#garfield | Logs for 2016-02-24

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[00:06:10] <rue_shop3> ?
[00:06:28] <katsmeow> i foud it
[00:07:39] <rue_shop3> sweet!
[00:07:43] <rue_shop3> ..can I get a cpy?
[00:07:56] <rue_shop3> I think the gas valve is plugged on my dryer
[00:08:35] <katsmeow> a copy of the #robotics log?? with 4 rue* in hee, you do not have a copy?
[00:08:52] <rue_shop3> just the bit whwere we worked out the alphabet
[00:08:52] <katsmeow> zlog !halp
[00:09:19] <katsmeow> oh
[00:09:42] <katsmeow> if that was in robotics, i wasn't there, as i are not there now
[00:10:42] * katsmeow restarts the search to see if it was i here
[00:11:50] <rue_shop3> you were there, you pointed out betaoid, ... or something
[00:19:07] <katsmeow> i do not have that data
[00:20:01] <rue_shop3> R is for Robot
[00:20:05] <rue_shop3> your memory
[00:20:06] <rue_shop3> its in there
[00:20:09] <rue_shop3> you know it
[00:20:12] <rue_shop3> feel it
[00:20:15] <rue_shop3> amplify it
[00:20:18] <rue_shop3> focus
[00:20:33] * katsmeow holds up a mirror to rue
[00:21:46] <rue_shop3> I dont think F was for fembot
[00:22:29] <rue_shop3> I dont think I should always be this tired, I think something is wrong
[00:22:40] <rue_shop3> I cant make anyone think this enough to help test me
[00:24:16] <katsmeow> hell, rue, i cannot get human rights on my own property
[00:24:59] <rue_shop3> your prompting me for more useless suggestions
[00:25:41] <katsmeow> no
[00:25:43] <rue_shop3> it makes sense
[00:26:05] <rue_shop3> why so many people put bullet armour on buldozers and go take out the town
[00:27:31] <rue_shop3> theres an idea, steal a bulldozer, make it remote control and take down the courthouse
[00:30:01] <katsmeow> i can't help but think the cia has that logged now
[00:30:01] <rue_shop3> how did it help them on 9 11?
[00:30:03] <katsmeow> good point
[00:31:13] <rue_shop3> oh I think this machines filesystem just went read only again
[00:31:20] <rue_shop3> ANOTHER dieing hard drive
[00:32:33] <rue_shop3> gngiht
[00:33:07] <katsmeow> gnite
[18:41:31] * any92283849 looks at rue with a peeved look on her face
[18:42:22] <any92283849> everything i do to use a mosfet is making parts count skyrocket
[18:43:55] <any92283849> even taking on a mosfet over a bipolar, so that when the bipolar is driven with enough base current the mosfet biases on,,, doesn't make enough current to turn the mosfet off again
[18:45:25] <any92283849> if i make so it can get the gate below 2v, it's drawing way too much current to get 8v on it
[18:46:15] <any92283849> if i make sure it has drive and voltage swing, the feedback gets screwy and stuff lacks built-in protection
[18:46:50] <any92283849> if i make voltage swing and protected current boost it can't get below 2v on the gate
[18:58:22] <any92283849> also, if the switcher psu undervolts, there may not be enoughvoltage to pull on bipolar bases to swing the gate enough
[20:20:53] <any50874821> wondering about the state of the art when you notice the transistors for the new design have been made for 50 years now
[21:09:08] <zhanx> Evening
[21:19:31] <katsmeow-afk> yipes! it's almost 9pm!
[21:22:04] <katsmeow-afk> this month there has been 2 or 3 rotating weather systems with tornadoes, rain, sleet, and winds over 70mph, traveling south to north, but none of them has been called a hurricane
[22:10:04] <katsmeow-afk> https://www.youtube.com/results?search_query=Boston+Dynamics+Atlas
[22:15:23] <katsmeow-afk> rue, i have some R5 bearings, 2.25 inches dia, how do i make housings for them with out a lathe?
[22:27:55] <katsmeow-afk> 2.25 IS dom tubing/pipe seem rare
[22:28:10] <katsmeow-afk> 2.25 ID DOM tubing/pipe seems rare
[22:30:34] <katsmeow-afk> ......................
[23:22:27] <rue_house> I got 2 rollers "finished" for the pipe bender
[23:22:40] <rue_house> one of them is a bit ugly, I think I'll make all 4 and have one as a spare
[23:23:10] <rue_house> should grade 8 be any harder to bend then grade 3 or just to sheer?
[23:23:16] <rue_house> it should be related
[23:23:34] <katsmeow-afk> yeas, grade 8 is tougher all over
[23:23:55] <rue_house> a 15/16" grade 8 bolt vs 3" of aluminum, I dont know what gives first
[23:24:00] <rue_house> tho I suspect the aluminum
[23:24:22] <katsmeow-afk> hold the bolt at both ends
[23:24:32] <rue_house> just a sec...
