#robotics Logs

Jul 23 2018

12:03 AM rue_: I dont even recall why I needed 10Mhz
12:07 AM rue_: I recall the 1Mhz was so horrid I had to sharpen it up
12:07 AM rue_: I think the 10Mhz was a random improvement on what I had
12:07 AM rue_: and now its just been a challange that has taught me a lot
12:07 AM rue_: the device itself will just be like the T-shirt you get after
12:07 AM rue_: "... and all I got was this lousy shirt"
12:08 AM rue_: hmm, how much spagetti sauce does a person need to add to supper before it constitutes the daily vegitable quota?
12:08 AM rue_: wow my typing is getting worse
12:08 AM rue_: I'm gonna wear out my backspace button
12:12 AM rue_: http://ruemohr.org/~ircjunk/projects/siggen/p1100342.jpg
12:13 AM rue_: oh yea, so, those are my current signal generators
12:14 AM rue_: as a side track I wonder what ebay has
12:20 AM rue_shop4: https://www.ebay.ca/itm/FY6600-60MHz-Dual-Channel-DDS-Function-Signal-Generator-Waveform-20Vpp-In-CANADA/302532332556?hash=item4670550c0c%3Ag%3AZXAAAOSwfVhaDr2d&_sacat=0&_nkw=signal+generator&_from=R40&rt=nc&_trksid=p2380057.m570.l1313.TR11.TRC2.A0.H0.Xsignal+generator.TRS1
12:20 AM rue_shop4: ugh
12:21 AM rue_shop4: anyhow, check it out, sine wave to 60Mhz, square wave to 25M, and 10M for shaped waves downward
12:21 AM rue_shop4: that makes sense
12:23 AM rue_shop4: interesting looking at the limits
12:24 AM rue_shop4: looks like I'm shooting pretty close to the best out there
12:24 AM rue_shop4: I just need to add a 6 sample/cycle wave shaper
12:24 AM rue_shop4: for low freq shapes
12:25 AM rue_shop4: less than 5% overshoot on a square wave....
12:27 AM rue_shop4: https://www.ebay.ca/itm/Agilent-83622B-Swept-Signal-Generator-2-20GHz/163156031530
12:28 AM * rue_shop4 drools
12:32 AM rue_shop4: https://www.ebay.ca/itm/Instek-FG-8015G-Function-Generator-120V-50-60Hz-Brand-New-In-the-Box/153080408657
12:32 AM rue_shop4: interseting, the range goes from 0.2 to 2
12:32 AM rue_shop4: I wonder why they did that
12:38 AM rue_shop4: www.gwinstek.cn/en/download/downloadfilelist.aspx?id=106
12:39 AM rue_shop4: uh, they wont accept any of the browsers I use, anyone want to see if there's a pdf for the FG-8015 on there?
12:40 AM rue_shop4: aha, found one, thanks
12:46 AM rue_shop4: interseting, it works like the HP one
12:49 AM rue_shop4: wtf, one of the main amps only has a 320khz bandwidth!?
12:50 AM rue_shop4: whaaat, thats their output amp
12:53 AM * rue_shop4 thinks
12:55 AM rue_shop4: https://www.ebay.ca/itm/Leader-LSG-245-Stereo-AM-Signal-generator-very-rare/253761183819
12:55 AM rue_shop4: hah, my counter is a leader
12:56 AM rue_shop4: hmm, I like that, but for all the modulation stuff
01:01 AM rue_shop3: regarding accuracy, I was thinking that an on-device 3 digit display would suffice
01:07 AM rue_shop4: aha I thought I had soemthing, IR4427
01:07 AM rue_shop4: I give in, I like the look of the 80's stuff best
01:07 AM rue_shop4: arg
01:08 AM rue_shop4: hmm, 10 and 15ns
01:09 AM rue_shop4: thats .01us
01:16 AM rue_shop4: ok,the tda2050 I first used for motor driving was oscillating at 30Mhz, but a good one now wont respond at all to 1Mhz, so ok
01:32 AM rue_shop4: ok, call it what you want, but the IR4427 is NOT a high speed fet driver
01:32 AM rue_shop4: ok, so
01:32 AM * rue_shop4 opens his book of personal schematics and turns to "high speed fet drivers"
01:40 AM rue_shop3: oh, thats funny
01:41 AM rue_shop3: halarious even
01:41 AM rue_shop3: the latest fet driver I designed, the really fast one?
