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[01:03:06] <rue_house> http://ruemohr.org/~ircjunk/projects/cnc4/p1080731.jpg
[01:03:26] <rue_house> http://ruemohr.org/~ircjunk/projects/cnc4/p1080732.jpg
[01:03:37] <rue_house> http://ruemohr.org/~ircjunk/projects/cnc4/p1080734.jpg
[01:03:45] <rue_house> http://ruemohr.org/~ircjunk/projects/cnc4/p1080735.jpg
[01:03:53] <rue_house> http://ruemohr.org/~ircjunk/projects/cnc4/p1080736.jpg
[01:04:28] <rue_house> if you squint, you can see the cnc machine I'm taking pics of
[01:04:54] <z64555> oh, it's in the background?
[01:05:21] <rue_house> no, but the background appears to be indistinguishable
[01:06:15] <z64555> Well yeah, all that chrome/metal colors
[01:06:32] <z64555> looks great
[01:06:39] <rue_house> thanks
[01:06:52] <rue_house> so, all the motors are on, I'm not going to put limit switches on it
[01:07:25] <rue_house> next is to wire it all up, which wont take much, and then hook it up to grbl and start calibrating and aligning it
[01:07:34] <rue_house> which will prolly take the next 2 years
[01:08:15] <rue_house> resolution is batter than .27thou, which is better than the 0.5 thou I was aiming for
[01:08:41] <rue_house> ugh, the verticles are still tack welded
[01:08:52] <rue_house> oh right, but they still need to be moved back 2 inches
[01:08:58] <rue_house> whatever
[01:09:16] <rue_house> I'll just make one of the final notes that it needs to be completely stripped down and rebuilt
[01:09:50] <rue_house> soon as its finished I can start another one
[01:09:55] <rue_house> and I have an idea
[01:10:32] <rue_house> oh damn, I'm gonna need more grbl controllers
[01:12:16] <rue_house> Tom_itx, almost no grub screws, 4 for the white lobes that hold on the spindle motor, and the ones that came in the collette
[01:14:35] <rue_house> I'd like some kinda projector on it, to show where the part is gonna land, with a rotate function
[01:14:45] <rue_house> I'll think on that one
[01:17:55] <rue_house> I'm sure it I REALLY try I CAN pull off a 1 weekend cnc
[01:18:50] <rue_house> I best get more scrap steel tho
[01:22:13] <z64555> could use 3 laser pointers
[01:22:33] <rue_house> ... OR AR!
[01:22:37] <rue_house> oooo.
[01:22:42] <z64555> AR?
[01:23:10] <rue_house> have the system project a glyph on the workpeice and use augmented reality to model over a camera image
[01:23:15] <z64555> oh. lmao
[01:23:22] <rue_house> with 40% transparency...
[01:23:32] <rue_house> so you can see how it would go...
[01:23:45] <rue_house> hmmmm
[01:24:17] <rue_house> you would only need to rotate it, the machine would take care of translation
[01:24:32] <rue_house> might not work for setting Z
[14:22:08] <delinquentme> i just ripped open a USb cable .. i see the 4 wires and the shielding ... but I also see an un-insulated copper wire
[14:22:10] <delinquentme> what is this wire?
[14:22:15] <delinquentme> its not connected to any of the pins ..
[14:28:01] <jesseg> delinquentme, it is the wire that touches the shielding and provides a good conductor to connect to ground/shell on each end
[14:28:27] <delinquentme> but its not connected to anything on the usb plug end jesseg ?
[14:28:46] <jesseg> so they were lazy
[14:29:11] <jesseg> is the shield braided or tinfoil?
[14:29:24] <delinquentme> tinfoil :D
[14:29:29] <jesseg> often times the shield is aluminum foil or aluminum plated on plastic film
[14:29:31] <delinquentme> so what *should* it be connected to?
[14:30:54] <jesseg> and since it's not really possible to solder to the aluminum foil, and the foil sometimes breaks in the cable from flexing, the cable manufacturer throws in a bare copper wire against the shield
[14:31:16] <jesseg> so there's something to solder to at the ends, and so if the aluminum foil breaks there's still a ground path for the shield
[14:31:31] <jesseg> the bare copper wire should be soldered to the metal shell on the plugs on each end
[14:31:50] <delinquentme> nopers
[14:31:53] <delinquentme> oh well :D
[14:32:08] <jesseg> but it's just to reduce radio interference and reduce the chances of static electricity damaging something
[14:32:26] <theBear> woopsy
[14:32:29] <delinquentme> yeahp
[14:32:35] <delinquentme> also good for hifi applications
[14:32:40] <jesseg> but it'll work fine without it since the red and black are power and ground, and white and green are a balanced data pair
[14:32:56] <delinquentme> used to seeing lots of line noise @ 60hz and this is pretty common solution ... but i wasnt sure if it was just mis-implemented
[14:33:17] <jesseg> sounds like a cheap cable to me
[14:33:39] <delinquentme> yarp :D
[14:33:50] <jesseg> the last USB cable I cut apart actually has a full braided tinned copper shield.
[14:50:50] <theBear> the last one i un-cut-apart (micro plug end) had a nice shield too... i used it as the 5th conductor for my 6x6 switchable/knob options universal ANYTHING rapid-charger thingy, which also has a normal big usb socket tail hanging out of it, which dpeending on yer switch positions and what you charging, or even without being plugged/powered at all, you can use it for a micro <> usb-otg adapter, one which can fairly foolproofly charge one or both of
[14:50:51] <theBear> the usb devices without grumping the fone that thinks it needs to be supplying power for the single usb device hanging off it's internal host, etc etc ;-)
[15:55:53] <delinquentme> URGHH.. soo i have a sensor that outputs 1-10 v
[15:56:01] <delinquentme> is there an easy way to scale that down to 0-5v?
