#garfield Logs
May 17 2020
#garfield Calendar
10:07 AM Tom_L: test again
10:12 AM polprog: testing c-log ?
10:19 AM Tom_L: yeah
10:52 AM Tom_L: rue_mohr, this is how you should be making your triggers: https://www.youtube.com/watch?v=76GPI1VdRJ8
11:02 AM polprog: 8 may i was building the ULN thingy
11:02 AM polprog: when was i testing the cores..
11:02 AM polprog: rue_mohr: i cranked up the frequency of the core test rig from 200 to 2000Hz.. getting a bit different waveforms now
01:24 PM rue_bed: you want a current ramp
01:24 PM rue_bed: /|
01:28 PM rue_bed: what is that material they do the mold with?
01:28 PM rue_bed: is that rubber!?
01:29 PM rue_bed: youtube is going too ad crazy
01:39 PM Tom_L: i think i'ts rubber
01:48 PM rue_mohr: I'm still amazed it doesn't burn...
01:55 PM Tom_L: try pouring some on your truck tire :)
01:55 PM Tom_L: good test...
02:02 PM rue_mohr: heh
02:02 PM rue_mohr: rubber has funny thermal properties, so, it wouldn't completely surprise me, but... hmm
02:08 PM Tom_L: find an old piece or tire and try it. i doubt you would get the raw materials & equipment to do it but it did raise an eyebrow
02:08 PM rue_mohr: its all steel belted
02:08 PM rue_mohr: and that had to be soft rubber, look at the way he cuts it
02:09 PM rue_mohr: how about really high temp silicone?
02:09 PM Tom_L: uncured rubber
02:25 PM rue_mohr: high temp silicone is good way over the melting point of aluminum
02:36 PM polprog: lets try my hand at a royer osc
02:38 PM Tom_L: rue_mohr, now you got 1 more project to try
03:03 PM rue_mohr: heh
03:03 PM rue_mohr: I still need to finish the new kernel for my computer
03:03 PM rue_mohr: I'm running on a "mostly works" version
03:04 PM Tom_L: i wish i knew what half those settings did
03:04 PM Tom_L: got the rpi set up fairly nice
03:04 PM rue_mohr: ok
03:06 PM polprog: not a sight of oscillation
03:06 PM polprog: maybe not enough windings...
03:06 PM rue_mohr: polprog,
03:06 PM polprog: yes
03:06 PM rue_mohr: if you have the feedback wrong, it'll short and burn up
03:06 PM rue_mohr: so give it current limiting
03:07 PM rue_mohr: the feedback votlage should be about 2V
03:07 PM polprog: id be happy if it did that even
03:07 PM polprog: hmm
03:07 PM polprog: ok, that would explain
03:07 PM polprog: wrong count ration
03:07 PM polprog: ratio*
03:07 PM rue_mohr: so, if you have a transformer with 0.5V/turn, give the feedback 4 turns
03:07 PM rue_mohr: you *might* need aseries resistor in the feedback coil
03:08 PM rue_mohr: and you need to bias one side of the feedback coil up about 3V
03:08 PM polprog: https://upload.wikimedia.org/wikipedia/commons/e/e5/Royer_Circuit1.gif
03:08 PM polprog: so not this?
03:08 PM rue_mohr: never ever use wikipedia information for real world stuff!
03:08 PM polprog: lol
03:09 PM polprog: ok, i have 2x17 for the main coil
03:09 PM polprog: and 4 windings on the fb coil
03:10 PM aandrew: rue_mohr: I was just curious if the trifilar winding was just out of laziness or if you were actually trying to do something special with the extra coupling it provides
03:18 PM polprog: i have both transistors off all the time
03:21 PM polprog: which is weird..
03:22 PM polprog: bc547.. Ib=1.2mA, Ic~=5mA
03:23 PM polprog: does not seem right for a bc547
03:30 PM rue_mohr: 1V/turn is a bit heavy, run it at 5V
03:30 PM polprog: trying a different transformer now
03:30 PM rue_mohr: aandrew, just lazy
03:30 PM rue_mohr: :)
03:30 PM aandrew: :-) nothing wrong with that
03:30 PM polprog: but this is extremely weird,, i have a BC547 that just doesnt seem to turn on
03:30 PM rue_mohr: polprog, show circuit!