01:41 AM rue_shop3: ITS what triggered this
01:41 AM rue_shop3: I had to put a 555 on the 1Mhz of the signal gen to test the fet driver
01:42 AM rue_shop3: according to this, the rise time to 12V is 100ns, BUT, its class A, and the fall time is 20ns
02:40 AM rue_bed: if pn2222 are 300Mhz, there must be a way
02:40 AM rue_bed: I wonder how the panel should work on it
02:40 AM rue_bed: I have buttons with leds, for range anyhow
02:40 AM rue_bed: hmm
02:49 AM mrdata: 300MHz is the gain bandwidth?
02:50 AM mrdata: (product)
03:05 AM Jak_o_Shadows: Tom_L, I've been thining of getting a manual set of 6" calipers, the chinese digital ones I have chew batteries
03:05 AM Jak_o_Shadows: Of course, I can probably afford a nice set, but I don't use them that much
03:15 AM Jak_o_Shadows: Also, my 3d printer belt has come, so I can work on the leg
06:14 AM SpeedEvil: There are also nicer calipers that don't chew batteries.
06:17 AM Jak_o_Shadows: Yeah. I mostly measure things for 3d printing, so I don't really need anything more than 0.5mm
12:48 PM rue_shop4: okok, NO signal generator for the next 5 days
01:22 PM z64555: more like 5 hours
01:22 PM z64555: :P
01:52 PM rue_: no really, I need to et other thigns done
05:03 PM rue_shop3: ok, I got the tub valve fixed, this was a big thing on my list
05:03 PM rue_shop3: and I didn't have to get any parts
05:04 PM rue_shop3: I need tea milk tho
07:14 PM rue_shop4: ok got milk, and page dividers
07:15 PM rue_shop3: cool!! TEAAAA!
08:12 PM rue_shop3: ok I made a bunch of binder dividers
08:12 PM rue_shop3: should be enough for a while
10:00 PM rue_shop4: ok, I did the layout for the solar panels on the house roof
10:12 PM zhanx: solar in Canada?
10:15 PM rue_shop3: yea
10:15 PM rue_shop3: ok, two holes were a miss the first time, rest seem ok
10:16 PM rue_shop3: but I have to wait till its hot to tuck the peices in, so I'll do that tommroow
10:16 PM rue_shop3: gonna put 1kw on
10:22 PM zhanx: how is your snow load there?
10:36 PM rue_shop3: low
10:55 PM rue_shop3: hmm, are 4N35 worth keeping, .... I have a LOT of PCF817
11:03 PM zhanx: maybe?
11:04 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Inline_spacer.jpg
11:04 PM Tom_L: lathe part or mill part?
11:05 PM zhanx: i would guess lathe but knowing you milled
11:05 PM rue_shop4: I'm confused
11:05 PM Tom_L: it was easier than making them on the conventional lathe
11:05 PM rue_shop4: do you mean what did you make it on, or whats it for
11:05 PM Tom_L: make it on
11:06 PM rue_shop4: oh well , its under cnc folder
11:06 PM rue_shop4: :)
11:06 PM rue_shop4: did you have to flip it?
11:06 PM zhanx: rue i would keep the chips in case you need them
11:12 PM Tom_L: yes i flipped it but i made multiple at once
11:13 PM Tom_L: used some soft jaws
11:20 PM rue_: hmm
11:21 PM rue_: too late, but I have 54 more of those boards
11:21 PM rue_: Runs On Batteries and Obsolete Technology
11:22 PM rue_shop3: ok I washed out the bin I want to store the wire in
11:22 PM rue_shop3: hopefully the cats wont spray on the wire waiting to go in it
11:24 PM rue_shop3: ok I need to write software
11:27 PM rue_shop3: I need an mp3 player board and an avr
11:28 PM zhanx: wait why?
11:30 PM rue_shop3: I have a bunch of thsese serial controlled mp3 players
11:30 PM rue_shop3: for my robots
11:30 PM rue_shop3: I can make them talk :)
11:30 PM Tom_L: what would we get done if we all lived on the same block?
11:30 PM zhanx: oh great canned responses
11:30 PM rue_shop3: we would take over the world
11:30 PM rue_shop3: there would be nothing else left to fill the bordom
11:31 PM zhanx: now i need to code extra to stop your bots
11:31 PM rue_shop3: hah, yes, your right "byte my shiny metal ass" "meat bag"
11:31 PM zhanx: still working on my clock system for fired rounds
11:31 PM rue_shop3: :)
11:32 PM Tom_L: putting a rail gun on your mech?
