#garfield Logs

Dec 18 2021

07:23 PM Tom_L: .
07:31 PM Tom_L: must be building an index
07:31 PM Tom_L: 68% cpu
07:39 PM Tom_L: now 80%
07:39 PM Tom_L: wonder what's up
07:41 PM rue_mohr: lornez curves eh?
07:41 PM rue_mohr: :)
07:41 PM Tom_L: well it's back
07:41 PM rue_mohr: working
07:42 PM Tom_L: guess it's ass had to catch it's tail
07:42 PM Tom_L: this one goes back to 2011
07:45 PM Tom_L: who was iamturnip?
07:46 PM Tom_L: tobbor was there too :)
07:51 PM aandrew: ok first two layers down, looks good so far. :-)
07:52 PM aandrew: hm 10% infill didn't really do any infill at all on this design
07:52 PM aandrew: so the central piece is mostly hollow
07:52 PM aandrew: https://ibb.co/Mg3zdjj
07:54 PM rue_mohr: its probably fine.
07:56 PM rue_mohr: I mean, boost it if you want :)
07:56 PM rue_mohr: its just cradeling a battery
07:57 PM rue_mohr: that video device you suggested worked without a hickup in windows
07:57 PM rue_mohr: not tried linux, but gonna do a video capture on the tek
07:57 PM rue_mohr: er, gonna try
08:19 PM aandrew: it looks like it'll work just fine
08:19 PM aandrew: the walls on the main body that "straddle" the tabs are kind of thin though, like 3 lines thick (1.2mm)
08:19 PM aandrew: yep I love those cheap mpeg2 encoder dongles
08:27 PM rue_mohr: video capture just totally worked great
08:27 PM rue_mohr: off the scope
08:27 PM rue_mohr: resolution looks fine
08:30 PM Tom_L: :)
08:32 PM rue_mohr: https://twitter.com/RueNahcMohr/status/1472391605852127238
08:32 PM rue_mohr: if it'll show ya without a fight
08:32 PM rue_mohr: just dialing thru stuff on the sig gen, but its video!
08:35 PM Tom_L: nice
08:36 PM rue_mohr: it would be really nice to show how some waveforms change with stuff
08:36 PM rue_mohr: like position sensors
08:37 PM aandrew: next we are going to see the scope video PIP style with rue's fingers twiddling knobs to show how things change as he adjusts
08:37 PM rue_mohr: ooo
08:37 PM rue_mohr: level it up yea
08:37 PM aandrew: it's all downhill from here, trust me. there'll be a youtube channel within a month, and pretty soon he'll be an "influencer"
08:38 PM rue_mohr: I have 2033 followers with a "0" level of influence, it'll never happen
08:42 PM Tom_L: movers n shakers
08:49 PM aandrew: https://ibb.co/jRLn2vM
08:49 PM aandrew: https://ibb.co/XjZVBjW
08:50 PM rue_mohr: was that an hour?
08:51 PM rue_mohr: without wire in the ends, it should seem a bit loose
08:51 PM rue_mohr: have an AA?
08:52 PM rue_mohr: the sides are meant to be tight, they hold it down which holds the ends in which holds the battery down
08:53 PM aandrew: wow this is very nice
08:53 PM aandrew: and yes it was an hour :-)
08:53 PM rue_mohr: yea! I'm glad it worked
08:53 PM aandrew: it worked VERY well
08:53 PM rue_mohr: it holds the battery DAMN good on my prints
08:54 PM rue_mohr: like, without flipping the ends, its not going anywhere
08:54 PM aandrew: what is the idea with teh indented funny shape on the sides opposite the battery terminals
08:54 PM rue_mohr: 8mm rare earth magnet
08:54 PM rue_mohr: extra hold
08:54 PM rue_mohr: with a little pry-out assist
08:55 PM aandrew: ah, does not seem necessary here... so the left/right "slots" are for the wire and the rectangualr at the top is for prying the magnet out?
