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 Camden's confoundations

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Don Doerfler
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PostSubject: Re: Camden's confoundations   Wed Oct 31, 2012 1:09 pm

Try to rebind it
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Stephen
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PostSubject: Re: Camden's confoundations   Wed Oct 31, 2012 5:57 pm

so you lose control of drive.
or lose control of the weapon because we had a problem like that with our weapon . we just reprogrammed the esc
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Camden W
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PostSubject: Re: Camden's confoundations   Wed Oct 31, 2012 6:55 pm

Well this problem is all in the receiver, I hope. The orange light indicating it has power is what shuts off, but the servos still think they are getting a signal, because the lights continue to blink quickly instead of slowly like they do when they lose signal. Thankfully the drive motor shuts off when this happens, but it doesn't stop spinning for 20+ seconds.
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PostSubject: Re: Camden's confoundations   Thu Nov 01, 2012 12:58 am

yah thats wacky
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Camden W
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PostSubject: Re: Camden's confoundations   Wed Dec 12, 2012 5:04 pm



This is the update to spinook with the new motor mounting hole layout, and the three 300mah 1s batteries alex suggested
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Camden W
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PostSubject: Re: Camden's confoundations   Mon May 13, 2013 1:34 pm

WHEW! College is over for the summer!!! Spinook is waiting for its chance to kill something, and i'm in the middle of getting two jobs this summer.

But enough of that. I was thinking of moving up in the weight classes a bit, say maybe 3#. I noticed there are a lot more undercutters and verticals at this level, and it shouldn't be much more of a burden than 1# as far as cost.

I have a sketch in my head that I can't put on solidworks because my college license for it won't work at home. I'm not computer savvy and I don't know how to forward ports or whatever to access the servers to get onto solidworks.

Just wondering, what motors do most people use on their bots for a 4 wheel bot (2 larger or 4 smaller motors) and the weapon motor on an estimated 6-7" dia. 2# weapon? Planning to run 6s or more.
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Camden W
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PostSubject: Re: Camden's confoundations   Fri May 17, 2013 12:30 pm

Is this enough battery for a 3 pounder? http://www.hobbypartz.com/98p-30c-1200-6s1p-6666.html

with 4 33.3 silver sparks http://www.fingertechrobotics.com/proddetail.php?prod=ft-Sspark16

mounted on these (would integrate into structure of bot) http://www.fingertechrobotics.com/proddetail.php?prod=ft-bearing-block&cat=8

or these http://www.fingertechrobotics.com/proddetail.php?prod=ft-motor-mount

1 or 2 per tinyESC http://www.fingertechrobotics.com/proddetail.php?prod=ft-tinyESCv2

on 1.5" lectra lites http://www.fingertechrobotics.com/proddetail.php?prod=dav56xx


That takes care of drivetrain. Weapon motors abound, trying to decide between a pancake outrunner or inrunner, and whether I should use fingertech's hubs for the transfer system. I know Evan Steeves was working on a 3 lb FBS and integrated a belt tightening system into the chassis, though he is running belt driven tires off of 2 1000 rpm motors I think.

Any thoughts? What motor does Weta use?
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Camden W
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PostSubject: Re: Camden's confoundations   Mon May 27, 2013 11:28 pm

Just got a Heli-Max 1SQ Very Happy and modified it with paperclips.




Any good tiny cameras I could mount to it? It can carry about 30g of weight.
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Camden W
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PostSubject: Re: Camden's confoundations   Mon Jun 10, 2013 10:37 pm

I decided my flying skills improved enough to take off the paperclips. Then my friend flew it.  One of the motors seems to be damaged as it does not free-spin as well as the others. Still flies great and for 10-15 minutes per battery.  Eventually when I have time i'll get a few of those cameras for it.


Also, I found this little bugger behind the counter at the same time, and decided it was the smallest that a reciever would get, so battlebot Very Happy



Unfortunately, it didn't like to bind with my dx5e, but bound perfectly with my eflite MLP4DSM, soooo i'll just use the controller that came with my heli :3

i must troubleshoot the wire connections on one of the wheel ESC's, the light responds, but the motor does not.
So for now, spinook is stuck going in circles.  I found more (4) spare wheels for it, so that's always nice.


I need to get my hands on a shiny soldering iron with a sharp tip that actually works.

Any suggestions?

Also, .032" 7075 AL or .02" grade 2 Ti for ant baseplate?
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Camden W
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PostSubject: Re: Camden's confoundations   Sun Jun 16, 2013 8:10 pm

Update!! I ordered a economy iron from mcmastercarr along with some thin nylon washers to use as shims under the bot.  I decided to re-weigh the bot since i had been doing some mods to it, and it was only 15.5 oz!!!  so....




