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Info on how Terminator salvation gun works

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Howard_Casto: --- Quote from: thet0ast3r on December 02, 2019, 08:32:34 am ---I don`t know why you are so confident that the wiimote and the aimtrak use only 1 light to track their position, when they clearly track TWO, 2. --- End quote --- Actually they track up to 4.  The wii/wii u only use two though.  This is well documented online in the wiibrew wiki.  I don't know why people ignore me.  I'm a frikkin programmer, I've wrote software that use the wiimotes.  I've kind of given up steering people in the right direction at this point since they don't want to listen.

Zebra: --- Quote from: thet0ast3r on December 02, 2019, 08:32:34 am ---I don`t know why you are so confident that the wiimote and the aimtrak use only 1 light to track their position, when they clearly track TWO, 2. There even is a test program in the wii software that lets you check if all two light sources of the bar still work. As for the aimtraks, if you take a look at their pcb-only bar, they also clearly have two independent light sources. There is no system out there that has only one light source. I still don`t quite get what leaves you thinking that the GC3 has no ir camera in the gun. I have EMS topguns and they clearly have ir cameras in them. they aren`t even covered or anything, just mounted in the nozzle. Ill agree that an IR laser pointer should be the most cost effective AND accurate method at the same time, but expanding this system for two or more players is harder, since most people don`t like having multiple visible, colored dots on their screen most of the time. --- End quote --- I'm not confident on how any of them work internally beyond what I can see when I open them up and how they perform when used (for the ones I've tried). I'm not positioning myself as an expert. I don't read code like Howard or have any extra access to manufacturers designs. I can just see distinct hardware designs and therefore that they work differently but, for the most part, I don't understand the significance of the differences in hardware. I currently own an Aimtrak, a Wii with Wii remotes, a Guncon 3 and a Sega type 2 gun set-up. What I know for sure (which ain't much) is that the Guncon 3 is noticeably more accurate than the Wii or Aimtrak and it uses two sensor cubes positioned at each screen edge with 3 LEDs in each, facing in different directions. The Wii and Aimtrak use one sensor bar with 2 or 4 LEDs all facing the same direction. Beyond that it's all just guesses. The Sega Type 2 / Time Crisis 4 guns are the ones that have sensors instead of a traditional camera. It looks like some kind of photo diode with an IR filter. I'm going through the set up process now for my PC. I don't know how these work either. Just that it uses 10 or 12 led boards with two LEDs on each and that the order matters. I.e. If you mount sensor one in position nine you lose accuracy, Plus, it has 6 cables going in and out of each, which is more than is needed for power. My assumption is that there is a mechanism to sense which LED boards the gun is pointing at. Nothing else makes sense. Someone here asked Andy at Ultimarc why there isn't a two sensor version of the Aimtrak to make it more accurate. The answer essentially said there was no mechanism for the gun to distinguish two sensor bars from each other so adding a second would make it less accurate. From that, I assume the Guncon 3 must be able to distinguish between the right and left sensor bars so it knows which one you are pointing at, or it would have the same issue. As far as I know, nobody here has concrete info on how the various arcade IR guns work or, at least not enough to replicate the design for a diy version. If I'm wrong on this, it would make me happy and save me a fortune. I posted the info on the Raw Thrills guns as I thought it might help the guys here who are working on diy IR gun designs. BTW, The Terminator Salvation method is not my info / guesswork. It's described in Raw Thrills manual. It's clearly a different design to the Sega, Namco, Aimtrak and Wii remote. It uses a simple camera module though so I thought maybe the design could be replicated.

thet0ast3r: Hey Zebra, Do you have a complete assembly of sega type II ir guns? If yes, could you do some testing with external ir sources and occlusion of 1 or multiple of the 12 ir leds? like what happens when you add ir leds to one side of the ir array, and or what happens if one starts to cover up multiple ir leds. I`d really love to know how they deal with this kind of stuff, when they only have a "4 pixel ir camera" in the gun.

Zebra: --- Quote from: thet0ast3r on December 06, 2019, 05:55:49 am ---Hey Zebra, Do you have a complete assembly of sega type II ir guns? If yes, could you do some testing with external ir sources and occlusion of 1 or multiple of the 12 ir leds? like what happens when you add ir leds to one side of the ir array, and or what happens if one starts to cover up multiple ir leds. I`d really love to know how they deal with this kind of stuff, when they only have a "4 pixel ir camera" in the gun. --- End quote --- I do have a complete set. They only work with the correct number of led boards and that number is linked to the game you got the I/O board from. I.e, if you use a BD gun sense board from Jurassic Park, it uses 12 led boards, the rest only work with 10 (although some apparently have a switch to use 10 or 12). You can't try removing led boards from the set-up as they are all linked together with 6 wires going in and 6 wires going out. All have to be connected for it to work and they have to be in the correct position and order. If you put board 10 in the board 1 position it makes it go a bit nuts on-screen. The position of each led board is prescriptive as it uses their known locations to calculate where you are aiming and, where the edge of the screen is. If you covered some of the led boards, it would mess up your calibration. My (limited) understanding is that it works more like the proximity sensors used in security lights than a camera. This makes sense when you think about the output which is a simple X Y analog signal of 0-5v for each axis. I.e. 0v is one side, 5v is the opposite edge with every position in between being somewhere on that scale. With 10 or 12 reference points, you could see how your proximity to each led board could provide fairly accurate coordinates after you calibrate the gun.

krizalid00: some of you know how the analog pistol works like that of aliens extermination, I want to make it work with the new games that recently came out like lets go island, I have everything working but I can't make the selenoid the recoil work, if they could orient me :dunno

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