#garfield Logs

Jan 24 2015

#garfield Calendar


00:24 rue_house so the guy who designed the build all the nuclear power stations...
00:24 rue_house I dont think humans could turn medical imaging devices into weapons..
00:24 katsmeow nuclear power stations are used as weapons?
00:25 rue_house the nuclear power did
00:25 rue_house I seem to have an inclination to do nothing right now
00:30 katsmeow a 1.8Gigapixel movie image, with 1000's of moving objects tracted by computer on the movie
00:31 katsmeow 368 ccd cameras to make one image
00:41 rue_shop2 cool
00:44 katsmeow this movie is years old
02:33 rue_shop2 yay, I got an arduino with a lcd screen pretending its a scope
02:33 rue_shop2 at full speed
02:34 rue_shop2 maybe about 25ms to the trace
02:34 katsmeow according to speednet.com, my download speed is now 240k bits/sec, and my upload speed is now 40k bits/sec
02:34 rue_shop2 hmm
02:36 katsmeow i need 10 other dsl lines to get decent upload speeds
02:37 katsmeow i'd haveto configure them as tor servers, which wouldn't work for uploading to webhosts or sending email
02:39 katsmeow going to reboot the vista box, maybe it's just clogged up it's socks
02:50 katsmeow nope, that didn't fix anything
02:51 katsmeow you know with 2000 square leds, you could make a 21ft tall vu meter
02:54 rue_house yes, but wouldn't 8ft be sufficient?
02:55 katsmeow sure, then you can do sterio :-)
03:01 rue_house well I got some progress
03:02 katsmeow did you cook it right?
03:02 rue_house I made some great little clips for holding pcb's off plate by about 4mm, each one holds a corner of the board
03:02 katsmeow off a plate?
03:02 rue_house makes for nice mounting of the boards I didn't want to make large enough for screws
03:03 rue_house metal or plastic base plate
03:03 katsmeow ah
03:03 tsmeow was thinking doublesticky tape, and mirror holder c
03:03 rue_house I hate needing to make a board that fits in under 1"^2 into a 2"^2 board just because of 2 mounting screws
03:03 rue_house these hold them away from the surface
03:04 katsmeow so does doublesticky
03:04 rue_house I should put them on thingverse, maybe, I had ideas
03:04 rue_house had stickey come off too much
03:04 katsmeow can you print in a conductive material?
03:04 rue_house and the component pins try to poke thru
03:04 rue_house no conductive yet
03:05 katsmeow i was thinking mezzanine connectors
03:05 rue_house ?
03:05 katsmeow layer pcbs, the connector makes connections tween them
03:05 rue_house ah
03:06 rue_house my boards are all generic and stuff dosn't line up
03:06 katsmeow like the tall pins on arduinos do, but shorter, etc
03:06 rue_house as contradictive as that sounds
03:06 katsmeow According to Larson's search warrant, the Silk Road 2.0 investigation has been based on a six-month infiltration attack launched against Tor
03:07 rue_house ... ok
03:07 katsmeow Despite the use of Tor, FBI investigators were able to identify IP addresses that allegedly hosted and accessed the servers, including the ...
03:07 katsmeow https://www.google.com/search?q=tor&ie=utf-8&oe=utf-8#q=tor&tbm=nws
03:07 rue_house oh
03:17 tsmeow ponders an encrypted
03:27 katsmeow $249 for a tiny router-thing running a vpn software , to bridge from ethenet to ethernet
03:28 rue_house yup
03:31 katsmeow so
03:32 rue_house int translate(int input) {
03:32 rue_house
03:32 rue_house // first bit is EOL current 0 = sense
03:32 rue_house // second bit is alarm current 0 = sense
03:32 rue_house // inputs
03:32 rue_house // b01 = ok - has loop current
03:32 rue_house // b11 = trouble - no current
03:32 rue_house // b00 = alarm - has alarm current
03:32 rue_house // b10 = impossable - has alarm current, but no loop current (hardware fault)
03:32 rue_house
03:32 rue_house // outputs frist bit is green led, second bit is red led.