Boom.  Spinook now has 4 teeth and makes weight (I think. I have a crappy scale.) with a few extra bolts on the side.  When the iron arrives, i'm going to check and redo all the connections to make sure they are secure, though I forgot to get heat shrink tubing.

I found a problem: last spinup, I noticed smoke.  Upon closer inspection and a re-plug-in, more smoke of death.  It came from the weapon ESC and smelled of overcooked meat mixed with sulfur. No test runs till this problem gets solved D:





I burned out one of the six 8-pin thingies. What are these called? and are there any similar weight ESC's? the next step up, 12/18/20A, seems too wide to fit sideways in the bot...

It was a 10A cont. 12A burst Exceed RC proton ESC/BEC.  It seems my new motor pulls more than this under heavy load...


Last edited by Camden W on Sun Jun 16, 2013 9:15 pm; edited 1 time in total
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PostSubject: Re: Camden's confoundations   Sun Jun 16, 2013 9:04 pm

Looks sweet. Shame about the weapon ESC though. You ever going to a competition with this thing? Razz
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Camden W
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PostSubject: Re: Camden's confoundations   Sun Jun 16, 2013 9:24 pm

After I sort out all the bugs and one shows up within 5 hours of where I live, I will :3

Possible larger ESC layout:

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PostSubject: Re: Camden's confoundations   Sun Jun 16, 2013 10:31 pm

Interesting stuff on those things Oo

Anyway, looking into new ESC/BEC's.  Trying to find ones smaller than 22x22x8 mm with a switching BEC rated for at least 2A and a max current rating of more than 140 watts.


http://www.hobbyking.com/hobbyking/store/__11429__hobbyking_12a_blueseries_brushless_speed_controller.html
http://www.nanoplanes.net/esc.html#ztw12a
http://www.nitroplanes.com/60p-dye-1014-12a-esc.html
http://www3.towerhobbies.com/cgi-bin/WTI0001P?I=LXKSY3&P=8
http://www.hobbypartz.com/60p-dye-1014-12a-esc.html

Choices Choices
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Camden W
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PostSubject: Re: Camden's confoundations   Fri Jun 28, 2013 8:14 pm

My new scale just arrived!!! in 3 days!  500g capacity accurate to .01g for $22!!

Looks like spinook can't compete with 4 blades unless I take out a screw somewhere..




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PostSubject: Re: Camden's confoundations   Fri Jun 28, 2013 11:10 pm

That first pic with only 2 blades on it?

Definitely a nice looking scale.  My 500g one is tiny, makes it tough to read.
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Camden W
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PostSubject: Re: Camden's confoundations   Sat Jun 29, 2013 11:27 am

first pic has 4 blades on it
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MikeNCR
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PostSubject: Re: Camden's confoundations   Sat Jun 29, 2013 11:44 am

Camden W wrote:
first pic has 4 blades on it

 454g=1lb
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zwtipp05



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PostSubject: Re: Camden's confoundations   Sat Jun 29, 2013 12:36 pm

Camden W wrote:
first pic has 4 blades on it

 As mike said 1 lb =~454g, so looks like youre good to go!
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PostSubject: Re: Camden's confoundations   Sat Jun 29, 2013 1:08 pm

1000 grams / 2.2 = ?

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Camden W
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PostSubject: Re: Camden's confoundations   Sun Jun 30, 2013 4:54 pm

well then looks like i can get an esc that weighs 4g more Razz
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PostSubject: Re: Camden's confoundations   Thu Jul 04, 2013 3:12 pm

Update!  The bearings I ordered from boca still haven't arrived, it's been nearly 3 weeks.

The washers I got are made of a hard rubbery material and basically turn into vibration dampening o-rings, adding maybe .3mm to the height of the screws.  They weigh .023g each. (I had to put 10 on the scale and it read .23g  It didn't notice them until 6 were on there)




I redesigned the weapon hub to incorporate four 5x8x2.5 bearings holding onto the deadshaft, and have another based around a larger flange bearing.  I still have to figure out how to make solidworks run while not connected to my college's server...