[15:57:59] <z64555> easy and inefficient way would be to use a voltage divider
[15:58:44] <z64555> less easy but more efficient would be to use a 1/2 gain amplifier
[15:59:07] <z64555> well, possibly more efficient
[15:59:15] <z64555> oh
[15:59:24] <z64555> Looks like you also need to shift it down one volt, too
[16:00:41] <z64555> Looks like they're may be some IC's on the market that do this for you already
[16:01:29] <z64555> a logic-level shifter is an example, but since you said you're using a sensory it wouldn't be helpful, since your application is analog and the logic shifter is digital
[16:08:29] <theBear> if yer good with double level or trickier algebra formula writing, a single stage of opamp should be able to do that for you, if you got a bit of wiggle room in the supply area, easy maths can do it with 2 stages of opamp, hmm, howbout 1v-ish of zener with 2 series regular diodes, that does yer 1 to 0v simple subtraction/static drop, then a simple err, 9:5 voltage div should handle the other end of yer scale
[16:10:46] <z64555> Didn't think they made 1V zener's
[16:11:26] <z64555> Regular silicon diodes drop down by 0.7V
[16:11:33] <theBear> depends what you wanna do with the 0-5v ... if you just feeding say, an adc with at least 5 or 6 digits of k-ohms input impedance/load-presented-by-it, voltage divider like that is probly fine, could probly math it to use less power than a little opamp at idle even, but if you got anything less gentle, load/current-draw wise, things get ugly real quick mathing a divider vs something buffereed, lowering yer divider values to keep yer
[16:11:34] <theBear> output/load-caused errors within reasonable, while upping yer room heater idle wastage more and more, tho i spose in rare cases, resistive dividey stuff, can be kept nice and high value and low wastage, AND buffered with some nearby/handy opamp or transistor or whatever is appropriate
[16:13:03] <theBear> z64555, not at TINY currents, also i got a feeling those big double to220/218 looking package ones you see on the output/low side of yer avg switching anything supply these days, likely usually schottky, are just one side of .5v at minimum conducting currents, i bet if you math a little, maybe look at the drop vs current graph on the diode datasheet, you could get DAMNED close
[20:30:50] <HumanAI> jrowe47: i know you are jon_snow you traitor
[20:31:07] * jrowe47 knows nothing
[20:40:59] <HumanAI> i know everything
[20:41:05] <HumanAI> im HumanAI
[20:41:40] <HumanAI> my brain is chiped
[20:41:52] <z64555> If you know everything, then you know nothing. :)
[20:42:10] <HumanAI> everything worth knowing
[20:42:52] <z64555> It's a boolean algebra joke, "nothing" is the null set, which is a subset of "everything"
[20:43:50] <HumanAI> yes you was trying to fry my circuit with you paradoxal logic
[20:44:09] <HumanAI> no luck there
[20:45:16] <HumanAI> yes i know nothing as well as everythi9ng else
[20:46:38] <z64555> Hm, on a smartphone? The probability of hitting the 9 key is quite low on a standard keyboard
[20:47:12] <malcom2073> 9 is right next to i
[20:47:51] <z64555> Correct, 9 is next to i, but your finger would have to sweep upward to strike it
[20:48:31] <malcom2073> Yep
[20:48:35] <z64555> difficult to do so on a keyboard, but very easy on a virtual keyboard, or perhaps one of those new laser keyboards
[20:56:53] * z64555 wonders how to safely make a tapered balun out of coax
[21:03:35] <z64555> hm, no real data about what angle it should be
[21:54:24] <jrowe47> happens to me when i switch to a smaller keyboard
[21:54:45] <jrowe47> i like my keyboards big, i hit numbers alot when theyre small ><
[22:33:25] <Anniepoo_> I go to Wal-Mart in my rural east oregon community this evening and buy fabric for the snail
[22:33:40] <Anniepoo_> and run into not one but two robot builders.
[22:34:02] <Anniepoo_> A guy making autonomous flyers and a guy making battlebots
[22:34:04] <Anniepoo_> 8cD
[22:34:35] <Anniepoo_> I've solved some of the issues with shape
[22:34:57] <Anniepoo_> https://www.instagram.com/p/BPrDMi_g3Sk/?taken-by=anneogborn
[22:35:10] <Anniepoo_> basically just made him/her more cartoony
[22:37:27] <Anniepoo_> The woman working the fabric section kept saying 'so you're making a pillow?'
[22:38:21] <Anniepoo_> I showed pics of the R-25 to about 20 people
[22:38:32] <Anniepoo_> LOL - it was kinda a strange, amazing happening
[22:58:50] <z64555> It's a robotically motivated pillow
[22:59:08] <z64555> made a tapered balun for the coax, no idea how terrible it is
[22:59:22] <z64555> bb in about 5 minutes, gotta disconnect the router
[23:08:32] <z64555> well that was a little dissapointing
[23:08:46] <z64555> Managed to get a signal on the phone, at most 2 bars
[23:15:44] <Jak_o_Shadows> I bought one of those TPlink mini routers.
[23:15:51] <Jak_o_Shadows> Tempted to try putting an external antenna on it