03:32 rue_house // b11 = all off
03:32 rue_house // b01 = OK
03:32 rue_house // b10 = alarm
03:32 rue_house // b00 = trouble
03:32 rue_house
03:32 rue_house
03:32 rue_house // sort it all into a table
03:32 rue_house unsigned char table[i] = {2, 1, 3, 0};
03:32 rue_house
03:32 rue_house return table[input];
03:32 rue_house
03:32 rue_house
03:32 rue_house }
03:32 katsmeow my isp severely limits upload speeds, will use of a vpn block their ability to see the difference between uploading and downloading?
03:33 rue_house not if its just traffic counters
03:33 katsmeow ?
03:34 rue_house 1am need sleep
03:34 katsmeow o
05:28 tsmeow ponders a small rat swimming right into a gator's mouth, eating the gator frm the inside
05:55 katsmeow you realise a 56k dialup line would be faster than my current upload speed on dsl?
07:15 Tom_itx double sticky tape as in automotive trim tape does not come off.
07:18 katsmeow true
07:23 katsmeow "the weather is benign one minute, and beten the next"
07:50 katsmeow well, ABC News is going to get a big fine for that
07:50 katsmeow they were talking about golf, and golfing equipment,
07:50 katsmeow and unique golf accessories,
07:51 katsmeow and one woman said about the golf club handles "where else can you find a way to dispense a drink out of your wood?
07:52 katsmeow and the censors let it go by,
07:52 katsmeow and then every news anchor on set collapsed in a omg
08:10 katsmeow the accessory was shown on the tv show Shark Tank yrs ago, the golf club called a "wood" because it looks like a wooden mallet, has a hollow handle for putting beverages into
08:10 katsmeow instead of using a real beverage holder
15:31 rue_shop3 http://www.thingiverse.com/thing:549095
17:36 katsmeow it wasn't the pump, it has 3/8 hose barb, the flowmeter has 1/2 iron pipe thread on the outside, and it's thick enough to tap 3/8 pipe threads inside .... is this a good idea?
17:43 tsmeow makes di
19:34 tsmeow puts the tap
19:35 Tom_itx wouldn't you need a tapered hole for the tap?
19:35 katsmeow i dunno why i would
19:35 Tom_itx ok
19:36 katsmeow the tap has a lot of taper on it
19:36 katsmeow i'll be using it at atmospheric, zero pressure
19:38 katsmeow open-tank--screen--pump--pressure tank--dense_filter--UV--flow_meter--open-tank
19:38 katsmeow dense_filter may be an RO filter
19:39 katsmeow or carbon block
19:39 katsmeow but it will have 60psi on one side, zero on the other, the UV and flowmeter will operate with no back pressure
19:55 katsmeow so
19:56 rue_shop2 hmm
19:59 katsmeow i dunno how i will cheaply attach to the flow meters then
19:59 katsmeow paint them pink and melt them down with the cutting torch?
20:14 Tom_itx if it pleases you
21:01 useless-afk it would pleasememore to tap them for the 3/8 hose barbs
21:02 Tom_itx what's stopping you?
21:02 useless-afk no on has said it's a good idea, you said the hole had to be tapered
21:04 Tom_itx no i didn't
21:04 Tom_itx i asked you if it should be
21:04 useless-afk i dunno why it should be
21:05 Tom_itx then tap it
21:05 useless-afk k
21:05 useless-afk too late tonite already, temperature has dropped upstairs
21:43 katsmeow holycarp, harborfreight 12v winches now cost 3x what they did
21:44 katsmeow which makes it cheaper to buy them on ebay :-?