08:56 PM rue_mohr: left and right are a co-inncidince of wire
08:56 PM aandrew: reverse polarity still closes, but not NEARLY as nicely as the correct orientation. I mean it "feels" like there's something wrong which is perfect
08:56 PM aandrew: this is really something
08:56 PM rue_mohr: the negative cant connect
08:56 PM rue_mohr: the wire sits sub-surface in the positive side
08:56 PM aandrew: I just noticed that
08:57 PM rue_mohr: the tab notches are for an elastic band ;)
08:57 PM aandrew: there are some models which are just elegant. This is that. Amazing model
08:57 PM rue_mohr: if one wanted to
08:57 PM rue_mohr: thanks, I was really happy how it came out
08:57 PM rue_mohr: but I did't get in a wire strain relief
08:58 PM aandrew: the bottom side of the main model is also thick enough to countersink a nice cap screw, and also there is room in the middle to put a temp sensor to use this as the base of a nice battery charging model
08:58 PM rue_mohr: :)
08:59 PM rue_mohr: hmm adding a temp sensor pocket wouldn't be too hard
08:59 PM rue_mohr: the other model I used before I did mine also had slots for zip-ties
08:59 PM rue_mohr: (to mount the holder)
08:59 PM rue_mohr: cool, well thanks
09:00 PM aandrew: the only thing you might want to adjust just a shade is the two end pieces, the bottom left corner of the "L" should be just a bit more curved so the end pieces won't try to lift the body off whatever it's screwed in to
09:00 PM aandrew: this is a really, really nice design
09:00 PM rue_mohr: from what I could see it *just barely* clears the mouting surface, but yea
09:00 PM aandrew: and yes 10% infill is plenty, silly even
09:01 PM rue_mohr: I mostly did it cause the best one I found on thingiverse, I had to fight to get the battery out
09:02 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1220246.jpg
09:02 PM rue_mohr: "I want an eject button"
09:14 PM aandrew: hell that bottom is big enough that I could probably embed a microusb port and a 1S lipoly charger when scaled up
09:15 PM aandrew: it's amost big enough for the little NiMH charger modules I have
09:15 PM aandrew: (in AA form)
09:15 PM rue_mohr: I was wondering at the end if I should slim it down, but the space is needed for meat on the levers
09:16 PM aandrew: no I wouldn't do that, this thing is damn near perfect as-is, and in fact is perfect for probably 99% of applications
09:16 PM aandrew: elegant design. this is a perfect example
09:16 PM rue_mohr: well the other one connects to a battery, this one you can just get the battery back out of
09:17 PM rue_mohr: I originally wanted one button, but couldn't work out how to without making it huge.
09:17 PM aandrew: it takes someone who actually USES the things they design to achieve this. how many things do you run across which are ALMOST useful but either there's no room for screw heads, or it's impossible to actually extract the battery (like your inspiration), or has no way to secure the battery even more (notches for elastic), or has an elegant way to reverse polarity protect...
09:17 PM aandrew: it's all these little things that come together
09:18 PM rue_mohr: except wire strain relief
09:18 PM aandrew: heh, you could probably figure out a pen-like mechanism. push in, push out, with a sliding level to "lock" it so it won't jiggle open
09:27 PM aandrew: well if the wires go "down" to the mounting surface they won't bend that much with the end movements but yeah
09:27 PM rue_mohr: oooo
09:27 PM Tom_L: rue_mohr, you wanted a thing you could market...
09:27 PM rue_mohr: heh
09:27 PM Tom_L: maybe you should reconsider
09:27 PM aandrew: yes, this in AAA, A, 9V and 18650 would be something I could see on Tindie
09:27 PM aandrew: you could also perhaps do some 3V coin cell versions
09:29 PM rue_mohr: heh
09:29 PM aandrew: hm my slicer actually doesn't tell me when it decides to use bridge settings or not, I did set minimum bridge to 0mm though so they should ALL be bridges
09:30 PM aandrew: oh I see it is using bridging
09:30 PM aandrew: very subtle
09:31 PM rue_mohr: if a tweet hits 100 likes, I assume everyone has seen it ;)
09:31 PM aandrew: https://ibb.co/6Ys68w2
09:31 PM aandrew: https://ibb.co/LtCg5HV
09:31 PM aandrew: look at the lines around the holes, first is with "bridge is anything >5mm", second is 0mm
09:32 PM rue_mohr: seems odd
09:33 PM rue_mohr: its not a kind deisgn that way, but its small enough that it usually survives the printing ok
09:40 PM aandrew: printing just the ends with some slicer adjustments (just fooling around)
09:48 PM rue_mohr: :)
10:07 PM aandrew: you can still use zip ties if you keep that area between the two screws a little recessed
10:09 PM rue_mohr: there is lots of room
10:26 PM aandrew: ok second print ended up mostly like the first. rotating 90 and trying again
11:04 PM rue_shop2: oh no, I'v got you on a major distraction
11:04 PM aandrew: ok how in the blue FUCK do you make something so complex ith 30 lines of code and a dxf file
11:04 PM rue_shop2: hahahha
11:05 PM rue_shop2: I'm still trying to reduce a PID servo to 1 transistor
11:06 PM aandrew: I see A0 is the shape of the base, and you're extruding A0 to create the basic block, then likely subtracting out the two ends
11:07 PM aandrew: but I don't see how you are putting the screw holes in nor what the weird shape (A2) is doing
11:07 PM rue_shop2: I made special shapres that are the manual merger of the tabs when their up and rotated
11:07 PM rue_shop2: the screws are rotary extrusions, subtracted from the body
11:07 PM rue_shop2: A2...
11:09 PM rue_shop2: is the cutter for the battery and exit
11:09 PM rue_shop2: because A0 is a side extrusion
11:09 PM rue_shop2: wait, I think I put it in the comments of the scad file?
11:10 PM rue_shop2: I dont usually, but because you said you wanted to make a 18650 version, I put that documentation block in
11:13 PM aandrew: oh so you rotate the shape you made by extruding A0 then cut out a path made by A2 from + to - for example
11:14 PM rue_shop2: yes
11:14 PM rue_shop2: I think its done in the fancy cad programs as "sketch"es
11:15 PM rue_shop2: oh diode logic gonna break my brain