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[00:24:26] <z64555> hm, wonder where I can get a cheap source of styrofoam slab
[00:24:41] <z64555> perhaps an ice chest
[00:28:38] <z64555> could go to the hobby store, they use it for like. bug projects
[00:28:52] <z64555> hobby store tends to be expensive tho
[00:30:38] <rue_shop3> ok I'm gonna fix up my z motors next
[00:31:12] <orlock> i have to do that too
[00:31:17] <orlock> just need to print brackets
[00:31:25] <orlock> i got a pair of steppers with integrated leadscrews
[00:35:45] <rue_shop3> I just use the lathe to make the rod into a clamp that fits the motor
[00:36:02] <rue_shop3> drill cut split, lock two nuts, pinches rod onto motor
[00:39:53] <z64555> hm. think I need to re-do my power rings
[00:44:00] <z64555> forgot to make a pickoff point for the battery. Tried to use the same point as one of the servors but that proved to be too difficult
[00:56:29] * z64555 sighs as he snips off a longer length of wire
[01:19:53] <z64555> and maybe a pair of duck bills, too
[01:29:52] * z64555 frowns at his diagonal cutters
[14:18:23] <anonnumberanon> blib, you'll need two of these:
http://www.buddyrc.com/glacier-45c-4000mah-4s-14-8v-lipo-battery.html
[14:20:03] <anonnumberanon> blib, oh im looking at your 10Ah link.
[14:23:41] <anonnumberanon> You have to make some kind of cost vs time analysis cause Hobbyking orders arrive in about 5-6 weeks.
[14:24:45] <anonnumberanon> blib, what's the application for this battery project?
[14:29:25] <SpeedEvil> Here they take about 4 days if I order locally
[14:29:31] <SpeedEvil> from the UK warehouse
[16:12:54] <fckfreenode> anyone here?
[16:20:14] <veverak> nope
[16:23:29] <blib> SpeedEvil: Hobbyking delivers in 4 days?
[16:25:11] <SpeedEvil> blib: here, about, at least for what I've ordered
[16:28:14] <z64555> picked up some jam nuts today. they do what they say on the tin
[16:28:41] <fckfreenode> guys would you recommend this drone?
http://store.hackaday.com/products/crazyflie-2
[16:28:54] <fckfreenode> basically looking for a drone that i can program mid flight, and also code pre-flight maneuvers and possibly send RT commands to the drone from my laptop
[16:37:31] <fckfreenode> anyone?
[16:39:05] <z64555> program mid flight? how so?
[16:39:14] <z64555> like programming waypoints, manuevers?
[16:40:02] <fckfreenode> z64555: hmm ok maybe not program mid flight (although it would be cool to make patches while the drone is still airborn), but at least send commands mid flight
[16:40:35] <fckfreenode> e.g. you type some maneuver into the drone's command line and the drone performs that maneuver
[16:41:40] <fckfreenode> the system is open source btw, so i don't think should be any theoretical restrictions
[16:43:20] <z64555> most commercial drones I know of are piloted by R/C transmitter. I haven't come across any yet that allow digital control by computers
[16:43:44] <z64555> Arducopter has had waypoint systems, etc. however
[16:47:23] <fckfreenode> z64555: hmm what does "real time parameter setting" mean?
[16:47:55] <fckfreenode> does that mean real time commands?
[16:50:08] <z64555> my guess it means online tuning of the PID stabelizer controller
[16:50:27] <z64555> which is. uh. a little dangerous tbj
[16:51:07] <fckfreenode> z64555: it's a pretty small drone, so very unlikely to hurt anyone even if landing on their head
[16:51:32] <z64555> always a plus
[16:52:00] <z64555> I dunno about that PCB chassis though. it looks like one break and it's dead
[16:52:49] <z64555> still, $200 is very competive for a quadrotor drone like that
[16:54:14] <z64555> (tbj? that should be tbh)
[16:54:34] <fckfreenode> z64555: the price seems kind of crazy tbh, considering its size. I'm not really familiar with drones, but surely something so small and using relatively (it seems) basic components would't be so expensive
[16:55:06] <fckfreenode> but like i said, i'm not really familiar with the drone scene
[17:01:20] <z64555> this is RC electronics you're talking here. there's also a number of custom parts and of course custom software
[17:02:33] <z64555> As a reference, a "cheap" quadrotor drone starts at $1,000
[17:02:43] <z64555> at the 1Kg weight
[17:08:28] <SpeedEvil> z64555: Err - well - no
[17:08:56] <SpeedEvil> I have bought the parts for a ~8kg max liftoff weight drone for more like $300
[17:09:07] <SpeedEvil> For commercial, that's a bit different
[17:13:09] <z64555> hm, I'm using figures from 5 years ago, sorry
[17:13:23] <z64555> Price has gone down in some areas, but it's still relatively pricey
[17:21:21] <SpeedEvil> http://www.hobbyking.com/hobbyking/store/__67038__Quanum_MT_Series_5008_335KV_Brushless_Multirotor_Motor_Built_by_DYS.html * 4, $100 ESCs and flight controllers, $100 structure, $100 battery, and you've got something that can do more like 10kg weight than 1kg
[17:21:42] <SpeedEvil> Prices have indeed come down quite a lot
[21:39:27] <rue_house> I got around 200 bricks today
[21:39:36] <rue_house> I'm gonna break the springs on my truck some day
[21:59:31] <codepython777> rue_house: if you want to get a spring of certain length and spec , how do you find it online to buy?