21:45 katsmeow http://www.ebay.com/itm/1500-LB-ATV-WINCH-ELECTRIC-12V-VOLT-RECOVERY-BOAT-TRAILER-TRUCK-PLOW-NEW-/171652810946
21:45 katsmeow $62, i never paid that much, i waited till sale and would pay $30 - $40
22:04 katsmeow must be 5000 listings on ebay for brass or copper(!) dremel collets
22:15 katsmeow this just in
22:15 katsmeow m3 washer= [!what] 0.5mm Thick ; 3.2mm ID ; 7mm OD
22:15 katsmeow m4 washer= [!what] 0.8mm Thick ; 4.3mm ID ; 9mm OD
22:15 katsmeow m5 washer= [!what] 1.0mm Thick ; 5.3mm ID ; 10mm OD
22:15 katsmeow m6 washer= [!what] 1.6mm Thick ; 6.4mm ID ; 12mm OD
22:15 katsmeow m8 washer= [!what] 1.6mm Thick ; 8.4mm ID ; 16mm OD
22:15 katsmeow m10 washer= [!what] 2mm Thick ; 10.5mm ID ; 20mm OD
22:15 katsmeow m12 washer= [!what] 2.5mm Thick ; 13mm ID ; 24mm OD
22:44 rue_shop2 ugh, these mechanical encoder switches are a nightmare of noise
22:45 katsmeow yea,, the selenoid ones will rattle your teeths after a while
22:46 katsmeow oh, you mean the rotoary ones with a potentiometer knob?
22:46 rue_shop2 yea
22:46 katsmeow mine isn't noisey, can't hear itover the puter fan
22:46 rue_shop2 these have detends
22:46 katsmeow yeas
22:46 rue_shop2 the detents always land them on 00
22:47 katsmeow i can hear the push button actuate, but its pretty silent when turning it
22:47 rue_shop2 but I may have to quadrature decode them to flush out all the noise between detents
22:48 rue_shop2 right now I'm watching one channel, and when I get a falling edge I look at the state of the other channel, if its high, increment, if its low, decrement
22:48 rue_shop2 I have .05uF on each channel and I'm still getting some garbage
22:51 katsmeow got pullups or pull downs?
22:51 rue_shop2 up
22:51 katsmeow k
22:52 rue_shop2 I'm trying to think of a good way to filter the noise in software
22:52 katsmeow no
22:52 rue_shop2 or I bump up the capacitors again
22:53 katsmeow use a RC pi filter
22:53 katsmeow or even switch - r - c - avr
22:53 katsmeow dropping a volt in that R will make the C look much bigegr
22:54 katsmeow mind where the C is grounded
22:55 rue_shop2 hmm whats the time constant
22:55 rue_shop2 20k and .05uF
22:55 rue_shop2 to 5V
22:56 rue_shop2 oh with a ... high level trigger of like .5V
22:56 rue_shop2 I need a bigger cap
22:56 katsmeow considering you should not have noise, i wonder if a bigger cap is useful
22:56 rue_shop2 its about .1ms
22:57 rue_shop2 so, I must have noise in excess of .1ms
22:57 rue_shop2 20 counts/rev
22:57 Tom_itx 74HC14 74HC125
22:58 rue_shop2 say about 1rev/sec
22:58 Tom_itx need a couple smt
22:58 Tom_itx rue_shop2,
22:58 rue_shop2 50ms
22:58 rue_shop2 yes?
22:58 Tom_itx want a xilinx jtag?
22:58 e_shop2 s head rotates about the Y
22:59 rue_shop2 does it work with that software?
22:59 rue_shop2 that you started to show me?
22:59 rue_shop2 parallel? serial? usb?
22:59 Tom_itx which?
22:59 Tom_itx parallel
22:59 rue_shop2 hmm
22:59 Tom_itx the webpack stuff?
22:59 Tom_itx yes
22:59 e_shop2 peers around back of his comp
23:00 rue_shop2 hmmmm
23:00 rue_shop2 could you help me make it do soemthing?
23:00 Tom_itx i don't see why not
23:00 Tom_itx i don't remember much though
23:00 rue_shop2 25uF!?
23:01 Tom_itx the fpga need eeprom to store the config cpld don't
23:01 rue_shop2 oh
23:01 rue_shop2 whats a...
