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Little Blue - Mini ITX Autonomous Boat Brain - Page 7

post #61 of 254
LOL, the title is awesome! wth.gif Nice to see something completely outside of the box.... well I would guess on the water is about as far as it gets.

Eager to see what you have in store buddy.
post #62 of 254
Look awesome wink.gif

I hope we will do something similar in like 3-4 years, when I will be at the end of my program. We will have to do a project.


Good luck with your prodject
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post #63 of 254
I'm a Virginia Tech student doing a LOT of work with UAV's. I was going to guess a USV. I do have to ask, though, why didn't you go with something like a PC104 or some Gumstix? We use a lot of PC104's...it seems like they're practically designed for autonomous vehicle applications.
 
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post #64 of 254
Thread Starter 
Quote:
Originally Posted by Lutro0;15034304 
LOL, the title is awesome! wth.gif Nice to see something completely outside of the box.... well I would guess on the water is about as far as it gets.

Eager to see what you have in store buddy.

haha, yea, project should be pretty cool.
Quote:
Originally Posted by Lee17;15034326 
Look awesome wink.gif

I hope we will do something similar in like 3-4 years, when I will be at the end of my program. We will have to do a project.

Good luck with your prodject

thanks!
Quote:
Originally Posted by victorzamora;15034329 
I'm a Virginia Tech student doing a LOT of work with UAV's. I was going to guess a USV. I do have to ask, though, why didn't you go with something like a PC104 or some Gumstix? We use a lot of PC104's...it seems like they're practically designed for autonomous vehicle applications.

We will be using three Arduino boards, which are essentially what you are talking about, in conjunction with the computer. The primary reason we are not just using the Arduinos is because they lack sufficient processing power and support for the vision processing.

we will be using two USB cameras to help navigate the course and recognize certain features like colored bouys. The navigation logic will actually be handled on the Arduino Ardupilot Mega . The computer will be used to analyze vision data from the cameras whenever the LIDAR detects a buoy or the coastline and for complimentary computation to take the data from the 7-8 other sensors we are using and collate it into a single usable position and velocity vector.
post #65 of 254
I'm doing my senior design for my BS in MEM this year, as well. It's a robotic micro air vehicle with flapping wings based on a beetle.

Also, sub'd.
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post #66 of 254
Why do you need to watercool it? are you going to overclock your boat?
    
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post #67 of 254
He needs to watercool it to avoid the issues with the original boatputer, in that it overheated frequently, this should avoid all potential for overheating, and provide the boost in processing power they are looking to obtain. My only question for you, is if you are dunking the radiator (I presume you are) are you considering the extra drag that will be added by the radiator? Or are you keeping the radiator above surface and letting the speed of the boat rush air through the radiator? I could see the drag of the radiator being considerable underwater... unless you maybe tied it into the normal cooling of the motor (before it enters the motor obviously)
    
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post #68 of 254
Thread Starter 
Quote:
Originally Posted by tippy25;15034709 
I'm doing my senior design for my BS in MEM this year, as well. It's a robotic micro air vehicle with flapping wings based on a beetle.

Also, sub'd.

that sounds way cooler than my project... I am jealous now. :-P
Quote:
Originally Posted by iCrap;15036129 
Why do you need to watercool it? are you going to overclock your boat?

no overclocking. the water cooling is because the computer is going to be locked inside a waterproof box, which means no airflow. so we need some way to dissipate the heat from the computer outside of the box.
Quote:
Originally Posted by Xaero252;15036220 
He needs to watercool it to avoid the issues with the original boatputer, in that it overheated frequently, this should avoid all potential for overheating, and provide the boost in processing power they are looking to obtain. My only question for you, is if you are dunking the radiator (I presume you are) are you considering the extra drag that will be added by the radiator? Or are you keeping the radiator above surface and letting the speed of the boat rush air through the radiator? I could see the drag of the radiator being considerable underwater... unless you maybe tied it into the normal cooling of the motor (before it enters the motor obviously)

yea, I know it would cause drag, and we have in fact not decided if we will be submerging the rad or not. it will most likely be above the surface and cooled by air.

if we do decide to submerge it though, it wouldn't be a problem. the two electric props we have on the boat are WAY more powerful than they need to be and the boat goes TOO fast even with them at 30% power. added drag would actually be a benefit...
post #69 of 254
Neat project, Kevin. thumb.gif

So the computer itself is going to run off a jet ski battery?
post #70 of 254
Thread Starter 
I started to do a dry assembly of the computer to make sure everything worked

the temporary case:

296715_10150307391921363_600936362_8491142_262987785_n.jpg

303214_10150307391961363_600936362_8491143_1807456948_n.jpg

309678_10150307392011363_600936362_8491144_1316168310_n.jpg

303054_10150307392061363_600936362_8491145_421257921_n.jpg

start with the CPU:

293577_10150307392086363_600936362_8491146_464543731_n.jpg

311946_10150307392131363_600936362_8491147_1079282498_n.jpg

292725_10150307392166363_600936362_8491148_826819786_n.jpg

315035_10150307392201363_600936362_8491149_571402701_n.jpg

311612_10150307392231363_600936362_8491150_219497258_n.jpg

299486_10150307392306363_600936362_8491152_1871672727_n.jpg

305140_10150307392376363_600936362_8491154_1074615074_n.jpg

300884_10150307392416363_600936362_8491156_1735873349_n.jpg

299446_10150307392491363_600936362_8491160_213854751_n.jpg

291722_10150307392531363_600936362_8491162_2086258491_n.jpg

304690_10150307392581363_600936362_8491164_93466575_n.jpg

299256_10150307392636363_600936362_8491166_466122903_n.jpg

using the stock heatsink for now to make sure everything works:

309359_10150307392661363_600936362_8491167_1239523447_n.jpg

297828_10150307392681363_600936362_8491168_890628490_n.jpg

in the "case" tongue.gif :

298648_10150307392696363_600936362_8491169_1407906725_n.jpg

plug in the HDD:

300564_10150307392716363_600936362_8491170_987750972_n.jpg

297803_10150307392741363_600936362_8491171_612150562_n.jpg

a little momentary switch I had laying around for the power button:

295713_10150307392771363_600936362_8491172_1599984406_n.jpg

and this is when I realized I had a problem with the power.

The power supply I had my professor order has not arrived yet, so I was just going to use one I had laying around from a mini build I did years ago for the time being:

307768_10150307756166363_600936362_8492171_1728483825_n.jpg

these power supplies are freaking cool.

318327_10150307756236363_600936362_8492172_786348969_n.jpg

and here is where I realized I may have a problem:

313922_10150307756286363_600936362_8492173_775015555_n.jpg

301944_10150307756346363_600936362_8492174_352931935_n.jpg

sure enough, when I double checked, I had the school order one that was 20-pin instead of the 24-pin the motherboard needs.

I have since told my professor about my mistake and he says that it will take a bit of paperwork, but we will be getting one of these:

M4-ATX-2.jpg

http://www.mini-box.com/M4-ATX-HV

not as awesomely tiny, but WAY more useful and powerful. It has active battery level monitoring and will shut down if the battery gets below a certain voltage, and even can connect through USB so you can monitor the voltages and power draw of each rail on the PSU. I am pretty stoked to use it.
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