03:30 PM aandrew: you mentioend 1V/turn as well
03:30 PM polprog: sec
03:35 PM polprog: https://pasteall.org/pic/2f164ca7cb4d4cf7b4be2ad31fcdb445
03:35 PM polprog: rue_mohr:
03:41 PM rue_mohr: yea you want less than 1V/turn
03:42 PM rue_mohr: polprog,
03:42 PM rue_mohr: the bias voltage is too high
03:42 PM rue_mohr: take a 1k off one side
03:42 PM polprog: and?
03:42 PM rue_mohr: and do a voltage divier that gives you 2-3V on just *one* of the transistors
03:42 PM polprog: ok
03:42 PM polprog: 33k+10k?
03:43 PM rue_mohr: if it wont oscillate, swap the feedback around
03:43 PM rue_mohr: sure
03:43 PM rue_mohr: I think once its running, it overrides them
03:43 PM rue_mohr: the BE junction of the transistors takes over
03:43 PM polprog: thats why i went for the 10k
03:46 PM polprog: the divider gets verriden from 2.7V to 9V
03:46 PM polprog: overriden*
03:50 PM rue_shop1: it needs to be able to override the bias tho I think
03:50 PM rue_shop1: ah, when I tried resistors that were too big, it didn't work either
03:51 PM rue_shop1: in some cases I had to come down to about 470 ohms
03:51 PM polprog: ok.. lets try 1k and...
03:52 PM polprog: 1k and 5k
03:54 PM polprog: nothing, with bias winding either way
03:54 PM polprog: 48mA current draw
04:02 PM polprog: rue_mohr: maybe the 100Rs are to high?
04:02 PM polprog: for some reason it keeps being biased
04:03 PM polprog: the bjts keep being saturated*
04:04 PM polprog: wait, no, if they were saturated the base would be at .6V
04:04 PM polprog: bases are at 8.25 and 8.16V
04:21 PM rue_shop1: ?
04:21 PM rue_shop1: did you use a supply capabale of lots of amps?
04:21 PM rue_shop1: if so, maybe they just both popped right away
04:22 PM rue_shop1: I was testing via a 10R supply limiter
04:22 PM rue_shop1: if I applied power and there was no sign of oscillation within a second I pulled the power
04:23 PM polprog: lets crank up the cc limit...
04:23 PM rue_shop1: sorry, ma had me make bacon this morning, just finished
04:23 PM polprog: 500mA
04:23 PM rue_shop1: 300mA should be fine
04:23 PM polprog: i had 250
04:23 PM rue_shop1: are the transistors ok?
04:23 PM rue_shop1: oh wait, what did you use for a core?
04:24 PM rue_shop1: if its not really high u, that might be the issue
04:25 PM polprog: using the ferrite one that worked very well with the DCDCs
04:25 PM polprog: https://pasteall.org/pic/1b8059b40c134a7c818fa8edaf1eec42
04:25 PM rue_shop1: no, not that
04:26 PM rue_shop1: u isn't even close
04:26 PM polprog: hmm
04:26 PM rue_shop1: show me what else ya have
04:26 PM rue_shop1: a common mode choke core is good
04:26 PM rue_shop1: (but not the ones like that)
04:27 PM polprog: got some from SMPSses. centertapped
04:27 PM rue_shop1: aha, that explains your inductance tests too
04:27 PM rue_shop1: the power filters
04:27 PM rue_shop1: remember the thing I 3d printed a new spool for?
04:27 PM polprog: yep. im short on magnetics and i have no idea about the parameters of the ones i have
04:28 PM rue_shop1: yea, I got guesses based on application
04:28 PM aandrew: https://3dwarehouse.sketchup.com/model/8a3598d8ed3a38f29ff03f41038bd060/FWW-Workbench is a nice looking basic workbench
04:28 PM aandrew: and it comes completely apart too
04:28 PM rue_shop1: have a power supply with one of those emi filters?
04:28 PM polprog: https://pasteall.org/pic/a921f39fbde14d739f1092a785beb0ca
04:28 PM rue_shop1: the one on the right
04:28 PM rue_shop1: with the seperated coils
04:28 PM polprog: common mode choke
04:29 PM rue_shop1: yea
04:29 PM rue_shop1: its really high u
04:29 PM polprog: id have to fit the yeah, it was pretty good.
