#robotics Logs

Jan 04 2015

03:40 delinquentme_ how would I translate a linear motion where each increment of that linear motion yields equidistant radial degrees ?
03:43 ace4016 ?
03:50 deshipu a wheel
03:52 Jak_o_Shadows with a fancy linkage
03:54 Veverak do you know the feeling
03:54 Veverak that you actual designs are few parts flying in the space
03:54 Veverak and you just have to find a way how to connect them together?
03:56 Veverak nah, not to mention that it would be nice if inners of taht robot would be waterproof
04:14 orlock CrazyEddy who used to lurk on oz.org?
04:14 orlock if you _dont_ answer, i'm assuming yes.
04:18 rue_bed its easy once you have all the parts hovering in free space
11:48 deshipu http://www-arailab.sys.es.osaka-u.ac.jp/index.php?option=com_content&view=article&id=78&Itemid=111&lang=en
11:48 deshipu a cool japanese hexapod :)
16:53 Mister is there any reason one wouldn't use a hub motor for a gyrostabilized vehicle?
16:53 Mister such is this: http://www.ebay.com/itm/cheap-8-8inch-brushless-gearless-hub-motor-for-electric-scooter-/161541051748?pt=LH_DefaultDomain_0&hash=item259c98d564
17:09 Hyratel maybe i'm not understanding, but can someone ForDummies some sample code to get a BOOL for pinstate out of this? http://www.cypress.com/?docID=49248
19:22 rue_shop4 theBear, what time is it?
19:22 rue_shop4 theBear, what time is it?
19:22 rue_shop4 theBear, what time is it?
19:22 rue_shop4 theBear, what time is it?
19:22 rue_shop4 theBear, what time is it?
19:22 rue_shop4 theBear, what time is it?
19:27 Mister anyone know if hub motors are damaged if you change direction while it's running?
19:28 Mister it should work for atleast a while?
19:28 Mister for self-balancing vehicles
19:28 Mister motors inside a wheel
19:32 Tom_itx if you are balancing, it's not gonna be going from full fwd to full rev anyway
19:32 Tom_itx it should be fine
19:34 deshipu rue: congrats on mention on hackaday :)
19:34 Mister hmm k cool
19:34 Mister it shouldn't matter wheter it is a 2 or 3 phase motor?
19:48 Hyratel Mister, wheere do you get a 2 phase motor
19:49 Mister uhm, not sure really lol
19:50 Mister just thought there existed 2phase hub motors?
19:52 Hyratel DC brushless are all 3 phase
19:52 Hyratel a 2 phase can't reverse
19:53 Hyratel and can't be direction selected at startup, they need external impulse
19:53 Hyratel actually scratch that
19:53 Hyratel they can't be electronically reversed
19:54 Mister just need to switch polarity, right?
19:54 Hyratel *face scrunch*
19:54 Hyratel IDK, I've got smaller stuff on the brain right no
19:54 Hyratel but you're only going to see 3 phase
19:55 Mister hmm k, that only counts for hub motors used in bisycles?
19:55 Hyratel all hobby brushless are 3 phase
19:56 Mister i meen a motor like this: http://www.ebay.com/itm/cheap-8-8inch-brushless-gearless-hub-motor-for-electric-scooter-/161541051748?pt=LH_DefaultDomain_0&hash=item259c98d564
19:57 Hyratel that's 3 phase
19:58 Hyratel see the heavy wires are blue, yellow, green
19:58 Mister u tihnk it'll break fast? if we change direction while running
19:58 Hyratel also don't buy from Sketchy Ebay
19:58 Mister it has gears inside
19:59 Hyratel no that's a brushless hubmotor
19:59 Hyratel hubmotor means no gears
19:59 Mister just looking up general prices on some hardware x-D
19:59 Mister and their names lol
19:59 Hyratel don't lol me
19:59 Mister hmm
20:00 Mister what defines a hub motor?
