$30k a pop? Haha!! I would love to see ANYTHING at only $30k meet any of the government environmentals that it will be expected to survive.
Its a pretty movieā¦ but they very much appear clueless to government contracting. And I am speaking from a tiny bit of experience, being in that field myself. (unmanned vehicles for the Army)
As a Reconnaissance Soldier myself, I too think itās pretty funny. Although the price isnāt all that bad if it could do what it shows. Although itās size alone would be a huge drawback. Since you could tip a fridge in front of it and it wouldnāt be able to get past. lol
The gun is a Crossman M70 airsoft gun which shoots 6mm pellets. Unfortunately I wasnāt able to get it to fire very accurately becuase the recoil makes the servo struggle to hold position.
Here is an interesting website concerning the Crossman M70 gun and several links showing how to cut the gun down to a smaller size: tgi.net/~andrew/?p=22
Interesting. Originally I planned to mod the gun, however I decided not to for safety reasons. There are rules I have to follow when entering my local science fairs and all these rules must comply with CWSF (canada wide science fair). To make it there I have to follow these rules. 1 being not to modify guns/ammo(this is considered a gun by CWSF since you must be 18 to purchase it).
You would probably get better accuracy and control if the gun mount was ridgidly mounted to the bot and the gun tilted on the mount itself. Look at the below setup to see how to tilt a mounted object using a simple linkage. This would allow for much finer aiming and the gun would be steadier on the mount. Bottom is the UZI which might be more compact.
Thanks for the comments guys. Its too late to change my project for the science fairs, but I plan to continue with this project until I am satisfied with its performance. Its a project I am very fascinated in and will be complete when I say so
UPDATE: It is kind of a late announcement, however, last week the MARC took home a gold medal in my school fair. Iāve just completed my registry for my regional fair and if all goes well I may end up with a gold there as well a long with the grand prize to Ottawa for the Canada-Wide Science Fair (won that last year).
BTW: i just recently downloaded Google Sketchup and I must say it is very good! Its not exactly a 3-D imaging program like autocad, but it is very good for modeling chassisā etc. I highly recommend it to newbie CAD drawers.
Its pretty good however it isnāt to scale as I just learned how to measure lines etc using the tape measure tool. Over all a very good and user-friendly program.
You can do some pretty intense things with sketchup. Depends on how good you get at it. I hate that it doesnāt have drill points though. And it has serious issues with exporting DWG and DXF files.