04:29 PM rue_shop1: ~ 1mH/ 12 turns
04:29 PM polprog: id have to fit the feedback winding somehow
04:29 PM polprog: in it
04:29 PM rue_shop1: it *should* come apart easy
04:29 PM rue_shop1: sometimes they glue the damn thigns
04:29 PM rue_shop1: unwind/rewind it
04:29 PM polprog: looks glued..
04:29 PM rue_shop1: have and solinoids from printer clutches?
04:30 PM rue_shop1: :/
04:30 PM polprog: lets try
04:30 PM polprog: no, i dont think i have those
04:30 PM rue_shop1: ;) you need some laser printer parts
04:30 PM rue_shop1: there can be up to 2 in computer power supplies
04:30 PM rue_shop1: but any mains switching supply should have a filter with one
04:31 PM polprog: not visiting mu usual sunday moneywasting place due to known reasons
04:31 PM rue_shop1: those beads I found are an anomoly
04:31 PM polprog: i should call up some scrapyards
04:32 PM polprog: get them to put computer cards aside for me.. they are worthless for them
04:32 PM rue_mohr: na, find an alley
04:32 PM polprog: they got for the chassis
04:32 PM polprog: nit many alleys here
04:32 PM polprog: not*
04:32 PM rue_mohr: hmm
04:32 PM polprog: the closest is the forest where i found the TV
04:32 PM rue_mohr: if you go 8 neighbours, 4 to your left and 4 to your right, you can polly get 2 computers
04:33 PM polprog: there were also car parts (torn apart dashboard) but the indicators and the carputer were gone
04:33 PM rue_mohr: ...
04:33 PM polprog: oh yeah
04:33 PM rue_mohr: did you get the flyback fro the tv?
04:33 PM polprog: yeah
04:33 PM rue_mohr: will the core just fall out of the flyback if you remove the metal bracket?
04:33 PM polprog: hmm. i havent desoldered the flyback yet
04:33 PM rue_mohr: its gapped, which changes the saturation
04:33 PM rue_mohr: ah
04:33 PM rue_mohr: ?
04:34 PM polprog: the tv was smashed by the hobos, flyback was on its own small PCB shard
04:34 PM polprog: ;)
04:34 PM polprog: fuck, it was an E code
04:34 PM polprog: core*
04:35 PM polprog: not its an E core, a C core and an L core..
04:35 PM polprog: great..
04:36 PM polprog: ok.. now i have an air transformer
04:37 PM rue_shop1: ?
04:38 PM rue_shop1: should be twi U
04:38 PM rue_shop1: oh
04:38 PM polprog: no, it were two E
04:38 PM rue_shop1: it broke?
04:38 PM polprog: yeah
04:38 PM rue_shop1: not the flyback?
04:38 PM polprog: no, the choke
04:38 PM rue_shop1: ok
04:38 PM rue_shop1: that happens
04:38 PM polprog: yeah.. it was glued pretty well
04:38 PM rue_shop1: yea
04:39 PM rue_shop1: sometimes their already fractured
04:39 PM polprog: im trying to make the VFD supply based on your last one
04:39 PM rue_shop1: k
04:39 PM rue_shop1: well
04:39 PM rue_shop1: lets see
04:40 PM rue_shop1: the bead I used, it half of one used around an analog line for noise reduction
04:40 PM rue_shop1: like USB cords?
04:40 PM rue_shop1: maybe?
04:40 PM rue_shop1: or high quality power cords?
04:40 PM polprog: lets see
04:40 PM rue_shop1: what do you have?
04:40 PM polprog: i have one similar to yours
04:41 PM rue_shop1: do you know what its from?
04:41 PM rue_shop1: you know the usb cords that have a bead on them/
04:41 PM rue_shop1: ?
04:41 PM polprog: yeah
04:41 PM rue_shop1: its molded in
04:41 PM rue_shop1: if you have one, I can test over here first
04:41 PM rue_shop1: Ihave a ... crude inductance meter
04:42 PM polprog: let me look
04:42 PM rue_shop1: hey, VGA cables have them too
04:42 PM polprog: i have one that came from a cable
04:42 PM polprog: mains filter in a psu
04:43 PM polprog: the mains cables were wound around it
04:43 PM rue_shop1: IN?
