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- "Either something is wrong with my photoreceptors…or a ship is touching down over there."
- ―Teetee
Photoreceptors, also known as visual sensors, was a technical name for the optical sensors of a droid. They were the equivalent to an eye.[1] Numbers of photoreceptors could vary depending on the size and model of a droid. For instance, R2-D2 had one, while EV-9D9 had three. Many droids, like C-3PO, had two.[3] Some could have them in different areas. For instance, General Grievous' MagnaGuards had a built-in photoreceptor in their torso to allow them to fight without their heads.[4]
Appearances
- "The Queen's Bloom" — The High Republic: Tales of Light and Life (and audiobook)
- The High Republic: Quest for the Hidden City (and audiobook)
-
"Tales of Enlightenment: No Such Thing as a Bad Customer" — Star Wars Insider 217–218 (reprinted in Star Wars Insider: The High Republic: Tales of Enlightenment) - The High Republic: Cataclysm (and audiobook)
-
Star Wars: Young Jedi Adventures — "Junkyard Sleepover" - The High Republic: Light of the Jedi (and audiobook)
- The High Republic: A Test of Courage (and audiobook)
- "Starlight: First Duty" — Star Wars Insider 201–202
- The High Republic: Race to Crashpoint Tower (and audiobook)
- The High Republic: Mission to Disaster (and audiobook)
- The High Republic: Tears of the Nameless (and audiobook)
- The High Republic: Trials of the Jedi (and audiobook)
- The High Republic Adventures (2023) 16
- The High Republic – Fear of the Jedi 3
- "Tales from the Occlusion Zone: Out with a Bang" — Star Wars Insider 231
- The High Republic – Fear of the Jedi 5
- The High Republic Adventures (2023) 17
- The High Republic: A Valiant Vow (and audiobook)
- The High Republic Adventures (2023) 18
- The High Republic Adventures (2023) 20
- The High Republic – The Finale 1
- Star Wars Eclipse
- The Acolyte: The Crystal Crown
-
Star Wars: The Acolyte — "Lost / Found" -
Star Wars: Tales of the Jedi — "Justice" - Padawan (and audiobook)
- Jedi Knights 2
- Darth Maul (2017) 2
- Darth Maul (2017) 4
- Star Wars: Episode I The Phantom Menace
- Queen's Shadow (and audiobook)
- Star Wars: Episode II Attack of the Clones
- "Galactic Tales: Inheritance" — Star Wars Insider 211
- "Galactic Tales: From The Shadows Come The Kran" — Star Wars Insider 212
- Star Wars: The Clone Wars film
-
Star Wars: The Clone Wars — "Destroy Malevolence" - Star Wars: The Clone Wars — "Bombad Jedi"
- Star Wars: The Clone Wars — "Cloak of Darkness" (In flashback(s))
- Choose Your Destiny: A Clone Trooper Mission
- Star Wars: The Clone Wars — "Trespass"
- Star Wars: The Clone Wars — "Blue Shadow Virus"
- Star Wars: The Clone Wars — "Senate Spy"
- Star Wars: The Clone Wars — "Lightsaber Lost" (In flashback(s))
- Star Wars: The Clone Wars — "Voyage of Temptation"
- Star Wars: The Clone Wars — "Hostage Crisis"
- "Hostage Crisis" — The Clone Wars: Stories of Light and Dark (and audiobook)
- Star Wars: The Clone Wars — "Mercy Mission" (First identified as ocular sensor)
- Star Wars: Episode III Revenge of the Sith
- Master of Evil
-
Star Wars: The Bad Batch — "Rampage" - Adventures in Wild Space: The Escape (and audiobook)
- Adventures in Wild Space: The Cold (and audiobook)
- Servants of the Empire: Edge of the Galaxy
-
Star Wars: Andor — "Daughter of Ferrix" - Rise of the Rebels
- The Rebellion Begins
- Servants of the Empire: Rebel in the Ranks (Mentioned only)
- Servants of the Empire: Imperial Justice
- Servants of the Empire: The Secret Academy
- Battle to the End
- Thrawn: Alliances (and audiobook)
