rhrtlog: 02/27/09 17:51 >< JOIN : #rhrt
#rhrt: 02/27/09 17:52 <tommost> Gah, it took me forever to notice that wasn't there.
#rhrt: 02/27/09 17:52 <tommost> chtr: Did you have time for tuning the gains?
#rhrt: 02/27/09 17:52 <chtr> tommost: no, i didn't
tommost: 02/27/09 21:28 >< QUIT : "He left it dead, and with its head / He went galumphing back."
jboticsource: 02/27/09 23:08 >< JOIN : #rhrt
#rhrt: 02/27/09 23:08 <chtr> kleinjt: do you recall what pins on the molex connector i said were what?
#rhrt: 02/27/09 23:08 <chtr> oh actually, nevermind
jboticsource1: 02/27/09 23:17 >< JOIN : #rhrt
jboticsource: 02/27/09 23:17 >< QUIT : Read error: 104 (Connection reset by peer)
jboticsource: 02/27/09 23:36 >< JOIN : #rhrt
jboticsource1: 02/27/09 23:36 >< QUIT : Read error: 54 (Connection reset by peer)
jboticsource: 02/27/09 23:37 >< PART #rhrt :
#rhrt: 02/28/09 00:07 <kleinjt> chtr: I recall putting it on the wiki :P
#rhrt: 02/28/09 00:07 <chtr> i don't recall seeing it when i looked...  so i just checked another schematic
tommost: 02/28/09 01:32 >< JOIN : #rhrt
tommost: 02/28/09 01:45 >< QUIT : Remote closed the connection
tommost: 02/28/09 01:46 >< JOIN : #rhrt
jboticsource: 02/28/09 15:15 >< JOIN : #rhrt
#rhrt: 02/28/09 15:15 <jboticsource> tommost: are you enjoying your break?
#rhrt: 02/28/09 15:15 <tommost> Yup.
#rhrt: 02/28/09 15:15 <jboticsource> how big are the sumo bots slated to be?
#rhrt: 02/28/09 15:15 <jboticsource> 6 x 6 in?
#rhrt: 02/28/09 15:16 <tommost> Hm... let me find those rules again.
#rhrt: 02/28/09 15:16 <tommost> http://circ.mtco.com/competitions/2009/rules/sumo
#rhrt: 02/28/09 15:17 <tommost> We'll do 3kg.
#rhrt: 02/28/09 15:17 <tommost> Er, no, mini.
#rhrt: 02/28/09 15:19 <tommost> I won't be getting a whole lot done over break, unfortunately.  I'm at a friend's house in Louisville, so I don't have tools or anything.  And my Arduino didn't make it to Rose in time.
#rhrt: 02/28/09 15:19 <jboticsource> :(
#rhrt: 02/28/09 15:20 <jboticsource> I am going to work on the mechanical design of my bot
#rhrt: 02/28/09 15:20 <chtr> so we're having a sumo competition?
#rhrt: 02/28/09 15:20 <tommost> Well, jboticsource and I are building robots.
#rhrt: 02/28/09 15:20 <jboticsource> maybe it will spring into a competition
#rhrt: 02/28/09 15:20 <jboticsource> with more people etc
#rhrt: 02/28/09 15:20 <chtr> it should.
#rhrt: 02/28/09 15:20 <chtr> pick a date and send an email to all.campus
#rhrt: 02/28/09 15:21 <jboticsource> lets get the bots working first :)
#rhrt: 02/28/09 15:21 <chtr> why?
#rhrt: 02/28/09 15:21 <jboticsource> because I don't want to work under a hard deadline for getting these bots operational
#rhrt: 02/28/09 15:21 <tommost> Yeah.
#rhrt: 02/28/09 15:22 <tommost> I want our first priority to be our big project.
#rhrt: 02/28/09 15:22 <chtr> well, if it's going to spring into a competition, wouldn't you want everyone to have the same amount of time to work?