04:43 PM rue_shop1: ok
04:43 PM polprog: in, but not on the pcb
04:43 PM rue_shop1: if its designed fro just one pass with a cable its more likley
04:43 PM rue_shop1: yea
04:43 PM rue_shop1: you dont have any old vga cables eh?
04:43 PM rue_shop1: or usb cables you can cut up?
04:44 PM polprog: let me look for some
04:45 PM polprog: got one
04:53 PM rue_shop1: a which?
04:54 PM polprog: a bead on a broken usb extender
04:56 PM rue_shop1: ok, let me try one first here
04:58 PM rue_mohr: twitter like cable?
05:00 PM polprog: where?
05:00 PM rue_mohr: twitter
05:00 PM rue_mohr: :) whats the twitter propigation delay...
05:00 PM polprog: ok, got this ferrite bead out.. height 2cm, outer d =1.2cm, inner d=0.5
05:01 PM polprog: dont see anything yet
05:01 PM polprog: on twitter
05:01 PM rue_shop1: ...
05:01 PM polprog: ill mark it..
05:02 PM rue_shop1: I'm just carving
05:02 PM rue_shop1: it might come up in mentions
05:03 PM polprog: not yet
05:03 PM polprog: carving?
05:03 PM rue_shop1: twitter is odd, I'm still trying to understand its propigation mechanisims
05:04 PM rue_mohr: wrong polprog
05:04 PM polprog: lol
05:04 PM polprog: maybe i should try to reclaim @polprog
05:06 PM polprog: youre following me,, shouldnt it show up in autocomplete?
05:06 PM rue_shop1: so this is...
05:07 PM rue_shop1: 11.5mmx5mmx20mm long
05:07 PM rue_shop1: length is supposed to be 3 dimentional, right?
05:07 PM polprog: uhh
05:07 PM polprog: id say yiu should give length, inner d, outer d like i did
05:07 PM rue_shop1: so were close
05:09 PM rue_shop1: ok got my 10 turn test coil
05:09 PM rue_shop1: 280uH
05:09 PM rue_shop1: :/
05:10 PM rue_shop1: thats ok, but not great
05:11 PM polprog: i could whip up a collpitts osc quickly and find out the inductance
05:11 PM polprog: i have the schem of my last one open
05:11 PM rue_shop1: its about 280uH/10 turns
05:11 PM rue_shop1: good is 780uH
05:11 PM polprog: let me check mine
05:11 PM polprog: where is the figure from?
05:11 PM rue_shop1: the cheap chineese thing I have
05:11 PM rue_shop1: 1 sec
05:14 PM rue_mohr: picture of the tester there for what its worth
05:14 PM rue_mohr: :) did you put the 3 on it?
05:16 PM rue_shop2: http://zpostbox.ru/how_to_determine_permeability_of_unknown_cores_online_calculator.html
05:16 PM polprog: rue_shop2: yes
05:17 PM polprog: ok, trying to get the colpitts running on it
05:17 PM rue_shop2: so, the program says that the u of my core is 840
05:17 PM polprog: lets put 10 windings
05:17 PM rue_shop2: I think thats ur
05:17 PM polprog: ill cehck that
05:17 PM polprog: with 3 windings the colpitts doesnt start..
05:17 PM polprog: need to find a different cable
05:18 PM polprog: at leat 40 cm for 10 windings
05:20 PM polprog: least*
05:20 PM polprog: ugh
05:23 PM polprog: 10
05:23 PM polprog: it oscillates!
05:24 PM polprog: 89.770kHz
05:24 PM polprog: (the colpitts, now let me work out the inductance and permeability)
05:25 PM polprog: 92kHz
05:29 PM polprog: im gettin 181uH...
05:29 PM polprog: from the maths
05:29 PM polprog: 10 windings
05:30 PM polprog: computer says permeability is 516
05:30 PM polprog: rue_shop2
05:32 PM rue_shop1: :)
05:32 PM rue_shop1: using your usb bead?
