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Fish (Admin)
 Post subject: LiPo Wars!
PostPosted: Fri Mar 19, 2010 1:26 pm 
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8)
Attachment:
LiPo.JPG
LiPo.JPG [ 53.95 KiB | Viewed 2074 times ]


Are any words really necessary here? :wink:

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SN96
 Post subject: Re: LiPo Wars!
PostPosted: Fri Mar 19, 2010 2:19 pm 
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Fish (Admin) wrote:
8)
Attachment:
LiPo.JPG


Are any words really necessary here? :wink:


9000... do I hear 9000mAh? :lol:

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Spartan001
 Post subject: Re: LiPo Wars!
PostPosted: Fri Mar 19, 2010 2:22 pm 
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Do i hear 16000: http://www.all-battery.com/74volt-16ahh ... 31187.aspx ?

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Fish (Admin)
 Post subject: Re: LiPo Wars!
PostPosted: Fri Mar 19, 2010 2:28 pm 
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Spartan001 wrote:
Do i hear 16000: http://www.all-battery.com/74volt-16ahh ... 31187.aspx ?

That's all good and well, but the one I posted will actually fit in our robots. :roll: :lol:

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Curiously enough, the only thing that went through the mind
of the bowl of petunias as it fell was "Oh no, not again."

James "Don't call me Jim" Frye
Lynxmotion, Inc
http://www.lynxmotion.com
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zenta
 Post subject: Re: LiPo Wars!
PostPosted: Fri Mar 19, 2010 2:52 pm 
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:shock:
what!...
:evil:



:lol:

No words necessary James...

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[b]Kåre Halvorsen, Zenta[/b]
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Robot Dude
 Post subject: Re: LiPo Wars!
PostPosted: Mon Mar 22, 2010 3:39 pm 
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I wanted to ask here what are the most popular regulators out there for 7.4vdc LiPo in, to 6.0vdc output, capable of delivering 10 amps? Working with Basic Micro for a solution. Looking for examples and for a wish list from users.

  • Adjustable output from 5.5vdc to 6.5vdc.
  • Auto cut-off for LiPo minimum discharge voltage protection.
  • Pretty blue power LED.

Feedback is welcome!

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Robot Dude
 Post subject: Re: LiPo Wars!
PostPosted: Mon Mar 22, 2010 3:42 pm 
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First complete charge/discharge cycle. The thing did better than advertised. 8432mA delivered! :shock: 8)

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zenta
 Post subject: Re: LiPo Wars!
PostPosted: Mon Mar 22, 2010 4:12 pm 
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Robot Dude wrote:
I wanted to ask here what are the most popular regulators out there for 7.4vdc LiPo in, to 6.0vdc output, capable of delivering 10 amps? Working with Basic Micro for a solution. Looking for examples and for a wish list from users.

  • Adjustable output from 5.5vdc to 6.5vdc.
  • Auto cut-off for LiPo minimum discharge voltage protection.
  • Pretty blue power LED.

Feedback is welcome!


First, the regulator must be a switch regulator, not linear (to much waste of energy).
I believe I've mentioned the Turnigy regulators several times now. :roll:
Image

I've been using them for several years now, and they seem to work ok.
But I would like to have an auto cut-off feature and also some sort of audio feedback when the voltage are getting close to critical. Adjustable threshold would also be great since some 2S LiPo's allow discharge voltage down to 5,6v. And 10 amps continuously would be great!

Maybe adjustable output voltage up to 7,4v since a top charged 2S LiPo deliver <8,4 volt, I'm not sure if a high end digital 7,4 volt servo can handle a fully charged 2S LiPo ?

