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Comments on Robotic Sentry Gun From USMechatronics
Two brothers build an autonomous robotic sentry gun as a summer project. (Read the complete story)

"They had these in the Director's Cut of Aliens."
(Jeff 12/6/2005 8:50:07 PM)
"Wow, if Aaron and Eric Rasmussen are reading this. Good job guys. Has it been tested on a real gun? I'm no expert, but I'm sure the kicback is probably not the same as compared to a BB gun."
(gid 12/7/2005 8:33:15 AM)
"Check out Aliens the Directors cut for some really cool sentry guns."
(Baseline 12/7/2005 10:29:35 AM)
"Does it have IFF? How does it avoid shooting friendlies?"
(Michael 12/7/2005 11:44:15 AM)
""Aliens" had these. D"
(Dave 12/7/2005 12:21:14 PM)
"the movie aliens in the origianl cut had automatic sentry guns"
(jeff schwenneker 12/7/2005 6:28:34 PM)
"Robocop Patrolling Sentries"
( 12/7/2005 9:43:00 PM)
"From the website: "I'd only ever seen sentry guns in movies (like Congo) and video games (Half-Life 1, Half-Life 2, Team Fortress Classic)" Hm....there was this fairly unpopular movie with a fairly unpopular scene called 'Aliens'...but those couldn't have been the first....could they?"
(AnonymosCoward 12/8/2005 11:19:44 AM)
"The movie ALIENS features robotic sentry guns. ALIENS is akin to Heinlein's STARSHIP TROOPERS, although I do not recall the novel having such hardware."
(Metryq 12/11/2005 8:24:36 AM)
"sentry guns were used in the film aliens 2"
(Nicholas Etges 12/11/2005 5:37:43 PM)
"That is preety cool"
(Zac F 12/14/2005 6:49:11 AM)
"aside from the ALIENS sentry guns, their hand held heavy weapons, the smart guns, could be set to automatically correct their aim within a cone in front of the gun. This usually targets the center of mass, resulting in a ragged hole in the COM but the marines turned it off so they could rock and roll. This is my favorite weapon in the video game aliens v/s predator"
(vince 12/21/2005 4:14:44 AM)
"Joe Haldeman's novel Forever War features an automated laser defense system. "
(Allen 12/21/2005 11:20:20 AM)
"Micheal Crichton published this idea in 1969, before Congo, in the book "The Andromeda Strain". In the climactic scene, the protagonist must travel up a ladder in a maintenance tunnel protected by sentry guns which fire tranquilizer darts."
(Paul 12/22/2005 12:11:17 PM)
"Although they were cut from the theatrical release of "Aliens", you can find scenes of a robotic gatling-gun sentry mowing down dozens of aliens in the director's cut special edition."
(Ned Whiteaker 12/22/2005 5:34:50 PM)
"Need Help in creating arms? I GOT YOU!"
(De Renzo 12/28/2005 9:22:36 PM)
"There is a sentry gun in sci fi....the special edition of aliens (20th centry fox) 1986....for futer information on this also cheack out the u.s colinal marines technical addition to this some automated guns were featured in tom clancy's splinter cell video game series"
( 1/5/2006 10:22:45 AM)
"Aliens (the director's cut) also features automated sentry guns."
(Thomas Ryba 1/16/2006 5:56:34 PM)
"It also was used in the movie "Aliens" by the Space Marines to keep the bad dudes away (until it ran out of ammo), plus various "B" movies since then."
(SgtBill49 1/22/2006 9:08:02 PM)
"'s Ezra Rasmussen, btw."
(Varenka 1/23/2006 11:55:26 PM)
"I am a student at Sauk College in Dixon and we are about to try about the same type of weapon I was wondering if you have any more information that you can pass on to me Thank you e-mail "
(jeff boyungs 1/27/2006 8:31:47 AM)
"Harry Harrison's Deathworld."
( 2/12/2006 1:39:31 PM)
"Sentry Guns were also seen in the Deleted Footage of James Camerons ALIENS, where they guarded a corridor."
( 2/14/2006 10:41:17 PM)
"Fully automated sentry guns are also referenced in John Shirley's "A Song Called Youth" trilogy, specifically in "Eclipse Corona"."
