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[00:42:26] <Triffid_Hunter> Jak_o_Shadows: universal motor would be ok, those are in lots of AC-powered goods
[00:42:56] <Jak_o_Shadows> Don't you need reasonably high voltage for those?
[00:43:07] <Triffid_Hunter> RustyShackleford: thing is, you want a motor that spins about the same speed as someone winding a hand crank, ~90rpm or so.. that definitely is geared down, electric motors typically don't like spinning that slow
[00:43:37] <RustyShackleford> maybe I'll stop being such a lazy bastard and crank it myself
[00:43:44] <Jak_o_Shadows> Like, 40+ volts?
[00:43:47] <Triffid_Hunter> Jak_o_Shadows: well voltage is irrelevant to the type of motor, however most universal motors in household goods are designed for 120v or 240v
[00:43:48] <RustyShackleford> or just buy one with a motor already lol
[00:43:57] <Jak_o_Shadows> Mmm, yeah.
[00:44:31] <orlock> Cordless drill with failed batteries
[00:50:10] <RustyShackleford> I do have a cordless drill
[00:50:23] <RustyShackleford> I could also just depress the trigger slightly
[00:53:58] <Jak_o_Shadows> heck, to be honest, you could just use a normal drill
[00:56:15] <RustyShackleford> if I can use a normal drill, whats stopping me from using some random electric motor
[00:56:24] <Triffid_Hunter> RustyShackleford: drills have gearbox inside already
[00:56:35] <Triffid_Hunter> RustyShackleford: feel free to gut a drill for a semi-permanent fixture
[00:56:59] <orlock> I have at least two spare cordle4ss drills with no battery pack
[00:57:09] <orlock> thats not including the pair i gutted
[00:57:11] <Triffid_Hunter> RustyShackleford: all the drills I've used have two stage planetary with a motorbike-style switch on the second stage
[00:57:37] <orlock> Triffid_Hunter: to change direction?
[00:57:55] <orlock> mine just reverse the polarity
[00:58:04] <Triffid_Hunter> orlock: no to choose the reduction ratio
[00:58:08] <RustyShackleford> now I want to gut a drill to see how that works
[00:58:12] <orlock> but then you end up with a slow reverse as the motor's brushed and timed for forwards
[00:58:13] <orlock> ahh
[00:58:16] <Triffid_Hunter> orlock: direction change is a separate, electrical switch near the trigger
[00:58:29] <orlock> yeah, fancy drills then
[00:58:29] <RustyShackleford> bet I can find an AC drill for really cheap
[00:58:35] <orlock> i use $20 XU1's from bunnings
[00:58:36] <RustyShackleford> any reason it should be battery powered?
[00:58:50] <orlock> RustyShackleford: bcause batterys fuck up
[00:58:59] <orlock> and the drills get turfed
[00:59:04] <RustyShackleford> I'm going to be plugging it into 120v AC anyway
[00:59:15] <RustyShackleford> oh I see. Easy to find them cheap
[00:59:18] <Triffid_Hunter> RustyShackleford: low voltage stuff is safer for you to wire up
[00:59:46] <Jak_o_Shadows> yeah, when I suggested a normal drill, I would suggest just linking it mechanically.
[00:59:51] <Jak_o_Shadows> Then using the normal drill trigger
[01:00:58] <Triffid_Hunter> RustyShackleford:
http://forums.autodesk.com/autodesk/attachments/autodesk/78/316168/1/sun%20and%20planets.gif planetary gearbox
[01:01:09] <RustyShackleford> permanent fixture would be cooler but yeah that would do just fine
[01:01:21] <Triffid_Hunter> RustyShackleford: in a drill, the motor drives the sun, the annulus is held in place and the output comes from the planets
[01:02:09] <RustyShackleford> I wish I studied ME instead of CS and math hah. Cool design but I don't see how it accomplishes anything
[01:02:42] <RustyShackleford> the outermost gear is the output?
[01:02:55] <Triffid_Hunter> RustyShackleford: no, the annulus is held in place and the output comes from the planets
[01:04:35] <Triffid_Hunter> RustyShackleford: they're often two stage, with the speed switch holding or releasing the second stage annulus and locking the suns together
[01:10:51] <Jak_o_Shadows> they increase torque/decrease speed a lot quite compactly
[01:14:41] <z64555> hm, picked up some eye hooks. need to make a 2-tine fork out of wood
[01:14:58] <z64555> and hopefully the 4x4 wood post I used as the test pedistal is still here
[01:15:09] <z64555> I can attach the fork to it and get rolling
[01:17:28] <orlock> z64555: What's this for?