05:32 PM polprog: yeah, core nr 3
05:32 PM polprog: ;)
05:32 PM rue_shop1: ok
05:33 PM rue_shop1: so
05:33 PM polprog: i know what im doing next!
05:33 PM rue_shop1: how many turns for ~1mH
05:33 PM rue_shop2: 19 turns
05:33 PM polprog: calculator says 23
05:33 PM rue_shop1: good ballpark
05:34 PM polprog: gonna be difficult with this wire
05:34 PM rue_shop1: so, give it two turns ~1mH
05:34 PM rue_shop1: what wire you using?
05:34 PM polprog: lets try..
05:34 PM polprog: looks like regular wire from a 40 pair telephone cable
05:34 PM rue_shop1: have an old iron transformer you can tear into for wire?
05:34 PM polprog: i got some thin wire
05:34 PM rue_shop1: oh dont use what I did
05:34 PM rue_shop1: thats old telco wire I use for testing
05:34 PM aandrew: so, late birthday present for me... I got a 12" compound sliding mitre saw that was almost 60% off (just canadian tire brand but wanted a 12" so I could cut 4x4s without playing games
05:34 PM polprog: i have some enamel wires in the box
05:34 PM aandrew: rue_shop1: I like to use solid ethernet wire for that :-)
05:34 PM rue_shop1: aandrew, :)
05:35 PM polprog: for 20 turns id need at least 80cm
05:35 PM rue_shop1: polprog, about 1m is more than enough for multifillar
05:35 PM rue_shop1: haha
05:35 PM polprog: haha
05:35 PM aandrew: that's why I'm now looking at sketchup/etc, gotta build a few workbenches and stuff to start actually making useful workspace in the garage
05:36 PM rue_shop1: I have two screws in the bench about 3m apart, and I always ahve lots left over
05:36 PM rue_shop1: aandrew, I wasn't sure how much space you have
05:36 PM polprog: 150cm should be enough
05:37 PM aandrew: rue_shop1: I've basically got a full garage bay, I'd say actually very close to your workshop in space
05:37 PM rue_shop1: nice
05:37 PM rue_shop1: I need 1200 square feet :/
05:38 PM rue_shop1: but I have to go make some deer protectors for the garden just now
05:38 PM rue_shop1: polprog, post pics ok'
05:38 PM rue_shop1: ?
05:39 PM rue_shop1: I found a soic8 on the floor
05:39 PM rue_shop1: 93LC46
05:39 PM rue_shop1: :/ eeprom
05:40 PM rue_mohr: polprog, you need 2 coils tho,
05:40 PM rue_mohr: do biillar
05:41 PM rue_mohr: then you wound them both at once
05:41 PM polprog: crap
05:41 PM polprog: i need a thinner wire then
05:42 PM aandrew: https://imgur.com/a/DaPvGkx
05:42 PM aandrew: I want more space but $$$
05:42 PM rue_mohr: heh it full up. :)
05:43 PM aandrew: VERY messy right now
05:43 PM aandrew: But the idea is some pallet shelving and work benches to get things up of the
05:43 PM aandrew: Off the floor
05:43 PM rue_mohr: :)
05:43 PM rue_mohr: I have to process a bunch of space
05:44 PM rue_mohr: if my garbage can isn't full, I'm not working hard enough
05:44 PM polprog: wish i had a garage
05:44 PM polprog: https://polprog.net/rozne1/ircjunk/newbench.jpg
05:44 PM polprog: oldish pic
05:44 PM aandrew: Haha yes. I have lots of crap
05:45 PM aandrew: I should show my “office” in the basement
05:45 PM polprog: rue_mohr: 1uH total or 1uH each tap?
05:46 PM rue_shop1: 1mh ea
05:46 PM rue_shop1: ~1mh
05:47 PM rue_shop1: aka 0.870-1.5mH
05:47 PM polprog: so how do i wind it? two strand wire, then separate and solder two ends?