[23:24:40] <katsmeow-afk> 2.25 ID DOM tubing/pipe seems rare
[23:24:42] * rue_house struggles to hold up the bolt
[23:24:43] <katsmeow-afk> rue, i have some R5 bearings, 2.25 inches dia, how do i make housings for them with out a lathe?
[23:25:02] <katsmeow-afk> hold it higher, i still can't see it
[23:25:22] * rue_house westles it up a big more... eyes buldging...
[23:25:56] <katsmeow-afk> this would be easier if we lived on a flat earth
[23:26:06] * rue_house drops the bolt
[23:26:30] * katsmeow-afk dilates tme and watches the bolt float down
[23:26:46] <katsmeow-afk> https://www.youtube.com/results?search_query=Boston+Dynamics+Atlas
[23:26:57] <rue_house> without a lathe, I dont know, my new trick was to use thick wall, munch it smaller till the Ddesired = average of wall thickness and turn it out to the right size
[23:27:09] <rue_house> maybe you can make a rotating grinder
[23:27:17] <rue_house> your amazing with grinders
[23:27:26] <rue_house> your die grinder
[23:27:32] <rue_house> you got one, didn't you?
[23:28:07] <katsmeow-afk> sorta, it's not called that, but i use it as one
[23:28:12] <rue_house> ok
[23:28:37] <katsmeow-afk> but i can't find affordable 2.25 inch ID tubing *at all*
[23:28:49] <rue_house> get thick wall thats bigger,
[23:28:54] <rue_house> cut a slot out of it
[23:28:56] <rue_house> crunch
[23:28:58] <rue_house> weld
[23:28:59] <rue_house> grind
[23:29:07] <katsmeow-afk> if i need to remove more than .010 , i'll need to automate the process
[23:29:25] <katsmeow-afk> cruching like that makes it not-round
[23:29:27] <rue_house> does the outside have to be round or is it just a holder?
[23:29:36] <katsmeow-afk> bearing holder
[23:29:48] <katsmeow-afk> with some pressure, of course
[23:29:53] <rue_house> then crunch it so the error does not exceed 50% the wall thickness
[23:30:17] <katsmeow-afk> 50% of a 3/8 wall is 1/8
[23:30:23] <katsmeow-afk> that's a lot of grinding
[23:30:24] <rue_house> and the desired size is at a point of 50% the average dia of the crunched pipe
[23:30:39] <rue_house> well, I had a lathe, adjust as required
[23:30:53] <rue_house> I wonder if its economical to ship
[23:31:02] <rue_house> packed in foam led segments
[23:31:09] <katsmeow-afk> a lathe don't ship well
[23:31:14] <rue_house> (I have 3 mroe to do and then I can paint them all for ya)
[23:31:24] <rue_house> oh, you need 300 of them dont ya?
[23:31:30] <katsmeow-afk> the steel will crush the foam permanently
[23:31:39] <katsmeow-afk> no, 3 will be fne
[23:31:42] <rue_house> oh
[23:31:53] <rue_house> how long? .75"?
[23:32:22] <katsmeow-afk> the R5 is 1/2" thick, so anything over that
[23:33:29] <katsmeow-afk> i dunno, am thinking i can mount 2 smaller bearings under the shaft, they won't turn but 1 rev in 2 secs
[23:34:19] <rue_house> sin(sqrt(1113.35755))"?
[23:34:26] <katsmeow-afk> i can bearing under them ou tneh outside of the plate frame, and one on top on the inside to keep them from pupping up
[23:35:01] <katsmeow-afk> 0.54999999901951687086887255278488
[23:35:14] <rue_house> yes? no?
[23:35:41] <katsmeow-afk> what was the question?
[23:35:48] <rue_house> is that a good size?