This is what happens when metric meets ANSI



Current main bearing: http://www.bocabearings.com/bearing-inventory/Radial-Bearings/3149/12x18x4-MF6701ZZ    gives me roughly a 8mm dia X 11mm dia pulley system on the weapon.  (1.375:1)

Would have 4 of these: http://www.bocabearings.com/productdetail.aspx?ItemID=2393&StoreID=1
or 2 of these: http://www.bocabearings.com/productDetail.aspx?ItemID=15184

This one: http://www.bocabearings.com/bearing-inventory/Radial-Bearings/872/15x21x4-SMF6702ZZ    Would give me a 8 x 13.5 pulley.  (1.69:1)




Next on the repair list is the weapon ESC.  Deciding between

2 HK 12A blueseries: http://www.hobbyking.com/hobbyking/store/__11429__hobbyking_12a_blueseries_brushless_speed_controller.html

1 ZTW 12A brushless ESC: http://www.nanoplanes.net/esc.html#ztw12a

The HK's are 1/2 as much, but the ZTW has a switching frequency. What exactly does this do?

I did a little searching online and ax-men and found no FET's easily available, so I guess I can't repair the broken one for now...

I modified the baseplate and top plate a little bit, and am thinking of trying AL for the base.




My batteries look worn out, looking at these:
Rhino 460MAH: http://www.hobbyking.com/hobbyking/store/__7304__Rhino_460mAh_3S_11_1v_20C_Lipoly_Pack.html

Zippy 500MAH: http://www.hobbyking.com/hobbyking/store/__6791__ZIPPY_Flightmax_500mAh_3S1P_20C.html

Gens ace 450MAH: http://www.hobbypartz.com/98p-25c-450-3s1p.html

It seems that if my bot is pulling 13A from the motors, it will only last ~ 2 1/2 minutes.  It usually lasts 5-7 mins so it would seem it is averaging 5-6 Amps of power...so it seems that keeping the weapon going consumes about 65 watts of power continuously,  with a peak load of roughly 150 watts.






Still haven't purchased a charger, waiting for

Sky charger B6AC+: http://www.hobbypartz.com/skychb6chdup.html

Or this off-brand one: http://www.hobbyking.com/hobbyking/store/__6478__IMAX_B6_AC_Charger_Discharger_1_6_Cells_GENUINE_.html




Pololu got some new motors: http://www.pololu.com/catalog/product/2364

These are MV, they draw half the stall current of HP motors, but have nearly the same torque.  This could help keep my electronics from frying due to too much current running through servo leads.

A friend of mine had some legos in his room he was planning to get rid of, so I got 5 extra wheels from him Very Happy




A few things I saw while I was at ax-men:  shrinkwrap (yesss), tiny needle pliers (1/2 inch nose), slimy squishy balls (silica gel), and a mini torx wrench set (T5-t8)

These two modular screwdrivers are able to unscrew everything on my bot (except the main deadshaft)  t8 wrench for low heads, 2.5mm for larger heads, ph0 phillips for wheel motor mounts, 2.0 flathead for a tiny brass screw holding down a corner of the weapon motor.


Spinook will see combat as soon as a competition is nearby. I will not let another one slip through my grasp because of lack of transportation.


Also, SLIMY SQUISHYYY!!!



It would be a great help if you guys told me what you would pick of each item choice I am looking at for upgrades Smile
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Camden W
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PostSubject: Re: Camden's confoundations   Sat Jul 13, 2013 7:06 pm

Update!

My 12A ESC arrived, it weighs 1.9g more (10.27g) than the other one, but fits in the new layout I made. It comes with a piece of paper.  The specs said it was 22x21x6,  but those were just for the board.  Including the capacitor, it's actually 30x22x6.5. It still fits though :3

I have yet to begin testing, as I need to rewire my batteries and such,  and since we moved, There are no flat surfaces other than the wood floor in the kitchen. soooo i dunno yet.

Upon starting up the motor, it reaches peak with no problems, the ESC is aweseome :3

That's when i noticed a loose magnet in the motor D:

and the only superglue i have is more viscous than honey.
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Camden W
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PostSubject: Re: Camden's confoundations   Fri Aug 23, 2013 12:34 am

Got supahgluuueeee!!  thin and thick stuff, I used thin to put the magnet(s) back in place (3 of them were loose D:)

Also, new ESC and all the other stuff in my bot was stuffed into place.

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PostSubject: Re: Camden's confoundations   Fri Sep 06, 2013 3:57 pm

Saw you registered for Mecha Mayhem. Good luck dude :3
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PostSubject: Re: Camden's confoundations   Fri Sep 06, 2013 5:04 pm

I found a ride to and from the competition. However, I have not found a place to stay D:

Also, I need to repair the drive esc or get a new one. the weapon works perfectly though, and everything fits at 452.3g!


Also, spare parts include extra battery and screws. I should get on that problem Razz


Finish-drilled through weapon hub and stuffed 3 bearings into it for extra strength. it runs smooooth. though the thrust bearing has a little friction.

Random booty video:

I discovered the event has housing for competitors, so spinook is going!!!
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