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 [DPRG] DPRG Micro robots Message index sorted by: [ date ] [ thread ] [ subject ] [ author ] Previous message: [DPRG] Sumo competion requirements (was DPRG Micro robots) Next message: [DPRG] HP QEDS 7099 Optical Rotary Encoder Subject: [DPRG] DPRG Micro robots From: David Peterson robodave1 at attbi.com Date: Fri Nov 1 02:09:02 CST 2002 ```Hi Earl Pico is really smaller than nano. Going smallest to bigger, Femto refers to a multiplier of 10^-15, Pico is 10^-12, Nano is 10^-9, Micro is 10^-6. Don't ya just love those metric prefixes? So I guess mini is supposed to be a parallel to Milli, 10^-3, maybe. Wouldn't one class technically be 10 or 1000 times smaller than the last, rather than halves? Oh well. About micro-sumo weights, all I've read adhered to is the 100 g value, at the NWRST, PARTs, and RoboMaxx where they've actually competed. If you look at the different weights of the classes it sort of makes sense. A full size is 20 cm by 20 cm and weighs 3000 grams, coming out to 7.5 grams per square centimeter. A minisumo is 500 grams and is 10 cm by 10 cm, coming out to 5 grams per cm ^2. A micro at 5 cm by 5 cm for an area of 25 square should point to 100 grams (actually less) giving it 4 grams per square cm, sort of a close continuation. At 200 grams it would become 8 grams per square cm, even more grams per square centimeter than Full size allows. If you assumed similar height restriction to full sized and minisumo classes, and used a volumetric measure, then full would be 0.375 grams per cubic cm, mini would be 0.5 g/cm^3, micro would be 0.8 g/cm^3 at 100 grams. At 200 grams it becomes 1.6 grams per cubic centimeter, way out of the ball park. No weight limit has been shown for the Nano-sumo size, just getting one built that small is probably difficult enough. Haven't actually seen a Nano yet, but it should be pretty cute. I do remember seeing a Micro pushing an apple around at Robothon, pretty cool. Dave ----- Original Message ----- >From: "Earl Bollinger" To: Sent: Thursday, October 31, 2002 8:17 PM Subject: RE: [DPRG] DPRG Micro robots > Actually PICO is larger than NANO. > > PICO-? maybe 75cm cubed (a little under 3inches). 300 grams. > Would make for a nice mini-can-can size robot for table top robotics. > > NANOSUMO is 2.5cm X 2.5cm X 2.5cm no weight limit. At this size why bother > with weight. > > Femto-Sumo? > There is a 1 cubic centimeter class for mouse mazes. The only robots I know > for this were made in Italy to compete in Japan where they had a number of > them in this size. > > I thought Micro-sumo had a 200g weight limit. > > -----Original Message----- > From: dprglist-admin at dprg.org [mailto:dprglist-admin at dprg.org]On Behalf > Of Bob Jordan > Sent: Thursday, October 31, 2002 1:57 PM > To: 'David Peterson'; dprglist at dprg.org > Subject: RE: [DPRG] DPRG Micro robots > > > David, > > Hello! > > What are the standards for the sumo robots? > Size, weight, arena size, etc. > > 1. SUMO - size is 20 cm X 20 cm and no height limit, 1000 grams, > 2. MINI SUMO - size is 10 cm X 10 cm no height limit, 500 grams, +/-30" > arena > 3. MICROSUMO - size at 5 cm x 5 cm x 5 cm and 100 grams > 4. NANOSUMO - > 5. PICOSUMO - > > Do you have a URL that states this clearly? Perhaps, we could > get a link to it on the DPRG site. > > Thanks > Bob Jordan > > -----Original Message----- > From: David Peterson [SMTP:robodave1 at attbi.com] > Sent: Thursday, October 31, 2002 12:31 PM > To: Steve Davee; dprglist at dprg.org > Subject: Re: [DPRG] DPRG Micro robots > > Hey Steve, > Saw this passed by and hoped to answer you. Experiments with microbots > have been a little limited here. Earl has been working on some tiny surface > mount PCBs of various types and has some interesting little Smoovy motors > for nanosumo I believe, and some other interesting stuff for micro, possibly > even a robot close to microsumo size. He could better answer his own part as > to how far he's gotten, Earl had some interesting little robots at our > recent Tabletop Competition and Barbeque at a members home. See the DPRG > competitions link to see some pictures from the contest, though some are > difficult to scale. > As for myself, I've got some decent sized motors and batteries for a > minisumo and a microsumo, possibly a micormouse as well. My possible > microsumo motors are the floppy eject mechanism motors, possibly to modify > in some manner, but not torn into yet. I look at the Microsumo size at 5 cm > x 5 cm x 5 cm and 100 grams, as just maybe possible, nano-size getting > pretty scarily small. I do have some pager motors to attempt a possible nano > though, just the 2.5 cm by 2.5 cm by 2.5 cm size seems somewhat difficult. > Earl has explored further than I, so about pictures, there aren't really > many since the bots are pretty much still in development. It's been pretty > cool to read about the micros at RoboMaxx, keep hoping to see more pics of > the event and the bots competeing there. > > Dave > > ----- Original Message ----- > From: "Steve Davee" > To: > Sent: Tuesday, October 29, 2002 1:43 PM > Subject: [DPRG] DPRG Micro robots > > > > Howdy All, > > Greetings from the PARTS part of the word. > > I am curious if pictures of the small robots being > > developed by DPRG club members are posted somewhere. > > I've read hints of what Dave and Earl have been > > working on, but I would love to hear more details and > > see some pictures. Interest in smaller robots is > > gathering up here in Oregon, we actually had 5 > > micro-sumo entrants in SORC's RoboMaxx comp. I know > > we'd all be interested in seeing what DPRG has been up > > to. > > Thanks! > > Steve > > ----------------------------------------------------- > > Build *smaller* robots! > > > > > _______________________________________________ > DPRGlist mailing list > DPRGlist at dprg.org > http://nimon.ncc.com/mailman/listinfo/dprglist > > _______________________________________________ > DPRGlist mailing list > DPRGlist at dprg.org > http://nimon.ncc.com/mailman/listinfo/dprglist > > > _______________________________________________ > DPRGlist mailing list > DPRGlist at dprg.org > http://nimon.ncc.com/mailman/listinfo/dprglist ``` Previous message: [DPRG] Sumo competion requirements (was DPRG Micro robots) Next message: [DPRG] HP QEDS 7099 Optical Rotary Encoder Message index sorted by: [ date ] [ thread ] [ subject ] [ author ] More information about the DPRG mailing list