Doom3: Project Mars City (Comments Only)

[DuX]

Awsome work Crimson Sky, but your worklogs only available in English. I am from Russia and I am thinking about translating your MarsCity Worklog, would you mind if i do that. Excuse my languige and spelling.

[Crimson Sky]

Awsome work Crimson Sky, but your worklogs only available in English. I am from Russia and I am thinking about translating your MarsCity Worklog, would you mind if i do that. Excuse my languige and spelling.

Sure no probelm--

[Crimson Sky]

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:

Linear Actuator1

This pancake motor is perfect because it is of course, 3-5VDC reversable. It's also designed to last a long time:

Linear Actuator2

Here is the track assembly. The plastic geared "track" was taken from the CDROM tray and mounted on my aluminum rail:

Linear Actuator3


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:

Linear Actuator4

Linear Actuator5

Linear Actuator6

Here is the unit assembled:

Linear Actuator7


Here is where it will be mounted inside the blast door structure:

Linear Actuator8

Linear Actuator9

[weirdguy]

I would've never thought to use an old Cd rom!

[Crimson Sky]

Here is some video of the door after i installed the actuator:

Blast Door (DivX)


Blast Door (Win media)

[Matthew]

Aha...thats amazing...I was laughing to my self while reading how you did everything...you just...well...awsome

[MrSlacker]

that video is so cool!

[toast07]

is the wobcan on anymore?
if so when?
and btw thats awsome

[Boddaker]

That is sweet how it works. It almost opens TOO fast! Maybe if you put a slightly bigger gear on that would slow it down a bit... or would that speed it up? Well, you get my drift!

[Crimson Sky]

That is sweet how it works. It almost opens TOO fast! Maybe if you put a slightly bigger gear on that would slow it down a bit... or would that speed it up? Well, you get my drift!

I might throw a potentiometer on there to see if lowering the voltage will slow it down--it may not open at all, but I'll try. Its currently opens at the same speed as a CDROM tray The speed doesnt bother me at all