[01:18:10] <z64555> quadrotor
[01:34:05] <RustyShackleford> lets say I find a drill I can gun to make a permanent fixture
[01:34:23] <RustyShackleford> how hard is it to conver 120AC to 18VDC (or 12V maybe depending on the drill)
[01:39:59] <Snert> it's very easy. Just takes $.
[01:40:12] <Snert> less than 20bucks I'd think.
[01:40:52] <orlock> Plenty of ways
[01:41:04] <Snert> http://www.ebay.com/itm/HP-Hewlett-Packard-0950-3807-AC-DC-Power-Adapter-100-240vac-in-18VDC-2-23A-out-/272287009694?hash=item3f65920b9e:g:UtgAAOSwgyxWUMwz
[01:41:07] <Snert> 6bucks.
[01:41:08] <orlock> Getting the required current is the hard bit
[01:41:59] <orlock> You could do with less voltage and more current
[01:51:54] <z64555> "I find a drill I can gun" err...
[02:36:13] <Snert> not sure what dat means.
[02:36:45] <Snert> show up in an airport weilding a drill and somebody is going to think it's a different piece of machinery.
[02:38:49] <Snert> do you have a permit to carry that concealed drill?
[02:38:56] <orlock> Now we are all on a list!
[02:38:59] <Snert> lol
[02:39:12] <orlock> Actually, they wont let you on with any tools pretty much
[02:39:29] <orlock> so you dont try to deconstruct the aircraft from the inside
[02:44:56] <z64555> or make a hole in someone's head, more likely
[05:01:00] <Triffid_Hunter> RustyShackleford: trivial, laptop power supply
[06:53:50] <ToAruShiroiNeko> so I am trying to draw my design in autocad, is there any guides you would reccomend for a quickie?
[06:54:32] <ToAruShiroiNeko> I want to draw 8 wheels, 4 in each side symetrically
[06:54:45] <Tom_itx> yeah, use solidworks
[06:54:48] <Jak_o_Shadows> Don't use autocad?
[06:54:52] <ToAruShiroiNeko> okay
[06:55:37] <ToAruShiroiNeko> this isnt free either :/
[06:55:47] <ToAruShiroiNeko> let me see if there is a trial verison
[06:59:35] <Tom_itx> fusion 360 is
[06:59:47] <Tom_itx> never tried it but hear good things
[07:01:21] <ToAruShiroiNeko> cant seemt oc reate a solidwork account
[07:07:00] <Jak_o_Shadows> I prefer inventor, but meh.
[07:07:04] <Jak_o_Shadows> Autodesk Inventor that is
[07:07:21] <Jak_o_Shadows> PTC Creo is good in assembly mode, godaweful in sketching
[07:08:01] <florb> bonjour
[07:20:55] <ToAruShiroiNeko> I am plainly confused
[07:21:04] <ToAruShiroiNeko> I want to do something relatively basic and I am a newbie
[07:21:18] <ToAruShiroiNeko> I would prefer a not too complicated tool that lets me draw symetrically
[07:21:27] <deshipu> OpenSCAD :)
[07:21:36] <deshipu> I really like it
[07:21:48] <deshipu> you write code that draws the things
[07:23:02] <ToAruShiroiNeko> I used it before
[07:23:06] <ToAruShiroiNeko> yeah
[07:23:44] <ToAruShiroiNeko> I use it to design 3d objects for my 3d printer so it is helpful 2fold
[07:25:33] <Jak_o_Shadows> So not a fan of openSCAD
[07:25:40] <Jak_o_Shadows> Too low level
[07:35:15] <deshipu> I like it becauase it really plays nicely with source control
[07:36:35] <ToAruShiroiNeko> I hate fighting the UI just to make sure things are properly alligned
[07:36:45] <ToAruShiroiNeko> openSCAD allows me to circumvent that
[09:21:55] <rue_house> Jak_o_Shadows1, openscad isn't much use for organic shapes, even thread can be quite a challange, its too bad they didn't reuse the povray langauge
[09:22:18] <rue_house> and bring back the povray modeler
[09:22:30] <deshipu> then again, you don't want much organic chapes
[09:22:54] <deshipu> rue_house: you can use povray, it's not like it disappeared
[09:23:00] <rue_house> yea, sometimes I want a completely 'random' shaped surface
[09:23:15] <rue_house> for printing tho
[09:23:16] <deshipu> blender is good for organic shapes
[09:23:31] <rue_house> openscad is so close to povray, but lacks a lot of important things
[09:24:31] <deshipu> I think the similarities are only superficial
[09:24:53] <deshipu> they are for doing different things, and the openscad language reflects that
[09:24:54] <rue_house> my stance is that povray was better
[09:25:02] <deshipu> better for what
[09:25:02] <rue_house> as a csg modeling language
[09:25:55] <deshipu> I used povray briefly at the uni, but can't really remember much from it, all that is left is a vague impression of it being a major pain
[09:26:20] <deshipu> but lots of things were back then
[09:26:23] <rue_house> sounds like you didn't useit much
[09:26:59] <deshipu> sure, you can get accustomed to anything
[09:27:02] <rue_house> I used it for a few years
[09:27:07] <deshipu> and then anything different seems worse
[09:33:16] <rue_house> how about blobs?