11:32 PM zhanx: gonna make elf 2.0 this winter
11:32 PM rue_shop3: zhanx, maybe you could make a targeting system for a laser moquito killer?
11:32 PM zhanx: we wish
11:32 PM rue_shop3: zhanx, see what a 3d printer does for you?
11:32 PM zhanx: yep
11:32 PM zhanx: and again i love it
11:32 PM rue_shop3: again?
11:33 PM rue_shop3: oh since you made it
11:33 PM zhanx: its idle till thursday
11:33 PM rue_shop3: so, dude, take a pic and I can suggest custom parts eh?
11:33 PM zhanx: yes sir remind me tomorrow first thing
11:34 PM zhanx: I am printing the ramps holder tomorrow
11:34 PM rue_shop3: first thing for me here will be about 11am
11:34 PM rue_shop3: makes it about 13am for you
11:35 PM zhanx: working early tomorrow till late. lots of wiring crap and a deinstall
11:35 PM rue_shop3: oh right, I'm on vaccation
11:35 PM rue_shop3: wait, I will remind you before I go to sleep
11:35 PM zhanx: then wed more wiring and and a lone star steak house upgrade
11:35 PM rue_shop3: that will prolly be your early morning
11:36 PM zhanx: thursday is the local market coupon printer upgrade, ugh
11:36 PM zhanx: least they ran cat 5 for the printer first
11:40 PM rue_shop3: your sure it wasn't 3 pair cat3?
11:40 PM rue_shop3: same stuff, right?
11:41 PM zhanx: same stuff yes but no that
11:42 PM zhanx: not that
11:42 PM zhanx: reading the list of crapola they sent me
11:43 PM zhanx: the server is a Nex OS ????
11:43 PM rue_shop3: haha, they ran RG6 instead of CAT6
11:43 PM zhanx: I need to google that
11:45 PM rue_shop3: hahaha
11:46 PM rue_shop3: "
11:46 PM rue_shop3: Step6: Power off
11:46 PM rue_shop3: Unplug USB cable.
11:46 PM rue_shop3: "
11:46 PM zhanx: wait that is not even a main stream OS
11:46 PM zhanx: its an MIT project thing
11:47 PM zhanx: who rolls that out live for the real world
11:47 PM rue_shop3: dude
11:48 PM rue_shop3: when you go to university, the only two ways you can make money are:
11:48 PM rue_shop3: a) get employed by the university
11:48 PM rue_shop3: b) steal some of the tech from the university and use it to make money
11:48 PM rue_shop3: they obviously chose B
11:48 PM zhanx: i guess so
11:48 PM Tom_L: i work for the book keeper of the lone star :D
11:49 PM Tom_L: or i've done work for
11:49 PM rue_shop3: lone star
11:49 PM rue_shop3: ?
11:49 PM Tom_L: z know what it is
11:49 PM Tom_L: steak house
11:49 PM zhanx: its a texas beer company and a steak house
11:50 PM zhanx: Tom_L, i am running new Kitchen display wiring
11:50 PM zhanx: which is bad
11:50 PM Tom_L: i've never met the owner but i've done work for him too
11:50 PM Tom_L: at his home
11:50 PM zhanx: its touch screen in a steak house
11:50 PM Tom_L: unless it changed hands
11:50 PM Tom_L: chain owner
11:50 PM zhanx: no clue my contract is through IBM for this
11:51 PM Tom_L: i can't even remember his name now
11:51 PM Tom_L: ahh, coulter
11:51 PM Tom_L: jamie
11:52 PM rue_shop3: ok and I need speakers
11:52 PM Tom_L: piezo
11:52 PM Tom_L: squeak it out
11:53 PM Tom_L: ok, minor tweaks to the program done. bedtime
11:54 PM Tom_L: huh, i could add the engraving tool and use it as a chamfer / debur
11:54 PM Tom_L: i need a vibra-tumbler now
11:55 PM Tom_L: ok, conquer the world whilst i sleep. gnite
11:58 PM rue_shop4: lets build a vibra-tumbler!
11:58 PM rue_shop4: I'll help if you dont hog the whole project like z did his printer
11:58 PM Tom_L: i think if i did, it would be more like a round rock tumbler that turned the barrel
11:59 PM rue_shop3: oh, I already have one of those
11:59 PM rue_shop3: isn't it supposed to be a tray a few inches deep?
11:59 PM Tom_L: i used to
11:59 PM Tom_L: a vibra-tumbler?
11:59 PM rue_shop3: yea