- "An Old Hope" — Life Day Treasury
- Rogue One: A Star Wars Story
- Star Wars: Episode IV A New Hope (First appearance)
- Star Wars: A New Hope junior novelization
- Escape from Darth Vader
- "The Red One" — From a Certain Point of View (and audiobook)
- Battlefront II: Inferno Squad (and audiobook)
- Smuggler's Run: A Han Solo & Chewbacca Adventure (and audiobook)
- The Weapon of a Jedi: A Luke Skywalker Adventure (and audiobook)
- Star Wars (2015) 26
- Doctor Aphra (2016) 30 (Indirect mention only)
- Choose Your Destiny: A Smuggler Mission
- Star Wars: Episode V The Empire Strikes Back
- "Eyes of the Empire" — From a Certain Point of View: The Empire Strikes Back (and audiobook)
- "Faith in an Old Friend" — From a Certain Point of View: The Empire Strikes Back (and audiobook)
- "Wait for It" — From a Certain Point of View: The Empire Strikes Back (and audiobook)
- Bounty Hunters 3
- Star Wars Outlaws
- Darth Vader (2020) 36
- Dark Droids 2
- Doctor Aphra (2020) 39
- Darth Vader (2020) 41
- Dark Droids 5
- Star Wars (2020) 41
- Moving Target: A Princess Leia Adventure (and audiobook)
- "Trooper Trouble" — From a Certain Point of View: Return of the Jedi (and audiobook) (Indirect mention only)
- Star Wars: Episode VI Return of the Jedi
- Star Wars: Return of the Jedi junior novelization
- Return of the Jedi: Beware the Power of the Dark Side! (and audiobook)
- Return of the Jedi – Jabba's Palace 1
- "Satisfaction" — From a Certain Point of View: Return of the Jedi (and audiobook)
- "No Contingency" — From a Certain Point of View: Return of the Jedi (and audiobook)
- The Princess and the Scoundrel (and audiobook)
- Alphabet Squadron (and audiobook)
- Shadow Fall: An Alphabet Squadron Novel (and audiobook)
- Victory's Price: An Alphabet Squadron Novel (and audiobook)
- Doctor Aphra – Chaos Agent 1
- Doctor Aphra – Chaos Agent 2
- Star Wars (2025) 3
- Last Shot (and audiobook)
- Hunters: Battle for the Arena (and audiobook)
- The Mandalorian Junior Novel (and audiobook)
-
Star Wars: The Book of Boba Fett — "Chapter 6: From the Desert Comes a Stranger" -
Star Wars: Skeleton Crew — "The Real Good Guys" - The Legends of Luke Skywalker (and audiobook)
- "High Noon on Jakku" (reprinted in Tales from a Galaxy Far, Far Away: Aliens: Volume I)
- "Bakurat" — Dark Legends (In flashback(s))
- "The Crimson Corsair and the Lost Treasure of Count Dooku" (reprinted in Tales from a Galaxy Far, Far Away: Aliens: Volume I)
- Hyperspace Stories—Codebreaker 2
- Hyperspace Stories—Codebreaker 3
- Star Wars: The Force Awakens: A Junior Novel (and audiobook)
- Join the Resistance: Attack on Starkiller Base (and audiobook)
- Star Wars Adventures Ashcan (In flashback(s))
- Star Wars: The Last Jedi: Expanded Edition (and audiobook)
- Star Wars: The Last Jedi: A Junior Novel (and audiobook)
- Star Wars: Droid Repair Bay
- Legacy of Vader 2 (In flashback(s))
-
Star Wars Galactic Pals — "Tauntaun" - Star Wars Galactic Pals — "Rancor"
- Star Wars Galactic Pals — "Porgs"
- Star Wars Galactic Pals — "Ortolan"
- Star Wars Galactic Pals — "Gungan"
- Star Wars Galactic Pals — "Loth-Cat"
-
"Tales from Wild Space: Alone in the Dark" — Star Wars Adventures (2017) 26 - The Jaws of Jakku (In flashback(s))
- Star Wars: The Rise of Skywalker: A Junior Novel (and audiobook)
- The Last Order
- Ghosts of Dathomir
Non-canon appearances
-
LEGO Star Wars: The Freemaker Adventures — "The Maker of Zoh" - LEGO Star Wars: The Freemaker Adventures — "Return of the Kyber Saber"
- LEGO Star Wars: The Freemaker Adventures — "Trouble on Tibalt"
- LEGO Star Wars: The Freemaker Adventures — "The Tower of Alistan Nor"