[23:35:54] <katsmeow-afk> yeas
[23:36:02] <rue_house> I have some sch 80 that I think can be reduced for that
[23:36:11] <rue_house> er maybe not
[23:36:21] <rue_house> might work if I insert a peice
[23:36:36] <katsmeow-afk> to hold the bearing square, it would need to be reduced in a lathe, at least one face
[23:36:41] <rue_house> oh hell, lets find out
[23:36:52] <katsmeow-afk> umm, lets not hack a bearing mount
[23:37:31] <katsmeow-afk> i don't wanna be grinding a oval hole to be +/- .002 of 2.25"
[23:38:49] <rue_house> ok
[23:38:53] <rue_house> hard, cold steel
[23:39:25] <rue_house> 53mm id
[23:39:29] <rue_house> 52mm id
[23:39:43] <rue_house> 2.047inch
[23:39:50] <katsmeow-afk> way too small
[23:40:11] <rue_house> wall thickness = 4mm
[23:40:20] <rue_house> 2mm margin
[23:40:33] <rue_house> goal 2.25"
[23:40:41] <katsmeow-afk> 57 is too small even
[23:40:45] <rue_house> 57.15mm
[23:41:12] <rue_house> target ID is 55.15mm
[23:41:16] <katsmeow-afk> 4mm won't hold tons
[23:41:28] <rue_house> current ID is 52mm
[23:41:56] <katsmeow-afk> if i wanted to limit the capacity to 800lbs, i'd use the little bearings
[23:42:08] <rue_house> zippo:/files/graphics/pictures/2016/temp# circle -d 55.15
[23:42:08] <rue_house> Radius is : 27.575001
[23:42:09] <rue_house> Diameter is: 55.150002
[23:42:09] <rue_house> Circumfrence is : 173.258835
[23:42:09] <rue_house> Area is : 2388.806396
[23:42:09] <rue_house> Sphere area: 9555.225586
[23:42:11] <rue_house> Sphere volume: 87828.445312
[23:42:13] <rue_house> You have new mail in /var/mail/root
[23:42:15] <rue_house> zippo:/files/graphics/pictures/2016/temp# circle -d 52
[23:42:17] <rue_house> Radius is : 26.000000
[23:42:19] <rue_house> Diameter is: 52.000000
[23:42:21] <rue_house> Circumfrence is : 163.362823
[23:42:25] <rue_house> Area is : 2123.716553
[23:42:27] <rue_house> Sphere area: 8494.866211
[23:42:29] <rue_house> Sphere volume: 73622.179688
[23:42:49] <rue_house> delta is 9.896mm
[23:42:53] <katsmeow-afk> i do not have mail in /var/mail/root
[23:43:05] <rue_house> oh, my bad
[23:43:11] <rue_house> anyhow
[23:43:37] <rue_house> adding about 10mm will make for a slightly larger than 2mm wall on the finished peice
[23:43:42] <rue_house> too thin eh?
[23:44:40] <rue_house> how about this, how about I bore out some 1/2" plate with a 2.25" hole?
[23:45:04] <rue_house> OR, make enough washers to build it up to 1/2"
[23:45:14] <rue_house> the big square washers
[23:46:03] <rue_house> or you could add a extra reduction pulley to your drillpress and make a fly cutter
[23:46:40] <rue_house> katsmeow-afk, <comm check, 1, 2, comm check, check, check>
[23:46:40] <katsmeow-afk> drill press is still 50 yrs old
[23:46:49] <rue_house> its a good one then!
[23:47:26] <rue_house> does it already do really low rpm?
[23:47:28] <katsmeow-afk> with bad gearings, bent spindle, and was never spinning true
[23:47:32] <rue_house> mine goes down to about 150
[23:47:37] <katsmeow-afk> no
[23:47:42] <rue_house> hmm
[23:47:52] <katsmeow-afk> the lil one did, but i but the ac motor back on it
[23:48:03] <rue_house> well, the 1/2" plate and washer ideas still stand
[23:48:24] <rue_house> hmm, the word off wasn't in there
[23:48:40] <rue_house> I'm prolly gonna add an extra pulley to mine
[23:48:46] <rue_house> interpulley
[23:48:51] * katsmeow-afk nods
[23:49:07] <katsmeow-afk> use a gearmotor, or any dc pm motor
[23:49:50] <katsmeow-afk> the 1/2hp 4 pole dc motor i got for it ran a nice rpm at 24v and did great for tapping at 12v, and instant fwd-rev at 12v too
[23:50:23] <rue_house> I'm just thinking that the belt may not be sufficient
[23:50:46] <katsmeow-afk> but chain is pretty low rpm too
[23:50:46] <rue_house> I suppose a 1/2" variable speed DC with a synchro pulley would be a good one
[23:50:53] <katsmeow-afk> cog belt wold do it
[23:51:09] <rue_house> I dont know if they make narrow ones
[23:51:25] <katsmeow-afk> cog timing belts last in car engines for 1000 hrs at 60mph
[23:51:46] <rue_house> I saw a cog belt pass me once...
[23:51:57] <rue_house> it was mine, power steering didn't work so good after
[23:52:01] <rue_house> or brakes
[23:52:10] <rue_house> mini vans are really heavy
[23:52:11] <katsmeow-afk> did you see the various movies on the new Atlas robot?
[23:52:15] <rue_house> yea
[23:52:28] <rue_house> I hate the way boston dynamics robots cant hold their feet still
[23:52:47] <rue_house> less that little lift and twist excersize
[23:52:54] <katsmeow-afk> yeas, my gmc is power steering over brakes, and it's all run ogg one serpentine belt
[23:53:59] <rue_house> there is a great joke ogg the tip of my toung, but I cant quite work it out
[23:54:25] <katsmeow-afk> lemme get the sizzors
[23:58:36] <rue_house> so, I dunno
[23:58:59] <rue_house> is shipping still $5 if you buy something in the states and get it shipped to canada?
[23:59:52] <rue_house> I ahve a bit of 1/2" plate