23:01 Tom_itx they load it on startup
23:02 Tom_itx my new board had enough eeprom to store 2 configs
23:02 Tom_itx a user one and a backup
23:02 rue_shop2 TMS320
23:02 rue_shop2 oh, nm
23:02 rue_shop2 xilinx XC9536
23:03 Tom_itx xc95108
23:03 Tom_itx 36 only has 36 gates
23:03 Tom_itx pretty tiny
23:03 rue_shop2 XC9572
23:04 rue_shop2 XC2S50E
23:04 Tom_itx dude said he'd send me a couple blank jtag boards
23:05 Tom_itx jtag3
23:05 rue_shop2 XC9572
23:05 rue_shop2 oh that one agian
23:05 rue_shop2 flash chip on the back, hmm
23:05 rue_shop2 i960
23:05 rue_shop2 er, no
23:06 rue_shop2 oh!!
23:06 rue_shop2 XC4005
23:06 rue_shop2 XC4003
23:06 rue_shop2 XC4004
23:06 Tom_itx don't know about those
23:06 rue_shop2 -- thats all the xilinx ones I have --
23:07 Tom_itx that dev board is the only one i have except the cnc control
23:07 rue_shop2 kat, whats 74299?
23:07 Tom_itx and it uses a spartain 8
23:07 Tom_itx 6*
23:07 katsmeow shift register
23:08 rue_shop2 its got 8 of them
23:08 Tom_itx ok this board seems easy enough to interface to
23:08 katsmeow i seem to be in contina.com ?
23:09 Tom_itx don't get a surface pro3
23:09 Tom_itx 2 of the 3 have been replaced
23:10 rue_shop2 the boards with the XCV300 are hopeless
23:11 Tom_itx one didn't even make it out the door before it was replaced
23:12 katsmeow 74299= [!what][!electronics][!integrated circuit] 8-Bit Bidirectional Universal Shift/Storage Register with three-state outputs
23:15 rue_shop2 ok 6.8uF make it worse
23:15 rue_shop2 arg
23:15 katsmeow are yo seeing noise coming out of the avr?
23:16 rue_shop2 I have it show me the counts on the lcd
23:16 rue_shop2 when you turn it fast the count goes up and down randomly
23:16 rue_shop2 if you turn it slow, you might get 3 counts in the same direction before it goes the wrong way
23:16 katsmeow tose controls do have a speed limit
23:17 katsmeow maybe you got a badone
23:17 rue_shop2 the speed limit is over 1 rev/min
23:17 katsmeow wait,, did you get a grey code or a binary code?
23:17 rue_shop2 grey
23:17 katsmeow then you cannot quadreture detect it
23:18 katsmeow i don't remember how many lines you need for grey, but 25 positions in binary is 5 lines
23:19 katsmeow or 2
23:20 katsmeow ok, it was my isp throttling me, but i don't know what they were looking at to do so
23:21 rue_shop2 the knob had detents
23:21 rue_shop2 the detents always land on 00
23:22 katsmeow you get it off ebay?
23:22 rue_shop2 of course
23:23 katsmeow blue, pot metal, half-flatted shaft, 2 leads one side, 3 on the other
23:23 rue_shop2 I just have to work out how to filter the noise on the avr
23:23 rue_shop2 yup
23:23 katsmeow remember the part numer?
23:23 rue_shop2 20 detent mechanical encoder
23:23 katsmeow i have the data sheet on it, but forgot the part number
23:24 rue_shop2 DZ432?
23:24 katsmeow no
23:24 rue_shop2 EC11?