20:00 Hyratel direct drive,
20:00 Mister i tihnk crystallyte has atelast one version with lots of gears inside
20:00 Mister aha
20:00 Hyratel other than that, exactly what it sounds like
20:01 Hyratel if it does, then it's probably a planetary gearbox
20:01 Hyratel planetary gearboxes are coaxial from the motor input to the shaft output
20:02 Hyratel https://www.electricbike.com/hubmotors/
20:02 Hyratel start reading
20:03 Hyratel less torque, heavier than other types
20:03 Mister yeh i was thinking of that image at the top of the link
20:04 Mister hmm, would that be better worse then an ordinary hub?
20:04 Mister i guess better now that i had a look at it lol
20:04 Hyratel don't lol me
20:04 Mister but i thought it would break faster wich is why i asked about it =)
20:07 Mister political correctitude is for politicians, and not for me..
20:08 Hyratel it's empty noise
20:08 Hyratel also it's not punctuation.
20:20 Mister Hyratel: thanx for the info btw.. =)
20:21 Hyratel no problem
20:22 Mister if you wanted to see what you where helping with you can look at http://www.tundra-telebotics.com/
20:22 Mister it's just an old concept scetch however
20:23 Hyratel oooh
20:23 Hyratel got a neat thing going there
20:23 Hyratel glad to have helped
20:24 Hyratel http://www.cypress.com/?rID=92146
20:24 Mister Much appreciated!
20:24 Hyratel if you have $4 to spare, treat yourself to a stocking stuffer (get the 42xx)
20:26 Mister can it control 42 pins and only cost 4 dollars?
20:27 Hyratel it's got a lot of CPLD fabric
20:28 Mister hmm that is very interesting
20:29 Mister i have an arduino uno, would this be able to do the same?
20:29 Hyratel more
20:30 Hyratel imagine an arduino 324 clocked at 48MHz PLUS pluripotent FPGA/CPLD fabric
20:30 Hyratel I've got a 12MHz PWM
20:30 orlock Hyratel: the guy i sold my DSO to gave me a little FPGA board he made
20:30 orlock sounds kinda like that
20:31 orlock http://www.fleasystems.com/fleaFPGA.html
20:31 Hyratel IDK how much Fabric the PSOC4 has though
20:32 Mister what is fabric?
20:32 Mister not too familiar with all these terms and names x-D
20:33 Hyratel "fabric" refers to the reconfigurable gate structure
20:35 Hyratel http://www.cypress.com/?mpn=CY8C4245AXI-483
20:35 Hyratel orlock,
20:38 Mister hmm yeah i think i need one of those x-D
20:38 Mister is it formed as a usb stick?
20:38 Hyratel yes
20:38 Hyratel it's got a snapoff USB-UART module chip
20:39 Mister hmm that is very small
20:39 Mister how long can those connections wires be for that thing you snap off?
20:39 Hyratel IDK. it's UART
20:40 Hyratel but you're better off extending USB
20:47 Mister hehe true xD it was kinda small and fits anywhere
20:47 Mister do you have yo solder the pins yourself?
20:47 Mister you*
20:48 Hyratel yes, it comes without pins
20:53 Mister u know a cheap GSM and GPS card too?
20:55 Hyratel check sparkfun
20:55 Mister cool
20:55 Mister hmm i got an idea x-D
20:55 Mister do you think these would work for wireless transmitting of programs from pc to that card?
20:55 Mister http://www.amazon.com/Cables-Unlimited-USB-WIRELESS-Dongle-Black/dp/B001GV00ZM/ref=pd_sim_sbs_e_3?ie=UTF8&refRID=1X8TFF4T2J242S8Z0S7W
21:02 Mister or this: http://www.md-sulhan.com/blogimages/wireless02.jpg
21:04 Hyratel get that ESP unit
21:04 Hyratel http://www.seeedstudio.com/depot/WiFi-Serial-Transceiver-Module-w-ESP8266-p-1994.html
21:04 Hyratel make it a UART
21:05 Mister aha very interesting!
21:14 orlock the ESP's are buggy, or were
21:14 orlock they may be better now
21:14 orlock used to crash after data xmit
21:16 Mister on seeedstudio?
21:16 Mister just found something very cool x-D
21:16 Mister http://www.seeedstudio.com/depot/RPLIDAR-360-degree-Laser-Scanner-Development-Kit-p-1823.html
21:16 Mister World Domination!!