( 2/15/2006 7:53:42 AM)
"Well, this brings to mind the sentry guns from Aliens 1986 ("
(Tyrone 2/16/2006 12:29:04 PM)
"I like how nobody actually reads the other comments. Oh well. They had sentry guns in Aliens."
(Dan 2/19/2006 11:16:35 PM)
"watch aliens. the marines had automated sentry guns to kill the monsters. another place you can go is the metalstorm home page. an Aussie company that uses buble jet technology to fire weapons instead of ink for area denial technology that ranges from non to totally lethal levles. its cool check it out @ movies of the actual thing working its great."
(rick cramer 3/8/2006 12:23:55 PM)
"is this crap real could we be going to the new era of the future "
( 3/14/2006 9:39:01 AM)
"Not an original idea: such a gun was in Alien [1979] (or Aliens [1986], the sequel). They set an automated gun up in the hallway, to stop an oncoming onslaught of aliens down the cooridor and buy them some time. It was wicked cool, directed onto its target by infrared heat targetting, and had LED counters on the amount of ammo left. Great scene of it fireing of continuously and the LEDS counting down and then hitting zero.... "
( 3/15/2006 7:21:47 AM)
"In some versions of the movie "Aliens II," when the good guys are holed up in the laboratory, they set up robotic sentry guns in a passageway to guard against the aliens. They work great until they run out of ammo. (I've seen versions of the movie that have this scene, and versions that don't)"
( 3/15/2006 9:19:13 AM)
""I was sure it would be easy to find early references to this kind of device in science fiction, but I'm stumped." This type of weapon was well depicted in "Aliens", the Director's Cut."
(Alias 3/15/2006 11:38:21 AM)
"I think everyone's driven it into the ground - Aliens was a very cool movie."
(MovieViewer 3/15/2006 4:20:53 PM)
"The earliest use of a completely automated sentry gun in science fiction that I can recall was in a movie - Aliens."
(drink 3/15/2006 4:40:25 PM)
"In the Special Edition "Aliens" VHS and laserdisc releases (dunno about DVD), several deleted scenes show four "Centurion" robotic sentry guns. The following comes from: # During Hick's discussion of the equipment salvaged from the APC wreckage, additional dialogue has been added in which he discribes the four remote sentry guns and how they can be used. # When Ripley and the Marines examine the colony's blueprints, discussing how they will barricade themselves inside the complex, there is some additional dialogue referring to the strategic placement of the sentry guns. # The sequence of Hicks arming the sentry, and Hudson and Vasquez testing one of the sentry guns has been restored. # Before the scene where Ripley carries Newt into the infirmary, a single show of the sentry guns has been inserted. #After Ripley's confrontation with Burke, the sequence involving the aliens attempting to make their way past the sentry guns in the service tunnel has been restored. # After Vasquez and Ripley seal Bishop in the pipe, the aliens confront the other two sentry guns that have been set up in the colony corridors. At the end of the sequence, when Hicks dispatches Hudson and Vasquez (to walk perimeter), some of the shots have been rearranged from the theatrical edition and Hicks' dialogue slightly altered."
(Aqua Regia 3/15/2006 7:48:43 PM)
"If anyone has played any of the Half Life Series games. They use Sentry Guns as well and it gives background information. Rememeber it doesn't take long to have soldiers carry an IFF (Identify Friend or Foe) tag for it to differentiate bewteen targets."