- LEGO Star Wars: The Freemaker Adventures — "The Embersteel Blade"
- LEGO Star Wars: The Freemaker Adventures — "The Storms of Taul"
- LEGO Star Wars: The Freemaker Adventures — "Return to the Wheel"
- LEGO Star Wars: The Freemaker Adventures — "The Lost Crystals of Qalydon"
- LEGO Star Wars: The Freemaker Adventures — "The Pit and the Pinnacle"
- LEGO Star Wars: The Freemaker Adventures — "Flight of the Arrowhead"
- LEGO Star Wars: The Freemaker Adventures — "A Perilous Rescue"
- LEGO Star Wars: The Freemaker Adventures — "Escape from Coruscant"
- LEGO Star Wars: The Freemaker Adventures — "Free Fall"
-
Star Wars: Visions — "Sith" - Fortnite — Star Wars: Droid Tycoon
Sources
-
Meet Chopper, Grumpy Astromech Droid | Star Wars Rebels on the official Star Wars YouTube channel (backup link) (Posted on StarWars.com) -
Star Wars Rebels: Meet Chopper, Grumpy Astromech Droid on StarWars.com (backup link) (Picture only) -
hyena bombers in the Encyclopedia (original site is defunct) - Star Wars Rebels: The Visual Guide
- Star Wars Helmet Collection: C-3PO Helmets: C-3PO, Protocol Droid
- Star Wars Helmet Collection: General Grievous Weapons & Uniforms: Imperial Droids
- Star Wars Helmet Collection: Commander Cody Databank A-Z: Hydroid Medusas–Imperial Academies
- Sabine My Rebel Sketchbook
- Star Wars Helmet Collection: Commander Bacara Databank A-Z: Dooku–Dwarf Spider Droids
- Star Wars Helmet Collection: Anakin Skywalker Weapons & Uniforms: Sebulba and Rival Pilots
- Star Wars Helmet Collection: MagnaGuard Helmets: MagnaGuard
- Star Wars: The Force Awakens: The Visual Dictionary
- Star Wars Helmet Collection: 4-LOM Helmets: 4-LOM
- Poe Dameron: Flight Log
- Art of Coloring: Rogue One: A Star Wars Story
- Star Wars Helmet Collection: 2-1B Surgical Droid Helmets: 2-1B Surgical Droid
- Star Wars: Build Your Own R2-D2 6 (First identified as visual sensor)
- Star Wars: Build Your Own R2-D2 7 Droid Directory: LOM-series Protocol Droids
- Star Wars: Build Your Own R2-D2 8 Droid Directory: Imperial Mark IV Sentry Droid
- Star Wars Helmet Collection: Commander Wolffe Databank A-Z: Wicket Warrick–Weequay
- Star Wars: Geektionary: The Galaxy from A - Z
- Star Wars: The Last Jedi: The Visual Dictionary
- Star Wars Encyclopedia of Starfighters and Other Vehicles
- Star Wars: The Complete Visual Dictionary, New Edition
- Star Wars: Droidography
- Star Wars Character Encyclopedia, New Edition
- Star Wars: Creatures Big & Small (Picture only)
-
LEGO Star Wars (Set: 75257 Millennium Falcon) - LEGO Star Wars (Set: 75250 Pasaana Speeder Chase)
- LEGO Star Wars (Set: 75249 Resistance Y-Wing Starfighter)
- Star Wars: Card Trader Set: 2020 Base Series, Card: BB-9E
- Star Wars: The Rise of Skywalker: The Visual Dictionary
- LEGO Star Wars (Set: 75273 Poe Dameron's X-wing Fighter)
- LEGO Star Wars (Set: 75278 D-O)
- "Imperial Troops" — Star Wars Encyclopedia (Picture only)
- "R2-D2" — Star Wars Encyclopedia
- Star Wars: The Lightsaber Collection (Picture only)
- "Republic, Rebel, and Resistance Starfighters" — Star Wars Encyclopedia (Picture only)
- The Art of Star Wars: The Mandalorian Season One
- The Mandalorian: Allies & Enemies (Picture only)
- "C-3PO" — Star Wars Encyclopedia
- Star Wars: The Mandalorian Handbook
- Tales of the Empire | Official Trailer | Disney+ on the official Star Wars YouTube channel (backup link)
- Star Wars Encyclopedia: The Comprehensive Guide to the Star Wars Galaxy
- Star Wars: The Acolyte: The Visual Guide
-
BB-9E in the Databank (backup link) - Hyena Bomber Droid in the Databank (backup link)
- WAC-47 in the Databank (backup link)