[09:33:22] <rue_house> how about a modeler?
[09:33:31] <rue_house> how about height maps?
[09:33:54] <rue_house> povray was a better language
[09:34:04] <ToAruShiroiNeko> a question
[09:34:17] <ToAruShiroiNeko> is there a mechanic mean to level a plane?
[09:34:18] <rue_house> a postulation
[09:34:51] <rue_house> I think they use heavy equipment and just squish them
[09:35:58] <rue_house> ToAruShiroiNeko, ^
[09:36:23] <ToAruShiroiNeko> no not like that
[09:36:32] <ToAruShiroiNeko> I am considering a Rocker-bogie suspension
[09:36:45] <ToAruShiroiNeko> all the load would at the end of the suspension apply to a single focal point
[09:37:08] <ToAruShiroiNeko> the load I want to put there would need to be rebalanced
[09:37:31] <Jak_o_Shadows1> Yeah.
[09:37:39] <Jak_o_Shadows1> A lot of the 3d printer people seem to be reinventing EVERYTHING
[09:40:10] <rue_house> ToAruShiroiNeko, ok, what are you looking for
[09:40:22] <Tom_itx> playin hookey today?
[09:40:24] <ToAruShiroiNeko> umm
[09:40:36] <rue_house> no, I dont leave till .. 7:15 or so
[09:40:44] <Tom_itx> guess what?
[09:40:56] <Tom_itx> you got about 40 sec
[09:41:08] <rue_house> yea...
[09:41:22] <rue_house> there are shreddies left and I'm not dressed yet
[09:41:28] <Tom_itx> what you workin on today?
[09:41:34] <ToAruShiroiNeko> so consider
http://www.wireless-earth.org/private/common_images/RockerBogieSuspension.jpg
[09:41:42] * Tom_itx hides rue_house's left boot
[09:42:17] <ToAruShiroiNeko> the cyan load is attached to the suspension at two points
[09:42:17] <rue_house> I have to go to the town past the town past the town and hook up telelphones that were causing problems so we disconnected them
[09:42:17] <ToAruShiroiNeko> that requires the cyan box to be balanced for this to work
[09:42:17] <ToAruShiroiNeko> right?
[09:42:39] <rue_house> you have to keep its orientation perfect?
[09:42:47] <Tom_itx> just tell em to go wireless
[09:42:53] <rue_house> its a cup of coffee traveling over a grassy knoll?
[09:42:56] <ToAruShiroiNeko> not perfect but it will need to be somewhat levelled
[09:43:01] <ToAruShiroiNeko> so that it doesnt tip
[09:43:21] <rue_house> its to a house thats a block away via a burried wire that has some failing wires
[09:43:23] <ToAruShiroiNeko> the suspension will be somehting like 40-60cm wide and 60cm + suspension high
[09:43:36] <rue_house> I suggest using gravity to level it
[09:43:38] <Tom_itx> i've seen that arrangement before
[09:43:41] <ToAruShiroiNeko> so center of mass will likely be unbalanced
[09:43:44] <Tom_itx> aka mars lander thingie
[09:43:47] <rue_house> ToAruShiroiNeko, know what a gimbal is?
[09:44:24] <rue_house> ToAruShiroiNeko, then lower it
[09:44:28] <ToAruShiroiNeko> I didn,t but now I do :D
[09:44:39] <rue_house> or make an inverted pendulum
[09:44:43] <Tom_itx> http://d2n4wb9orp1vta.cloudfront.net/resources/images/cdn/cms/0709_MMS_missiontom_D.jpg
[09:44:55] <ToAruShiroiNeko> rue_bed an inverted pendulum?
[09:45:09] <rue_house> google...
