Doom3: Project Mars City Worklog
There will no doubt be a flurry of Doom3 themes this year and next, so I thought I'd add my project to the mix. Project Mars City will be fun to build with lots of kitbashing for that military/industrial Doom3 look. Expect lots of armor, mesh, lighted machinery, pressure doors, plumbing, and maybe a few sculpted animatronic beasties.
This case will be a Doom3 gaming MONSTER, DangerDen watercooled, and top of-the-line hardware and components that have yet to be determined. I have an Antec Super Lanboy to use as a base, since it's very lightweight, and the kitbashing/structural enhancements will add enough strength to this otherwise flimsy case.
Since Mashie and I are both working on Doom3 inspired cases, we set up a Live ModCam so anyone interested can see the projects as they progress. Please no complaints if the cameras aren't up 24/7--we are working on getting a dedicated server. Live ModCam
I'm making a base unit for that Antec case, with Mars terrain--i.e rocks and craters--it will also house the optical drive. I need to free up the 5.25 drive bays for the video monitor that will be integrated--probably a Xenarc, earthlcd or equivalent.
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Here is the start of the base that will have a Martian terrain look. It will also house the optical drive and a few other goodies :D
I found a motorized 7" LCD screen meant for in-dash applications. The LCD is a Panasonic OEM, so it should be pretty good. Anyone know of other brands I should look into?.
http://www.mp3playerstore.com/stuff_...al/TM-7300.htm
After speaking with a friend today who was kind enough to spend some time and give great ideas, i took some screenshots for inspiration. Mr. Nervous lead me in the direction of a 3/8" hose watercooling setup, so I will go with DangerDen blocks and pump for the system. There will be lots of elements from the game as far as look and feel, plus some imagination thrown in. There are so many directions a mod like this can take, but after speaking with D he thought the case itself would be cool if represented as one of the building installations on Mars, with a few water cooling parts outside the case and then slithering their way inside.
The Antec case at this point is just a shell, having popped most of the rivets and drive cages offm and will hardly be recognized once completed.
Any ideas are welcomed, this should be lots of fun to join in on! :D
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The finishing touches are a couple of custom made waterslide decals
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I finally have time to finish this monster of a case so lets get to it!
Plenty of details need to be added to the side panels, so I began filling in the sparse areas with some Plastruct architectural pieces and some parts from my scrap bin. I also have a chance now to try out the new Iwata Eclipse airbrush I bought last week. Should be a decent upgrade to the Passche workhorse I have been using for years.
Small (1/4" NPT) copper elbow was used here:
This area will take lots of hand painting and airbrushing as you can see. The magic is in the details:
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Adding just the right amount of detail is really important when scratchbuilding and kitbashing on a project like this. It's easy to add too much detail, creating a confusing pallet of shapes that simply adds confusion to the overall look. Picking the right parts for kitbashing comes from lots of trial, error and experience, and literally hundreds of rejected parts and configurations pile up before I commit to gluing them on. Even then I may rip pieces off if it doesn't seem to fit later on as the work progresses.
Tamiya models are among the very best kits you can buy. The detail is amazing, and the quality of their molds are unsurpassed for producing clean, crisp injection molded parts. Although pricey, these kits have been used for kitbashing by master model makers for years--even back to the first Star Wars. If you come across any production shots of the ILM (Industrial Light & Magic)model shop, you'll be sure to find dozens of boxes of Tamiya military kits in the background.
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I finally found a solution to making the blast doors and airlock open--make linear actuators from old cdrom drives! RC Servos just dont have enough travel in the arms to open the doors I made properly, so by taking the high torque gears and motor that open and close the tray to a CDROM, voila, a linear actuator. I have a short video showing how it works, I'll get it up asap.
Here is a shot of the motor assembly disassembled that will be mounted to that tambour style blast door that covers the LCD on the front of the case:
This pancake motor is perfect because it is of course, 3-5VDC reversable. It's also designed to last a long time:
Here is the track assembly. The plastic geared "track" was taken from the CDROM tray and mounted on my aluminum rail:
The slide assembly has a built-in spring (inside the round alum tube) to prevent the motor from sliding off the geared track when it reaches the ends of the travel. The springs also make sure that the main motor gear is always in contact with the first tooth of the geared track, and ready to move in the opposite direction:
Here is the unit assembled:
Here is where it will be mounted inside the blast door structure:
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Here is some video of the door after i installed the actuator:
Blast Door (DivX)
Blast Door (Win media)
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Mechanical airlock? OK!