05:47 PM rue_shop1: yea
05:47 PM polprog: ok
05:47 PM rue_shop1: pair some wire
05:47 PM rue_shop1: give it twist to hold it togethor
05:47 PM polprog: i have this relay coil, i take wire from this
05:47 PM rue_shop1: do the 23 turns
05:47 PM rue_shop1: trim and tin the leads
05:47 PM rue_shop1: work out who is who and solder to a pinheader
05:53 PM aandrew: https://imgur.com/a/DaPvGkx there is the dungeon^Woffice now too
05:53 PM polprog: fuck
05:53 PM polprog: the wire snapped
05:55 PM polprog: this is too thin
06:04 PM polprog: ok.. got 2x16 using kynar
06:04 PM polprog: the relay wire is too thin, falls apart
06:04 PM polprog: thinner than my hair
06:06 PM polprog: now the bias winding
06:06 PM polprog: rue_shop1:
06:07 PM aandrew: polprog: that must be some real fine threads
06:07 PM polprog: its sub 0.1mm
06:08 PM polprog: 16 gives me 416uH
06:08 PM polprog: 462uH
06:08 PM polprog: x2
06:09 PM polprog: how many windings for the bias? 4?
06:12 PM rue_shop1: did it snap when you were twisting it?
06:12 PM polprog: yeah
06:12 PM polprog: i got two pairs of 16 windings of kynar wire on the core now
06:12 PM rue_shop1: hmm, some relay wire is really small
06:13 PM rue_shop1: 23 turns?
06:13 PM rue_shop1: the bias should be ~2V
06:13 PM polprog: no, 16. 23 wont fit
06:13 PM rue_shop1: k
06:13 PM polprog: so 16:12... 2 or3 windings?
06:13 PM rue_shop1: so 12V/16 turns
06:13 PM rue_shop1: *4V
06:14 PM rue_shop1: 3 turns
06:14 PM rue_shop1: the core might saturate at that volts/turn
06:14 PM polprog: spot on. its packed tight
06:14 PM rue_shop1: but thats how a royer works, so maybe your ok
06:15 PM rue_shop1: as such, a royer osc will run warm
06:15 PM rue_shop1: I dont think they can run cold
06:15 PM rue_shop1: might be wrong, havn't worked with them long :)
06:15 PM rue_shop1: as a core saturates, it usually heats up
06:15 PM polprog: see twitter
06:15 PM polprog: ill be heading to bed soon..
06:16 PM rue_shop1: my wire is 0.14mm, its from 24V solinoids
06:16 PM rue_shop1: :)
06:21 PM rue_mohr: we need to find you some magnet wire
06:22 PM polprog: i have some in the basement, grandfather used to repair radios
06:24 PM rue_mohr: ah, well there
06:24 PM polprog: new pic
06:32 PM rue_shop1: by the way, to run a vfd, you want more voltage, so, a few more turns
06:32 PM rue_shop1: but get the osc going
06:36 PM polprog: nothing
06:36 PM polprog: btw
06:36 PM polprog: found another core which has u=4440
06:37 PM rue_mohr: 4440!
06:38 PM rue_mohr: so 10 turns will be much more than 1mH
06:38 PM polprog: yup
06:38 PM polprog: ok. lets see why this one doesnt kick off
06:40 PM polprog: nothing.. all DC
06:41 PM rue_shop1: whats your bias voltage?
06:41 PM rue_shop1: ~3v?
06:42 PM polprog: 10.4.. divider is 51k + 10k
06:42 PM rue_shop1: try lower impendnece?
06:42 PM rue_shop1: I used 1k and 2.2k
06:42 PM rue_shop1: from 12V
06:43 PM polprog: nope
06:43 PM rue_shop1: hmmm
06:43 PM rue_shop1: what transistors again?
06:43 PM polprog: bc547
06:44 PM polprog: oh shit
06:44 PM polprog: im stupid
06:44 PM polprog: i took BC557
06:44 PM polprog: PNP
06:44 PM rue_shop1: wong pinout?
06:44 PM rue_shop1: heh
06:44 PM polprog: aaaaaaA
06:44 PM rue_shop1: :)
06:44 PM rue_shop1: hey, I'll still be up your tommorow morning
06:44 PM rue_shop1: if you want to continue later?
06:44 PM rue_shop1: dont use 547
06:44 PM polprog: ill try the right transistors..
06:44 PM rue_shop1: only 100mA
06:44 PM polprog: waht else have i got
06:45 PM rue_shop1: can you use 2222 or 3904?