( 3/15/2006 8:41:38 PM)
"nice concept.. A real gun would rip your kit apart. -you need strength,speed and a zoom lens to ID the bad guys -no good at night you need a thermal imager also. -geuss if you use windows it would kill everyone HA ! -and you need IR detection or simular so it does not shoot trees and shadows that move. "
(mr black 3/15/2006 8:51:50 PM)
" my site I put up //99% of the people In the U.S. have no knowledge of high temperature point focus solar thermal concentrators At a time when the feds want nukes which are 17% of world power to be 40% of world power by 2050.A Ukranian astronomer named Victor Vasylyev has patented a unique solar concentrating array better than parabolic mirrors The reflective lens allows for the economical distribution of high temperature solar thermal devices among residential and commercial Environments. Using a gang aiming system developed by low profile lazy susan hot air multiple lenses with thermal storage can significantly alter the worlds energy future I started understanding that the world trade center was a controlled demolition about 6 weeks before the 2004 presidential election fraud SCHOLARSFORTRUTH THIS SITE HAS A LOT OF EXCELLENT FEATURE VIDEOS ONLINE FREE\LIKE 911eyewitness where Richard Segal sets up a camera with audio on a dock in N.J.1.8 mi. from the event and get the explosions in the basement before the buildings fall In the released fireman interviews of august 2005 MANY HEARD AND SAW BOMBS SEQUENTIALLY EXPLODING the original site that I found by goggling for wtc7 6 weeks before the 2004 presidential election fraud//very thorough Site that the gov. is trying to attack in various ways//my site about solar is which has my e-mail and home phone on it sent to me by peter phillips of project censored at sonoma state a friend recently gave me this dvd which for documenting the explosions is excellent this is the company that cleaned up the wtc site without doing any forensics //THESE ARE SUBJECTS IT APPEARS MOST PEOPLE HAVE NO KNOWLEDGE OF REGARDS JOSEPH PERKINS OF"
(joseph perkins 3/16/2006 8:38:01 AM)
"In the directors-cut of the movie Aliens they use a sim ilar sentry gun"
(Luke Faulkner 3/19/2006 6:12:27 PM)
"Piff, the best they could come up with was that atrocious movie (congo) Try the badass robot guns from the unedited version of Aliens, the puppies slaughtered scores of bugs. "
(Tainted1 4/4/2006 10:52:31 PM)
"they were in the movie ALIENS, too"
( 4/9/2006 3:19:22 PM)
"HOLY S***"
(Schoulayer 4/19/2006 10:13:18 PM)
"Wasn't there an automated gun system used in the second Alien movie? Two were set up in a corridor where their motion sensors could blast away at anything entering their 'kill zone'. I remember that they worked effectively until the ammo ran out and the Aliens kept coming."
(bfr699 4/29/2006 10:25:04 AM)
"There were sentry guns in one of the scenes on the DVD of Aliens. The scene was cut from the film."
(David James 5/13/2006 8:23:47 AM)
"There were sentry guns in Aliens!!!11!1!1!!!"
(Alien 6/27/2006 7:02:59 AM)
"I use to make sentrys some where pretty cheap I use to kill clones on one I found that a pice of gum would react to them and move a plunger, turrent acquire a vital and fire either a bullet or high power laser beam threw the toad man."
(Paul 8/19/2006 11:13:43 AM)
"Also about the movie I think I contacted the production to have it installed into the movie. For some reason after thirty years of depending upon them for your life it gets annoying that no one has ever mention one it becomes frustrating so I contacted this one guy he came up with alot stuff to put into the movie he did a lot of research on whats possible."
(Paul 8/19/2006 11:17:20 AM)
"If you are interested in this story, read this update:
Update 10-Oct-2006: Be sure to take a look at the recent South Korean robotic sentry gun to be put into use next year."
(Bill Christensen 11/12/2006 10:44:39 AM)
"Guys, guys, you're missing the point! Robotic sentries are just a way to avoid putting real, thinking, humans on the defense point; after all those sentries might get hurt! This comes from a long time movement to remove the apparant risk from warfare (and in doing so, make it less abhorrent). Where do you think the idea of robotic warplanes came from? There are any number of problems with this idea, not the least of which is the limited discriminatory powers of the robots in question. Even real police and soldiers have been known to shoot at movements or sounds without checking to see if they are civillians. This weapon system is another that will likely result in more civillian casualties than military ones. It falls within the realm of such unthinking child killers as mines and cluster bombs. How would you like it if your nine year old was shot by one of these because they were playing too close to a sensitive area such as a nuclear plant, transformer farm, telephone switching station etc.... We need to temper our enthusiasm for sexy SciFi technology with the possible real consequences."
(Dave 11/23/2006 8:07:50 AM)
"Rest in peace, E"
(g 6/30/2008 5:42:38 PM)
"His name is Ezra, and tomorrow is his one year since he left us. res in piece buddy. He was a genius at 16."
(A 6/19/2009 1:34:30 PM)
( 7/24/2009 11:37:44 PM)

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