#rhrt: 02/28/09 15:22 <jboticsource> not at this stage
#rhrt: 02/28/09 15:22 <kleinjt> it would look bad if we lost
#rhrt: 02/28/09 15:23 <tommost> :)
#rhrt: 02/28/09 15:24 <chtr> kleinjt: what's the eagle part for those cool pushbuttons, like what the arduino has?
#rhrt: 02/28/09 15:25 <kleinjt> chtr: why would I know? I'd look if sparkfun sells something simillar, then check the sparkfun libraries.
#rhrt: 02/28/09 15:26 <chtr> good plan
#rhrt: 02/28/09 15:26 <chtr> oh, awesome, sparkfun's switched to using the digikey packing material
#rhrt: 02/28/09 15:27 <kleinjt> it looks like they've got a smd and through hole mini pushbutton switch
#rhrt: 02/28/09 15:27 <kleinjt> both in the library
#rhrt: 02/28/09 15:28 <chtr> yeah, i see that.
#rhrt: 02/28/09 15:28 <chtr> is the library you committed to lbr/ the most recent sparkfun library?
#rhrt: 02/28/09 15:28 <kleinjt> likely not
#rhrt: 02/28/09 15:29 <chtr> ah, TAC_SWITCH.
#rhrt: 02/28/09 15:29 <kleinjt> it looks like the only part the version in SVN is missing is an analog joystick
#rhrt: 02/28/09 15:30 <chtr> that
#rhrt: 02/28/09 15:30 <chtr> 's unacceptable
jboticsource: 02/28/09 17:54 >< QUIT : Read error: 104 (Connection reset by peer)
jboticsource: 02/28/09 17:55 >< JOIN : #rhrt
#rhrt: 02/28/09 18:00 <jboticsource> tommost: the motors from lynxmotion are too big to fit into a design that is 10 x 10 cm without adding lots of complexity.  What would your thoughts be to making the design 15 x 15 cm
#rhrt: 02/28/09 18:01 <jboticsource> ?
#rhrt: 02/28/09 18:01 <tommost> I'd be okay with that, since I already have those motors.
#rhrt: 02/28/09 18:06 <jboticsource> what motors are you using exactly?
#rhrt: 02/28/09 18:06 <jboticsource> tommost: I was looking at these because they are cheap and compact: http://www.lynxmotion.com/images/data/ghm04.pdf
#rhrt: 02/28/09 18:08 <jboticsource> tommost: these are a bit more expensive, $30 instead of $20, but have more torque and are larger
#rhrt: 02/28/09 18:08 <jboticsource> http://www.lynxmotion.com/Product.aspx?productID=250&CategoryID=11
#rhrt: 02/28/09 18:09 <jboticsource> that one does not accept an encoder though....
#rhrt: 02/28/09 18:09 <tommost> Mine are most like the first ones you posted, except that they don't have the encoder shaft at the back.
#rhrt: 02/28/09 18:10 <tommost> I can't remember what their specs are.
jboticsource1: 02/28/09 18:59 >< JOIN : #rhrt
jboticsource: 02/28/09 18:59 >< QUIT : Read error: 104 (Connection reset by peer)
#rhrt: 02/28/09 22:16 <jboticsource1> tommost: I have a basic mechanical design now.  Can you link me to some batteries that we will use?
#rhrt: 02/28/09 22:16 <tommost> Uh...
#rhrt: 02/28/09 22:17 <tommost> I have some cell phone battery packs that I was thinking of using, if I procure a charger for them.
#rhrt: 02/28/09 22:18 <jboticsource1> on the mechanical specs of the motor, there are two dimensions that are not specified.  One of them is how long the the front section of the motor is, and the other is how deep the metric screws plunge into the motor face
#rhrt: 02/28/09 22:19 <tommost> All of the team's battery packs seem to have died (they puffed out).
#rhrt: 02/28/09 22:19 <jboticsource1> once I know how deep those holes are, I can find metric screws to mount them to the structure
#rhrt: 02/28/09 22:19 <jboticsource1> picture of robot prototype on its way
#rhrt: 02/28/09 22:20 <tommost> Cool.
