| Author |
Message
|
| jackssmirkingrevenge |
 Posted: 05/01/2007 2:29 AM Post subject: Sentry Gun Project |
 |
|
aspiring machinist
Joined: 15 Mar 2007
Posts: 18051
32498.46 Spud Bux
|
|
| Back to top |
|
 |
|
|
|
| FreakyShotGlass |
| Posted: 05/01/2007 2:40 AM Post subject: |
|
|
Staff Sergeant
Joined: 02 Dec 2005
Posts: 114
204.26 Spud Bux
|
| There was a different one where the gun automatically aimed at anyone in its field of view and fired at them. I'll see if I can find some footage. It would be so cool to have enough skill to make this sorta stuff. Image a computer controlled Marble MG. |
|
| Back to top |
|
|
| jackssmirkingrevenge |
| Posted: 05/01/2007 2:52 AM Post subject: |
|
|
aspiring machinist
Joined: 15 Mar 2007
Posts: 18051
32498.46 Spud Bux
|
|
| Back to top |
|
|
| FreakyShotGlass |
| Posted: 05/01/2007 2:56 AM Post subject: |
|
|
Staff Sergeant
Joined: 02 Dec 2005
Posts: 114
204.26 Spud Bux
|
Yeah, those are the ones. They're insane.
I want one. |
|
| Back to top |
|
|
| origin unknown |
| Posted: 05/02/2007 15:23 PM Post subject: |
|
|
Colonel
Joined: 14 Apr 2007
Posts: 534
897.94 Spud Bux
|
|
| Back to top |
|
|
| spudzinger |
| Posted: 05/02/2007 17:03 PM Post subject: |
|
|
Sergeant First Class
Joined: 02 Feb 2006
Posts: 136
420.59 Spud Bux
|
| Although I can't see the videos (my school internet connection blocks Youtube) i assume you are talking about a human controlled bb gun. You could do this by attaching a bb gun to either a security camera that can be moved in multiple directions or to a servo setup. The easier way would be the security camera set up as youd only have to sight it in. The servo setup could probably be built by someone who has experience in R/C plane and model building. If you mean to have a robotic setup it would be much harder (I do some amatuer robotics) but could probably be achieved through a PIC microcontroller with the right motorized setup and some darn good sensors or software. But, that type of software is highly advanced and (if it could be bought at all) would be uber expensive. Don't mean to sound like a smart ass or anything, sorry if I did. Spud |
|
| Back to top |
|
|
| jackssmirkingrevenge |
| Posted: 01/23/2010 6:14 AM Post subject: |
|
|
aspiring machinist
Joined: 15 Mar 2007
Posts: 18051
32498.46 Spud Bux
|
After a lot of MW2 gameplay, one of my favourite features is the sentry turrets:
I did some quick digging around and found this software/hardware package available for a mere $150. I'm fine with making the turret and obviously weapon myself, it was the software element that was putting me off but it seems all sorted out here and available for a reasonable price, what does the board think?
Yes, I'm really trying to distract myself from trying out the cartridge combustion  |
|
| Back to top |
|
|
| JeffSinger |
| Posted: 01/23/2010 10:35 AM Post subject: |
|
|
Private First Class
Joined: 23 Jan 2010
Posts: 27
85.05 Spud Bux
|
|
| Back to top |
|
|
| POLAND_SPUD |
| Posted: 01/23/2010 11:26 AM Post subject: |
|
|
Lieutenant General
Joined: 13 Oct 2007
Posts: 4386
11899.05 Spud Bux
|
| hmmm it uses servos not step motors... how difficult would it be to convert it to step motors ? |
|
| Back to top |
|
|
| rp181 |
| Posted: 01/23/2010 11:43 AM Post subject: |
|
|
Brigadier General
Joined: 13 Dec 2007
Posts: 1115
1451.97 Spud Bux
|
Its actually not as complicated as it sounds.
Hardware is quite easy (if you went with a parallel port, RS232 would require an extra chip, USB even more chips).
Software is the major thing, It is difficult to pick out certain targets. I could do it if the target was against a white wall, but I would not know how to make it wok relaiblly with a background with multiple things. |
|
| Back to top |
|
|
| jackssmirkingrevenge |
| Posted: 01/23/2010 11:47 AM Post subject: |
|
|
aspiring machinist
Joined: 15 Mar 2007
Posts: 18051
32498.46 Spud Bux
|
| rp181 wrote: | | Software is the major thing, It is difficult to pick out certain targets. I could do it if the target was against a white wall, but I would not know how to make it work relaiblly with a background with multiple things. |
Have a look at these videos, it seems to be quite good at locating movement no matter what the background is. I'm going to get in touch with the guy and see what the options are.
| Quote: | | hmmm it uses servos not step motors |
I'm guessing it has to be like that since the point is to follow moving targets, not to get to a pre-set angle. |
|
| Back to top |
|
|
| POLAND_SPUD |
| Posted: 01/23/2010 13:00 PM Post subject: |
|
|
Lieutenant General
Joined: 13 Oct 2007
Posts: 4386
11899.05 Spud Bux
|
@jsr
I don't think there any difference between the two... meaning that technically they do the same thing
so ask him if it can be used with step motors... used ones are really really cheap
and AFAIK they are more powerful so you could build a sturdier turret and use heavier guns with it |
|
| Back to top |
|
|
| jackssmirkingrevenge |
| Posted: 01/23/2010 14:39 PM Post subject: |
|
|
aspiring machinist
Joined: 15 Mar 2007
Posts: 18051
32498.46 Spud Bux
|
Well, brand new servos aren't exactly expensive.
What I have in mind would be a high pressure BBMG (hit probability FTW  ) so it wouldn't really be that heavy, basically barrel, valve and BB supply, the air can come from a remote line. |
|
| Back to top |
|
|
| POLAND_SPUD |
| Posted: 01/23/2010 14:57 PM Post subject: |
|
|
Lieutenant General
Joined: 13 Oct 2007
Posts: 4386
11899.05 Spud Bux
|
| Quote: | | aren't exactly expensive | well yes but if they are limited to 180 deg only that means that either:
1. you've got limited field of fire
2. you've got limited accuracy
a small turret is going to be only slightly cheaper than a larger one... so why not spend that, let say, 20$ extra and build a turret that can be used with a lot of different guns ? uhmm at least that's teh way I would do it
hmm if you've got a solenoid valve then you only need two servos/step motors |
|
| Back to top |
|
|
| jackssmirkingrevenge |
| Posted: 01/23/2010 15:01 PM Post subject: |
|
|
aspiring machinist
Joined: 15 Mar 2007
Posts: 18051
32498.46 Spud Bux
|
| POLAND_SPUD wrote: | | you've got limited field of fire |
If I understood correctly the camera is fixed to the base, so your field of fire is limited to what the camera can see. If the camera is moving around the software can't tell between a moving target and the moving background. |
|
| Back to top |
|
|
|
|