This nice little challenge is finally complete from a mechanical standpoint. The motors from a CDROM would not be powerful enough to open and close these airlock doors, so the logical replacement would be to use hobby servos. For those of you familliar with these high torque gear boxes, you know some of them pack serious strength--
What I did was create another linear actuator to open and close the doors. Unfortunately the standard servo arms only rotate 45 degrees, and this would not give me enough linear "travel" along the gear bar to open and close my airlock doors. Hmmm..
Solution was to use these specialized servo motors called "retract servos"--these are used to raise and lower the landing gears on flying model aircraft. Not only do they rotate 170 degrees, they also have a higher torque rating than standard servos--perfect for what I need.
You can see I created a "scissor" type mechanism to open and close the airlock doors--sometimes the most elegant solutions are the most basic in design--I had to be extremely accurate with measuring/cutting/drilling in creating this mechanism, and it took some serious tuning to get it running like buttah. The entire mechanism is very robust, so it should last for years without needing adjustments.
I'll have a video up ASAP showing the doors in action
Enough gab, on with some pics:
You can see that i also made the cut-out for the 120mm Panaflo fan--Airlock opens, fresh air comes in--Here is the airlock module bolted onto the case. I'll be making a housing to cover the scissor mechanism, as well as all the wires for the servo and lighting:
Here is the mechanism, top view. All painted and plastic parts (and gears) are lubricated with Lithium grease, as anything petroleum based would eat the plastic:
Here you can see the Hitec HS-75BB Retract Servo, and b\gear bar i took from a CDROM tray. The gear on the servo is also taken from the CDROM motor, then it was mounted with tiny screws onto a standard servo wheel:
Inside the airlock, I did some kitbashing and scratchbuilding to add details to the back of the doors--Inside will be a light fixture (red LED) as well, pics for that coming up soon:
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Here's a short video showing the motorized airlock in action. The retract servo is controleld by a small single channel servo controller board that runs at 5v DC. The airlock LED light changes to red once it is fully opened and then to white when closed--i may change this to green but i didnt have any on hand.
Airlock Door DivX
Airlock Door Windows media
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Here is a shot showing the case mocked up thus far--Just a bit of scratchbuilding, wiring, watercooling, lighting and hardware installation left to do--and of course--some airbrushing and hand painting :)
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Worklogs should be fun!--In that spirit, here is a short video showing some airbrushing work :)
Servo Mechanism Cover: [3:41] winmedia wmv format
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Here are a couple pics I took a few weeks ago during painting and final assembly:
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The power block simply makes putting this complex mod together much easier. It gives me a break point in the power line so the case itself can be removed from the rocky base that holds the SATA CDROM and harddisk..
These dual 60mm fans help cool off the Fujitsu 15kRPM drive.
Here is the exhaust fan for the base unit.
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I decided to do away with many of the mechanical switches and buttons on the mod and go for solid state with an IR remote control--because how cool is RC??-- :D I picked up a 12 Channel IR Relay Board (in kit form) and assembled it in about 2 hours. The nice thing about this board is that you can have an on/off configuration on the channels or momentary switching, or a combination of both. To test it out I hooked it up to the blast door module--works like a charm.
Here is the air intake vent for the HDD cooling fans. This scratchbuilt piece uses some styrene sheet, modder's mesh and two copper plumbing elbows. To get the subtle shading in the paint, first it was airbrushed, then hand detailed and finaly a soft shading with Doc Browns' weathering powders applied with a sable brush. This is pretty much how I painted the entire mod.
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Whew!...alright it looks like its finally in the home stretch--Nothing more to build, just paint and assemble--easier said than done--although since the entire mod is built around modules, everything should fit right into place. Lots of wiring to do as well--but its 99% done overall. Here are some pics from last weeks build:
Etched pentagram window in its frame with LED lighting. Basically its 6 ultrabright red lamps wired in parallel:
Here is the roof module during painting. The cover caps off the roof nicely and includes 2x 120mm fan vents for the Black Ice pro radiator.
Here you can see that i curved the interior of the roof module to allow for airflow off the radiator:
The Antec case is really small for a mid-tower, so I built an extension for the rear of the case. This allows me to push the PC Power & Cooling 510 SLi PSU out the back about two inches, giving me preciuous room inside for wire managment and components. The round holes on the extension piece are for PSU fan exhaust, an 80mm fan and a hole for the water pump. This estension piece also conceals all the typical messy wires on the back of the PC :
There is even a hinged door for access to the I/O panel of the motherboard.
Once its all painted up and weathered, I'll take individual pics of all the components before assembly to show all the parts.
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After 15 months, I'm 99.9% done....!!! There will be an official page up soon on Newegg.com that will have really good shots of the case as well as plenty of video and other good stuff--stay tuned and thanks to all for sticking with me and helping out with this huge project--more to come soon!
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