#rhrt: 02/28/09 22:34 <jboticsource1> afs is failing for me right now
#rhrt: 02/28/09 22:35 <jboticsource1> I am emailing you the pictures now
#rhrt: 02/28/09 22:35 <jboticsource1> to your rose email
#rhrt: 02/28/09 22:37 <tommost> Cool.  What are you going to construct it out of?
#rhrt: 02/28/09 22:38 <jboticsource1> the same material as our box which is 1/4 in acrylic-ish stuff
#rhrt: 02/28/09 22:38 <tommost> Ah.
#rhrt: 02/28/09 22:38 <tommost> That box is quite slick, BTW.
#rhrt: 02/28/09 22:39 <jboticsource1> ty :)
#rhrt: 02/28/09 22:39 <jboticsource1> *thank you
#rhrt: 02/28/09 22:39 <tommost> I wasn't entirely sure how to put it together, though.
#rhrt: 02/28/09 22:39 <tommost> It seems like there's at least one extra panel.
#rhrt: 02/28/09 22:39 <jboticsource1> that is the back panel
#rhrt: 02/28/09 22:40 <jboticsource1> there are 4 side panels: top, bottom, left right.
#rhrt: 02/28/09 22:40 <jboticsource1> those are all idential
#rhrt: 02/28/09 22:40 <jboticsource1> and are 15 x17
#rhrt: 02/28/09 22:40 <tommost> Yeah, plus two more.
#rhrt: 02/28/09 22:40 <jboticsource1> the back is 15 x 15
#rhrt: 02/28/09 22:40 <jboticsource1> and then there are two main sliding bits
#rhrt: 02/28/09 22:50 <jboticsource1> tommost: we could go a bit smaller and use these : http://www.solarbotics.com/products/gm22/specs/
#rhrt: 02/28/09 22:56 <jboticsource1> we could get 10 at 15 bucks a piece
#rhrt: 02/28/09 22:58 <tommost> I already have 4 Lynxmotion motors; I'd really rather not buy more.
#rhrt: 02/28/09 22:58 <jboticsource1> I was just saying in general
#rhrt: 02/28/09 23:00 <jboticsource1> they have a fully done cad of that motor already
#rhrt: 02/28/09 23:01 <jboticsource1> *drool*
#rhrt: 02/28/09 23:02 <chtr> damn you eagle and your implicit pins!
#rhrt: 02/28/09 23:09 <jboticsource1> tommost: feather feather weight sumo: http://www.solarbotics.com/products/tpm2/
#rhrt: 02/28/09 23:09 <tommost> Hehe, yeah.
#rhrt: 02/28/09 23:11 <jboticsource1> solar powered feather weight sumo?
#rhrt: 02/28/09 23:12 <tommost> Er, no.
#rhrt: 02/28/09 23:12 <tommost> The only way to hook pager motors up to wheels is to use oven timer mechanisms as gearboxes.  Those are hard to find.
#rhrt: 02/28/09 23:12 <chtr> just buzz in the right direction
#rhrt: 02/28/09 23:14 <tommost> Better plan: feather-weight combat robots.
#rhrt: 02/28/09 23:14 <kleinjt> if y'all are doing combat robotics, I'd like to do a feather-weight high voltage shocker robot
#rhrt: 02/28/09 23:15 <tommost> ...
#rhrt: 02/28/09 23:15 <jboticsource1> that are powered by bio-diesel generators
#rhrt: 02/28/09 23:15 <kleinjt> either that or compressed C02 air blasts, I haven;t decided
#rhrt: 02/28/09 23:15 <tommost> Butane.
#rhrt: 02/28/09 23:15 <jboticsource1> now that have afterburners/rockets
#rhrt: 02/28/09 23:15 <jboticsource1> !
#rhrt: 02/28/09 23:18 <tommost> http://www.solarbotics.com/products/gm10/
#rhrt: 02/28/09 23:19 <jboticsource1> a wopping 3.6 oz-in !