Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: gaurav.p on August 24, 2009, 03:11:09 AM

Title: FAST LINE FOLLOWING
Post by: gaurav.p on August 24, 2009, 03:11:09 AM

hello,
i wanna build a fast line follower .i m planning to use maxon motors and use lipoly batteries.i hav got the motors and gear heads ,but i can't get the battery packs.i m willing to buy a battery pack  Lithium polymer (LiPoly) 7.4 V nominal / 8.4 V max rechargeable batteries. Either 340 mAh or 880 mAh will do.can anyone know where to get these batteries of these spec.than in advance

regards,
-gaurav

Title: Re: FAST LINE FOLLOWING
Post by: Soeren on August 24, 2009, 03:30:11 AM

Hi,

When your question is about batteries, how smart do you yourself think it is, to use "FAST LINE FOLLOWING" as the subject then?

Title: Re: FAST LINE FOLLOWING
Post by: gaurav.p on August 24, 2009, 03:40:52 AM

sorry for that ........can u suggest me something

Title: Re: FAST LINE FOLLOWING
Post by: Rick Brooks on August 24, 2009, 04:22:18 AM

I was thinking of exactly the same project.

I'll be using these:

http://www.maxamps.com/Lipo-430-111-Pack.htm (http://www.maxamps.com/Lipo-430-111-Pack.htm)

    Rick Brooks

Title: Re: FAST LINE FOLLOWING
Post by: SmAsH on August 24, 2009, 04:39:37 AM

those are 11V1... he said maximum of 8V4...

@gaurav, do they have to be li-poly or can they be li-po?

Title: Re: FAST LINE FOLLOWING
Post by: Finnik on August 24, 2009, 05:51:28 AM

Smash, li-poly is the the same as li-po, both an abbreviation for lithium polymer.

Title: Re: FAST LINE FOLLOWING
Post by: SmAsH on August 24, 2009, 06:04:52 AM

once again my inability to google has resulted in my embarrassment :P

anyway, check out
http://www.all-battery.com/li-polyerbatterypacks.aspx
http://www.societyofrobots.com/robot_parts_list_battery.shtml

Title: Re: FAST LINE FOLLOWING
Post by: Rick Brooks on August 24, 2009, 04:28:41 PM

gaurav,

It's a good thing that you used the subject "Fast Line Following" otherwise I'm sure that I would not have read your post.

I'll be making my line follower based on my mini sumo caller "ExSpurt" http://brooksbots.com/ExSpurt.htm (http://brooksbots.com/ExSpurt.htm) except I'd like to use a Propeller for control.  ExSpurt has a top speed of about 100 inches per second.  So far I've been able to controll ExSpurt at 67 inches per second with a Basic Stamp and no PID.  It should be interesting.

Keep me posted on your progress.

        Rick Brooks

Title: Re: FAST LINE FOLLOWING
Post by: blackbeard on August 24, 2009, 04:38:11 PM

http://www.dealextreme.com/details.dx/sku.10783


this what you want?

Title: Re: FAST LINE FOLLOWING
Post by: gaurav.p on August 25, 2009, 07:29:55 AM

i m presently inquring about the batteries to tenergy and as soon as i get the reply from those guys ,i will finally decide what to buy .
hey ricks the wheels used by u in ur robot r the ones i m finding for .can u tell from where can i get it .

regards,
gaurav

Title: Re: FAST LINE FOLLOWING
Post by: Rick Brooks on August 25, 2009, 05:18:04 PM

gaurav,

You will have to make the wheels yourself.  See http://brooksbots.com/ExSpurt%20Tires.htm (http://brooksbots.com/ExSpurt%20Tires.htm)

Make sure that your battery can supply 2 to 3 amps per motor.

Are you planning on two motors or four?

       Rick Brooks

Title: Re: FAST LINE FOLLOWING
Post by: gaurav.p on August 27, 2009, 01:50:48 AM

i m planning for two and i m sad that i don't hav a lathe to make the tires:(

-gaurav