06:45 PM rue_shop1: I actually had to go to 1A rated transistor to keep things happy
06:45 PM polprog: i got a BD441
06:45 PM polprog: im short on BJTs
06:46 PM polprog: 4A
06:46 PM rue_shop1: ooo expadatial
06:46 PM polprog: are they
06:46 PM polprog: i just found them in the drawer
06:46 PM rue_shop1: yea use them
06:47 PM polprog: ok, same thing, now takes 226mA
06:47 PM rue_shop1: reverse feedback?
06:47 PM rue_shop1: E C B right?
06:47 PM polprog: yeah
06:47 PM polprog: wait
06:47 PM polprog: ugh
06:47 PM polprog: ECB not EBC
06:48 PM rue_shop1: ;)
06:49 PM polprog: still nothing
06:51 PM polprog: allright.. ill hit the bed
06:51 PM polprog: got a lecture early tomorrow
06:52 PM polprog: ill mess with it later tomorrow
06:52 PM polprog: expatiall. huh
06:53 PM rue_shop1: expanadatial is always a good thing
06:53 PM rue_shop1: :)
06:53 PM rue_shop1: I'm not working tommorow, hail me when your ready
06:53 PM polprog: exponential transistors..
06:53 PM polprog: sure
06:53 PM polprog: thanks ;)
06:53 PM polprog: envy you.
06:54 PM polprog: nighters
06:56 PM rue_shop1: just testing the screen controller now
07:15 PM aandrew: polprog: that must be some real fine threads
08:12 PM rue_mohr: I'm still trying to understand when to use protobaord and when to just etch a pcb
08:13 PM rue_mohr: I got that display driver done way faster than if I'd done it with protoboard
08:13 PM rue_mohr: it doesn't really make sense
08:13 PM rue_mohr: I think its about wire count
08:13 PM rue_mohr: Tom_L, https://twitter.com/RueNahcMohr/status/1262186862623375362
08:14 PM rue_mohr: there is the screen driver I built up since... yesterday?
08:14 PM rue_mohr: been working on the power supply a while tho
08:14 PM rue_mohr: the drivers run cold, which is nice, cause nothing else to do with that screen does
08:14 PM rue_mohr: 5w in total
08:15 PM Tom_L: :)
08:15 PM rue_mohr: I put the postfix on the videos so they aren't quite that easy to steal media from
08:15 PM rue_mohr: seeing strange things on the internet and looks like origional content creaters are a sought-after resource
08:16 PM rue_mohr: it'll fit nice in the 1U case I have
08:16 PM rue_mohr: so, the last physical part to design up is the encoder switch
08:18 PM rue_mohr: the code was just pulled from the last vfd screen project
08:18 PM rue_mohr: bit of adjusting
08:19 PM rue_mohr: I need to ditch the scrolling, drop some of the places from the scanning, and add some code to hilight a place
08:22 PM rue_mohr: I had some 14? segment vfds and passed on them
08:22 PM rue_mohr: a full hd447880 like one too, but thats just cheating
08:23 PM rue_mohr: there is some kinda asthetic target going on here
08:23 PM rue_mohr: I need to make a backplate for the tilt and pan mirror control box
08:36 PM Tom_L: firmware update night
08:40 PM aandrew: hm, might send this ubiquiti router back, I can't shape a gigabit link
08:40 PM aandrew: with no shaping at all it'll do about 600 down and 6 (?!) up, I'm supposed to be 30 up I think
08:49 PM rue_mohr: ouch
08:54 PM aandrew: playing with firewalls definitely requires Cointreau
10:14 PM aandrew: hm, with the blade server I'm getting 800/10
10:14 PM aandrew: so closer, I have to check to make sure I should be 30 up
10:40 PM Tom_itx is now known as Tom_L
11:03 PM rue_shop1: I think the chips on these fiber channel drives are fgpas and I'd really like to know if their play-able
11:24 PM aandrew: hm?
11:24 PM aandrew: fuck guys I'm really sorry, I'm like 300mL into a bottle of Cointreau
11:26 PM aandrew: :-( to the snowbird death over Kamloops. they flew over my house not even a week ago
11:27 PM rue_shop1: oh dear, didn't hear
11:28 PM rue_shop1: hmm, what do I do with 150 4M eeprom chips