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| Light Gun Interface |
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| exibar:
nope, no luck getting one, for development. I have had a few people let me know that they'd be very happy to donate via PayPal for me to purchase one to write the driver. I've had thoughts about this, with Act-Labs supposedly coming out with a new gun very soon, is getting the ULGI working with MAME still something that we all feel would be a good idea? I have a box full of Arcade light guns in my garage that I bought from E-bay. I don't know how many of them work or not, but I'm sure at least one will work... My cabinet sitting there really really wanting a gun or two added to it but if it's just a matter of waiting a month and buying the new act-labs gun, that might be the way to go. Anyway, let me pose this question to the group. Is there enough interest in getting the ULGI working to warrent the time to write the driver? the Board is $160.00, plus you'd have to buy the lightgun(s). Mike B |
| PacManFan:
--- Quote from: exibar on November 14, 2004, 10:00:37 pm ---nope, no luck getting one, for development. I have had a few people let me know that they'd be very happy to donate via PayPal for me to purchase one to write the driver. I've had thoughts about this, with Act-Labs supposedly coming out with a new gun very soon, is getting the ULGI working with MAME still something that we all feel would be a good idea? I have a box full of Arcade light guns in my garage that I bought from E-bay. I don't know how many of them work or not, but I'm sure at least one will work... My cabinet sitting there really really wanting a gun or two added to it but if it's just a matter of waiting a month and buying the new act-labs gun, that might be the way to go. Anyway, let me pose this question to the group. Is there enough interest in getting the ULGI working to warrent the time to write the driver? the Board is $160.00, plus you'd have to buy the lightgun(s). Mike B --- End quote --- I think paying 160$ + the cost of lightguns is way too much for a working lightgun setup. I'm positive there must be a better way to interface authentic arcade lightguns to a pc with a simple driver board and software. Would you be willing to loan me a gun to develop with? I've done lots of hardware interface projects with USB before, including a PIC based rotary interface simular to Druins. I understand the technology behind the lightgun interface, and I believe I know how to make it work. Basically, here's my proposed setup: 1) light gun is connemcted to a small microcontroller device, like a PIC or AVR 2) computer is connected to the TV/Arcade Monitor/VGA monitor. 3) in between monitor and computer, there is a connection off of the sync line. 4) the sync line goes to the microcontroller and interfaces with a LM1881 sync separator chip. This device splits the composite sync into separate TTL level Hsync and Vsync lines. 5) When the user points the gun at the screen and pulls the trigger. The microcontroller starts a hi-speed timer. 6) the timer keeps incrementing until light is recieved through the optosensor in the gun. 7) based on the time the trigger was pulled and the time the light was recieved, the microcontroller calculates the delay. 8) using the hsync and the vsync counts, the microcontroller determines proportunatly where on the screen the gun is pointing. 9) the microcontroller then generates the x/y mouse signals for this position and triggers the "click". Another variation of this is to make the screen go white when the trigger is pulled to help the gun determine the position. So, what do you think, will you loan me a lightgun? -PMF |
| exibar:
IM sent... |
| Minwah:
I'd almost definately rather have a real arcade gun / interface than an Act labs gun... But do Act Labs have a new model gun coming out then? |
| AndyWarne:
I am planning to look into the possibility of interfacing the Namco-type gun to a PC. The Namco gun is different to most because it uses a number of sensors mounted around the screen edge. There is a disadvantage of having to mount the sensors but the advantages would be worth it, because there would be no need for any white flash when firing, and a mouse cursor would follow the gun around the screen if visible, ie in Windows. I will be starting to look at this in a couple of weeks. Andy Warne |
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