[09:45:28] <Tom_itx> https://www.youtube.com/watch?v=B48csKMTp5E
[09:45:52] <ToAruShiroiNeko> \I have
[09:45:59] <ToAruShiroiNeko> you have to be a bit more specific
[09:46:09] <ToAruShiroiNeko> you suggest have electronics to rebalance?
[09:46:22] <ToAruShiroiNeko> I was hoping for purely mechanical
[09:46:36] <rue_house> https://www.youtube.com/watch?v=a4c7AwHFkT8
[09:46:50] <Tom_itx> https://www.youtube.com/watch?v=bP7p5Bd2d50
[09:50:28] <ToAruShiroiNeko> a gimbal is what I need maybe
[09:51:56] <ToAruShiroiNeko> is there an alternative I can use? because I actually have 4 wheels so center of mass can be distributed smarter
[09:52:03] <ToAruShiroiNeko> *8 wheels
[10:02:15] <ToAruShiroiNeko> rue_house something like
https://www.youtube.com/watch?v=j4OmVLc_oDw
[10:22:17] <z64555> why purely mechanical?
[10:22:43] <Snert> that looks very worthy as a project
[10:53:35] <z64555> shoot.
[10:53:43] <z64555> my 4x4 wood post is missing
[12:45:47] <ToAruShiroiNeko> z64555 because I intend to have a lot of electronics already, I want to limit the electronic complications that use battery life a bit
[12:47:09] <SpeedEvil> electronic complications can easily save battery
[12:48:21] <ToAruShiroiNeko> huh?
[12:48:27] <ToAruShiroiNeko> mechanical is purely battery free
[12:48:35] <ToAruShiroiNeko> I need it to self balance relatively resonably
[12:48:38] <ToAruShiroiNeko> not precisely
[12:49:08] <z64555> still need something to move that gearbox, however
[12:49:09] <ToAruShiroiNeko> so that if robot runs over a small obstacle it wouldnt debalance the load
[12:49:40] <SpeedEvil> Mechanical is battery free, but electrical can reduce the power required in the locomotion by various strategies
[13:06:24] <ToAruShiroiNeko> indeed but in this case the locomotion wouldnt be impacted by the mechanics I believe
[13:21:05] <z64555> wonder if I should pay a bit more and get a real tripod, or go back to Lowe's and buy a 4x4 post
[13:23:10] <ToAruShiroiNeko> when in doubt, use the smell test
[13:23:20] <ToAruShiroiNeko> thats what gta3 vice city taught me
[13:24:41] <z64555> don't think that applies here. I misplaced my testing pedistal, no idea where it went. It was a 4x4 post with some 1x4 legs
[13:35:39] <z64555> might have to go the wood route. The tripods at roughly the same cost are all lightweights
[13:36:01] <z64555> which is great if you're not using it to hold up a wind machine
[13:40:03] <z64555> but, then again
[13:40:23] <z64555> The ability to test at various controlled heights would be useful
[13:51:38] <z64555> hm. the only ones I am finding at a reasonable price are all "lightweight"
[15:23:02] <robopal> http://www.popsci.com/silicon-valley-security-guard-robot-injures-toddler
[15:41:28] <Snert_> couldn't find a price tag on that robot.
[18:21:41] <ToAruShiroiNeko> robopal do we know for sure that the todler wasnt a commerical spy?
[18:24:48] <robopal> dont know, but for sure, this robot isn't my pal
[18:25:03] <robopal> <--- XD
[18:30:32] <Snert_> and that robot looks like a rolling humpty dumpty.
[18:30:39] <Snert_> poor styling.
[18:34:43] <ToAruShiroiNeko> all robots should be armed with lasers
[18:36:36] <Snert_> All citizens should be armed with guns too.
[18:36:57] <Snert_> a permit should be required in order to not carry concealed.
[18:37:37] <Snert_> then we can take care of any wayward robot on demand.
[20:12:29] <veverak> I have
[20:12:32] <veverak> RGB led
[20:12:38] <veverak> or, strip of leds
[20:12:48] <veverak> and would like to display 0-1024 variable on it +-
[20:13:08] <veverak> been thinking, is there some nice converison from "one linear value" to "RGB color" ?
[21:25:16] <z64555> veverak: sounds like some PWM
[22:01:03] <z64555> I really do wonder what happened to my heat shrink tubing
[22:47:43] <SpeedEvil> It got hot and shrunk out of sight?
[23:23:35] <Loshki> If you keep heating it, it becomes a black hole.
