#garfield Logs

May 28 2021

12:46 AM rue_mohr: heh or sleeping
02:08 AM rue_bed2: Tom_L, yay log is back
02:08 AM rue_bed2: that said, I wonder what we could get out of it
02:09 AM rue_bed2: I want to extract the ideas
02:09 AM rue_bed2: nlp
02:09 AM rue_bed2: ____ is _____
03:36 AM polprog: we have a bot that reads the channel and builds a markov chain over time
03:36 AM polprog: then when you mention it, it generates one sentence
06:10 AM darkrose: I used to have a bot that remembered everytime someone said something structured as "X is Y", and would respond anytime some asked "what is X?"
06:11 AM darkrose: it would come out with the weirdest answers sometimes, usually when no one was expecting it to answer
08:22 AM rue_bed2: ah, see, we have years of data for it
10:54 AM aandrew: polprog: I've had nothign but bad experiences with HMM based bots
10:55 AM aandrew: possibly just not enough training or a poor training set
10:57 AM polprog: HMM?
10:57 AM aandrew: hidden markov model
11:02 AM darkrose: hey rue want someone knew to talk to? got a ham radio / electronics tinkerer friend
11:10 AM polprog: i got my 21st bday today
11:11 AM polprog: aandrew: https://mouses.xyz/~polprog/ there are some samples of our bot here :D
11:12 AM aandrew: polprog: happy birthday! man you're a young one!
11:12 AM aandrew: holy cow that cone page is cancer to the eyes
11:12 AM polprog: haha
11:12 AM polprog: thanks
12:00 PM Tom_L: https://www.youtube.com/watch?v=F9sXbpwF_yY
06:31 PM rue_mohr: hi
06:31 PM rue_mohr: ooof
07:14 PM Tom_L: ooof ooof yourself
07:33 PM rue_mohr: thats impressive!
07:34 PM rue_mohr: aandrew, do you know what hdmi form this is on the beaglebone black?
07:34 PM rue_mohr: micro?
07:37 PM Tom_L: oh the laser waterjet?
07:37 PM Tom_L: yeah
07:41 PM Tom_L: now instead of your edm you need to make one of those :)
07:49 PM rue_mohr: haha
07:49 PM rue_mohr: but I CAN make the EDM
07:50 PM Tom_L: what do they submerge it in?
07:50 PM rue_mohr: distilled water!
07:50 PM Tom_L: water but with an additive?
07:50 PM Tom_L: ahh ok
07:50 PM Tom_L: non conductive
07:51 PM rue_mohr: we could cut the latches out of aluminum pretty fast
07:51 PM rue_mohr: the guy in the video was using laser software
07:51 PM Tom_L: latch?
07:51 PM Tom_L: which one is that?
07:52 PM rue_mohr: http://www.ruemohr.org/p1190526.jpg
07:52 PM rue_mohr: A12
07:52 PM rue_mohr: you helped with the jig to slot it
07:52 PM Tom_L: oh the little teardrop thing
07:53 PM Tom_L: i used those softjaws for something else i'm sure
07:53 PM Tom_L: or it was on the little crappy sherline vise
07:53 PM Tom_L: are those hard for you to make?
07:53 PM rue_mohr: small part, fits the small vise ok
07:53 PM rue_mohr: not really
07:53 PM rue_mohr: time to cut them out
07:53 PM rue_mohr: I think edm would go faster
07:54 PM rue_mohr: it chews thru alum pretty fast
07:54 PM Tom_L: edm takes alot of power
07:54 PM rue_mohr: ?
07:54 PM rue_mohr: he used 60V ~4A
07:55 PM Tom_L: hmm
07:55 PM rue_mohr: yea
07:55 PM rue_mohr: so
07:55 PM rue_mohr: from the video
07:56 PM rue_mohr: 60V 4A thru a 20 ohm resistor to a 100-160uF capacitor
07:56 PM rue_mohr: discharged by an IGBT at 5khz 10% duty
07:56 PM rue_mohr: in distilled water
07:56 PM Tom_L: you gotta keep flushing the water
07:56 PM * rue_mohr is like 8-| well thats all I need to know
07:57 PM rue_mohr: he just circulated it
07:57 PM Tom_L: what about the contaminates?
07:57 PM rue_mohr: the material removal rate was pretty impressive
07:57 PM rue_mohr: he did a sediment/skimmer
07:57 PM Tom_L: and you'd have to be able to make the 'mold'
07:58 PM rue_mohr: for die cutting sure
07:58 PM rue_mohr: I have a roll of EDM wire
07:58 PM Tom_L: the one i saw had pallet skids full of spent wire beside it
07:59 PM Tom_L: i bet it goes thru wire fast
07:59 PM rue_mohr: yea ti depends what your cutting too
07:59 PM rue_mohr: looks like aluminum cuts super easy
08:00 PM rue_mohr: I wonder what a roll costs
08:00 PM Tom_L: i don't see the trigger in that drawing
08:00 PM Tom_L: A3
08:01 PM Tom_L: must be on the longer model
08:01 PM rue_mohr: ouch
08:01 PM rue_mohr: $150+
08:01 PM rue_mohr: (amazon)
08:01 PM Tom_L: what's it made out of?
08:02 PM rue_mohr: brass I think
08:02 PM Tom_L: the stuff i saw iirc was kinda yellowish in color
08:02 PM rue_mohr: oh no thats molybdenum
08:03 PM rue_mohr: hhaha
08:03 PM rue_mohr: $30 from china
08:03 PM rue_mohr: shipping is....
08:03 PM rue_mohr: $14
08:03 PM rue_mohr: hahahah
08:05 PM rue_mohr: https://www.aliexpress.com/item/1005002353942773.html
08:05 PM rue_mohr: oooo
09:46 PM aandrew: rue_mohr: you mean the HDMI connector on the BBB?
10:42 PM rue_mohr: yea, I think its a micro
11:01 PM aandrew: yep it is
11:29 PM rue_shop1: om
11:29 PM rue_shop1: g
11:29 PM rue_shop1: the performance of the LM555 is almost EXACTLY the same as the IR4427
11:30 PM rue_shop1: hahahahaha
11:30 PM aandrew: hm?
11:30 PM aandrew: ah low side driver
11:57 PM rue_shop1: rue_mohr> https://twitter.com/RueNahcMohr/status/1398495282669572099
11:57 PM rue_shop1: <rue_mohr> https://twitter.com/RueNahcMohr/status/1398495868223848448
11:57 PM rue_shop1: thats just crazy
11:57 PM rue_shop1: mayeb 2x difference
11:57 PM rue_shop1: I can tell ya the latency it totally different from the device inputs, but the driving is sure comparable