[21:59:46] <rue_house> how amny?
[22:02:34] <mrdata_> minimum order = how many?
[22:14:18] <codepython777> 5
[22:19:07] <codepython777> mrdata_: rue_house: why does it matter?
[22:20:15] <rue_house> cause if you want 1000 there is a company in china that make them to suit
[22:20:21] <rue_house> they might make 5
[22:20:28] <rue_house> difference is programming time
[22:20:42] <rue_house> its just a cnc wire machine
[22:21:19] <mrdata_> for quantity 5, the set up cost dominates
[22:21:38] <mrdata_> unless this is a standard spec
[22:26:49] <z64555> codepython777: sooo, what's wrong with going something off the shelf?
[22:27:19] <z64555> you can trim a spring to size, ya know
[22:28:13] <codepython777> z64555: where do i buy one with certain weight characteristic?
[22:28:49] <z64555> ...I don't follow.
[22:29:48] <z64555> like the density of the spring itself, or the spring constant?
[22:30:03] <z64555> density/weight
[22:31:48] <codepython777> spring constant
[22:33:08] <codepython777> I need spring constant and length specs. I guess I could cut the length
[22:33:15] <z64555> I think most serious retailers of springs sell them with various spring constants
[22:33:52] <z64555> you can lower a spring's constant a bit by over-stretching it, but that is not a precise method
[22:34:57] <z64555> here's an example, this one has 1.9lb/in
https://www.fastenal.com/products/details/0166698;jsessionid=F8D3F3A05110CE1B7AA53D9849A1B5AB.fcomjvm04?r=~|categoryl1:%22600206%20Hardware%22|~%20~|categoryl2:%22608834%20Spring%20Products%22|~
[22:35:39] <codepython777> nice! Thanks z64555
[22:35:58] <z64555> welcome, best of luck :)
[22:36:20] <codepython777> z64555: what are you working on?
[22:36:50] <z64555> quadrotor, building most of everything by myself. software included
[22:37:15] <rue_house> have a 3d printed blade?
[22:37:31] <codepython777> z64555: which battery?
[22:37:41] <codepython777> rue_house: 3d printed blade works?
[22:38:01] <rue_house> for the copter?
[22:38:07] <codepython777> yes
[22:38:10] <rue_house> need a good blade for my kitchen fan
[22:38:12] <z64555> 3d printed blade? no, trying to use as much shelf products possible, since I don't have access to any fancy machinery
[22:38:23] <codepython777> z64555: good choice :)
[22:38:32] <z64555> **especially** blades
[22:38:48] <codepython777> z64555: which lipo batteries?
[22:38:58] <z64555> re: battery, current one is a 3S 11.1V 2200mAh lipo
[22:39:11] <codepython777> company?
[22:39:22] <z64555> it's a 30C E-flite
[22:39:58] <z64555> I'm not expecting a long flight time with a craft weight of about 1Kg (battery included)
[22:40:09] <z64555> but it was a good buy at the time
[22:40:20] <codepython777> z64555: I'm looking for a good lipo vendor
[22:40:35] <rue_house> apple!
[22:40:54] <z64555> rue_house: I'd suggest making the fan blade out of plywood
[22:41:01] <codepython777> rue_house: lipo?
[22:41:05] <z64555> unless you have one of those fancy types
[22:42:20] <z64555> codepython777: I haven't had any trouble with battery yet, I did have a pair go bad on me (got puffy) years ago from a different vender
[22:42:25] <z64555> sadly I forget the name
[22:42:57] <codepython777> z64555: I've puffed up most lipo companies :)
[22:43:08] <z64555> be sure to get a quality charger and balancing circuit
[22:44:21] <codepython777> z64555: after usage, they all seem to have problems
[22:45:04] <z64555> hm, sounds like you may be pulling too much current for its rating, or otherwise getting them too hot
[22:45:30] <codepython777> z64555: yes, at times. Some go bad anyways
[22:50:13] <z64555> you've been keeping them at 33% cap for storage, right?
[22:50:21] <codepython777> z64555: yes
[22:50:29] <z64555> good
[22:50:33] <codepython777> i charge them to 100% at times though
[22:50:35] <codepython777> do you too?
[22:50:45] <z64555> only when I'm about to use em