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[b]Kåre Halvorsen, Zenta[/b]
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Zenta's YouTube channel
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zenta
 Post subject: Re: LiPo Wars!
PostPosted: Mon Mar 22, 2010 4:14 pm 
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Robot Dude wrote:
First complete charge/discharge cycle. The thing did better than advertised. 8432mA delivered! :shock: 8)


stop it! :evil:






:wink:

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[b]Kåre Halvorsen, Zenta[/b]
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Zenta's YouTube channel
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Robot Dude
 Post subject: Re: LiPo Wars!
PostPosted: Mon Mar 22, 2010 4:24 pm 
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Here is an image of the battery inside the 3DOF T-Hex chassis. :D It's a tight fit... 8)
Attachment:
thexbtry.jpg
thexbtry.jpg [ 609.03 KiB | Viewed 2011 times ]

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SN96
 Post subject: Re: LiPo Wars!
PostPosted: Mon Mar 22, 2010 4:30 pm 
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Robot Dude wrote:
Here is an image of the battery inside the 3DOF T-Hex chassis. :D It's a tight fit... 8)
Attachment:
thexbtry.jpg


Oh my! .... That looks REALLLLLY good! :shock:

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Robot Dude
 Post subject: Re: LiPo Wars!
PostPosted: Mon Mar 22, 2010 4:48 pm 
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zenta wrote:
First, the regulator must be a switch regulator, not linear (to much waste of energy).
I believe I've mentioned the Turnigy regulators several times now. :roll:


Yeah I know, thanks for posting. I'm also looking for what others have used. ;)

zenta wrote:
I've been using them for several years now, and they seem to work ok.
But I would like to have an auto cut-off feature and also some sort of audio feedback when the voltage are getting close to critical. Adjustable threshold would also be great since some 2S LiPo's allow discharge voltage down to 5,6v. And 10 amps continuously would be great!

Maybe adjustable output voltage up to 7,4v since a top charged 2S LiPo deliver <8,4 volt, I'm not sure if a high end digital 7,4 volt servo can handle a fully charged 2S LiPo ?


Thanks for the cool ideas. 8)

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http://www.lynxmotion.com
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Robot Dude
 Post subject: Re: LiPo Wars!
PostPosted: Mon Mar 22, 2010 4:51 pm 
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Here are a couple images of the 3DOF T-Hex. I did get the wires under control. I did get the foot switches installed, but not wired. I did make a windshield for fun. lol I still need to upgrade to aluminum servo horns. There is a video in the works. Hopefully a little better than the last one. ;)

Attachment:
thexbtr2.jpg
thexbtr2.jpg [ 378.93 KiB | Viewed 2005 times ]


Attachment:
thexbtr3.jpg
thexbtr3.jpg [ 481.83 KiB | Viewed 2002 times ]

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zenta
 Post subject: Re: LiPo Wars!
PostPosted: Mon Mar 22, 2010 5:43 pm 
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Joined: Thu Nov 09, 2006 5:46 am
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Location: Norway
:shock:
--
8)
--
:twisted:

Wow! You did a great job Jim. I'm not envy at all about that tiny LiPo...

...ok ok.... That battery was just perfect for T-Hex. Where can I buy one? :lol:

Those led made the magic! Great pictures, looking very good!

BTW, How is the 4DOF version going?

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[b]Kåre Halvorsen, Zenta[/b]
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Zenta's blog
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Zenta's YouTube channel
http://www.youtube.com/ZentaOlbaid
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mannyR7
 Post subject: Re: LiPo Wars!
PostPosted: Mon Mar 22, 2010 6:04 pm 
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Location: Mesa, AZ
I like Castle Creations switching regulator. Takes up to 25V in and 4.8 to 9V out at 10 amp peak. It comes factory-set at 5.1V which is perfect for my onboard camera. Adjustment is via 'External USB interface' sold separately.

I also like the MPI 6V reg, but I solder both set of leads-in together, to get the max current possible.

Wish List:
1. Lipo CUTOFF!!! Noisy robots, remote piloting and too many blinky LEDs means any kind of warning device(s) do not always work.
2. Inline power switch
3. 10 amp continuous is nice
4. No screw terminals please! Heavy Duty wire (16g min) soldered firmly to the board.
5. Maybe reverse polarity protection.
6. No hacking or additional purchase necessary to adjust output.
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