distance to avoid being killed.
  • Turrets and such cannot be hacked by this perk, and in fact require the appropriate Total Hack perk magazine to do so (via a terminal).
  • Robots such as sentry bots and assaultrons will act like a personal companion until they are killed. (The player character needs rank 3 of this perk to get full access to this.)
  • Combat sentry prototype MkIV cannot be interacted with this perk until the Combat sentry proto MK IV holotape is used to activate the Sentry Bot.
  • Hacked enemy robots will turn hostile towards any friendly settlements when following the Sole Survivor, but any hacked friendly robots will not attack them.
  • Nearby enemy robots that have been shut down will still prevent sleeping and fast traveling, however commanding them before shutting them down will treat them as friendly and avoid this behavior.
  • A robot that the Sole Survivor commands with the Rank 3 perk will follow and enter a different cell (i.e. entering an interior door) but will not fast travel.
  • To make a robot commanded with the Rank 3 perk stop following the Sole Survivor, just hack another robot.
  • Synths and all variants cannot be hacked with this perk, instead, one requires the Wasteland Whisperer (for Gen 1 & 2) and Intimidation (for Gen 3) perk to hijack them since they are classified as humanoid enemies.
  • It is not recommended to hack Percy in Diamond City and use the command option. This will cause him to follow the player character as a companion, potentially getting him killed. There is no way to make him go back to Diamond City permanently.
  • Rank 2 of Robotics Expert gives a 40% damage bonus against robots and synths, however, it is conditioned to stop working if you have rank 3.

Fallout 76[edit | edit source]

Machines will always serve humans, if you have anything to say about it.

Effects[edit | edit source]

Rank Description Base ID
1 Hack an enemy robot for a 25% chance to pacify it. 004E84E5
2 Hack an enemy robot for a 50% chance to pacify it. 004E84E6
3 Hack an enemy robot for a 75% chance to pacify it. 004E84E7

Bugs[edit | edit source]

PCIcon pc.png Xbox 360Icon xbox360.png In Fallout: New Vegas, if saving a game next to a robot, deactivate it, destroy that robot's limbs and load back, the robot is active but without any limbs. [verified]

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