23:25 rue_shop2 ?pt=LH_DefaultDomain_0&hash=item4ac0b0bb9e
23:25 rue_shop2 ugh
23:26 rue_shop2 http://www.ebay.com/itm/EC11-car-ROTARY-ENCODERS-20-Position-Step-level-Modulator-for-DVD-CD-Speaker-/321060387742
23:29 katsmeow that's what i have, but i don't see that number
23:33 katsmeow http://www.ebay.com/itm/3-PIECES-360C-Encoder-Pulse-Code-Switch-Potentiometer-20mm-half-shaft-Axle/131169114581?_trksid=p2047675.c100009.m1982&_trkparms=aid%3D777000%26algo%3DABA.MBE%26ao%3D1%26asc%3D27673%26meid%3D21134f2577d941d786f3442d83f6c64a%26pid%3D100009%26rk%3D1%26rkt%3D1%26sd%3D181565062102
23:33 katsmeow erg
23:34 rue_shop2 sounds right :)
23:35 katsmeow well , http://www.ebay.com/itm/3-PIECES-360C-Encoder-Pulse-Code-Switch-Potentiometer-20mm-half-shaft-Axle/131169114581 has some lil bit of info onit
23:36 katsmeow found it, uploading
23:39 katsmeow designerthinking.com/EC11 series rotary encoders.pdf
23:40 rue_shop2 http://designerthinking.com/EC11&spseries&sprotary&spencoders.pdf
23:40 rue_shop2 http://designerthinking.com/EC11\ series\ rotary\ encoders.pdf
23:40 rue_shop2 hmm
23:40 rue_shop2 http://designerthinking.com/EC11&nbspseries&nbsprotary&nbspencoders.pdf
23:40 katsmeow electric specs ~ 3/4 way down
23:40 katsmeow n
23:41 rue_shop2 how do spaces work in a url again?
23:41 rue_shop2 %20?
23:41 katsmeow yeas
23:41 rue_shop2 http://designerthinking.com/EC11%20series%20rotary%20encoders.pdf
23:41 katsmeow --2015-01-24 23:22:13-- http://designerthinking.com/EC11%20series%20rotary%20en
23:41 katsmeow coders.pdf
23:42 rue_shop2 abdobe read crashed, but I was only given a blank dialog box to figure it out
23:42 katsmeow don't use adobe, it keeps processes running and phones home
23:42 tsmeow uses sum
23:42 rue_shop2 bounce + chatter, is... 7ms total?
23:43 katsmeow ouch
23:43 rue_shop2 50ms is enough to turn it by hand
23:44 katsmeow no wonder the pricey ones at Mouser are pricey
23:44 rue_shop2 if I could I'd never consider a mechanical encoder
23:45 rue_shop2 ok, if its within 20c of the target it'll only use 1 element
23:45 katsmeow you can make an optical one with an olde mouse wheel
23:45 rue_shop2 its got to be really small for the space left
23:46 katsmeow long shaft to where there's more room
23:46 rue_shop2 mmm
23:46 rue_shop2 kinda
23:48 rue_shop2 :) thanks kat
23:49 katsmeow what did i do?
23:49 rue_shop2 found a datasheet with some numbers that give me a ballpark
23:49 katsmeow cranking up the 18 min version of in a godda da vida?
23:49 katsmeow ah
23:50 rue_shop2 I dont want to put this on the scope!
23:51 rue_shop2 hah code is wrong
23:51 katsmeow i swear i didn't do it
23:52 rue_shop2 I used a variable that wasn't set
23:53 rue_shop2 fixed!
23:53 katsmeow how did that fix noise??
23:54 rue_shop2 didn't
23:54 rue_shop2 I'm working on about 4 different things
23:54 katsmeow o
23:54 rue_shop2 its holding about 50c with its door open
23:54 katsmeow i am playng solitare because i am afraid to do anything
23:56 rue_shop2 my toaster oven controller has a 2x20 character lcd screen
23:56 rue_shop2 what information do you think should be on it?
23:56 rue_shop2 :) helping me is optional
23:56 katsmeow temp, rising/dropping
23:56 katsmeow time?
23:57 katsmeow i mean time at temperature
23:57 katsmeow duration
23:57 katsmeow from close-door
23:57 rue_shop2 I need code to turn 0-65535 seconds into hours:mins:seconds
23:57 rue_shop2 wonder if it should be able to know if the door is open...
23:58 katsmeow a /60 , /60,
23:58 katsmeow door open = heat loss, predictively turn on the heaters
23:59 rue_shop2 heh, its holding 50c pretty good with the door full open
23:59 katsmeow ok
23:59 rue_shop2 its overshooting badly, but thats to be fixed
23:59 rue_shop2 by 5c right now
23:59 katsmeow i'd do it anyhow, else you may have a dip and delay as the cool-down gets to the thermostat