#garfield Logs

Dec 15 2020

12:27 PM rue_mohr: ok, 91%
12:33 PM rue_mohr: I'm just gonna rock back and forth in my chair for a while and try to put my mind back togethor
12:37 PM rue_mohr: according to my poll, 20% of my twitter followers are potatoes
12:37 PM rue_mohr: I'm surprised
12:37 PM rue_mohr: I thought it was higher
12:52 PM rue_mohr: polprog, I always end up taking the holders off the ends of those optic cables
12:52 PM polprog: hmm
12:52 PM polprog: maybe ill do so
12:52 PM rue_mohr: UPC?... why dont I know that one
12:52 PM polprog: Ultra profile something
12:52 PM polprog: or uhh
12:52 PM rue_mohr: nope, really dont know that one
12:53 PM polprog: ultra physical contact
12:53 PM rue_mohr: nope
12:55 PM rue_mohr: I dont see any 2N7000 based crystal oscillators
12:56 PM polprog: 2n7000 is nmos right?
12:56 PM rue_mohr: yup
12:56 PM polprog: hmmm
12:56 PM rue_mohr: I suspect the bias isn't ideal for it
12:56 PM polprog: gotta watch mech lectures
12:57 PM polprog: should be doable
12:57 PM polprog: argh they are watching movies now. i guess im not doing the kitchen shelf today
12:57 PM rue_mohr: the goal is a 5V rail-rail 8Mhz oscillator, as cheap as possible, a 74--04 is ~10c ea
12:57 PM rue_mohr: oh but the crystals are about 10c to, so I'm targeting LC
01:28 PM Tom_L: potatoe or a vegtable?
01:29 PM Tom_L: out cutting a few more softjaws for the vise
01:31 PM Tom_L: 3/16 bit full width .050 per pass @ 12 ipm
01:31 PM Tom_L: testing what the new spindle motor will do
01:32 PM Tom_L: didn't phase it a bit
01:32 PM Tom_L: .500 alum plate
01:33 PM Tom_L: hardly warm to the touch
01:39 PM rue_mohr: :)
01:42 PM Tom_L: manual with just air, no coolant
01:43 PM Tom_L: quicker than sawing the rough blocks
01:45 PM Tom_L: i was afraid a 1/8" bit would have snapped
01:54 PM rue_mohr: china ran out of antistatic bags
01:57 PM aandrew: they always shipped in white syrofoam for me. :-)
01:59 PM rue_mohr: the 4M ram chips I got were ugly pulls, I suspect they will work ok tho
02:04 PM Tom_L: i got a bunch of those leftover
02:06 PM rue_mohr: ?
02:06 PM rue_mohr: 4M 8 bit ram chips?
02:06 PM rue_mohr: parallel?
02:06 PM Tom_L: bags
02:06 PM Tom_L: static bags
02:06 PM rue_mohr: ah
02:06 PM rue_mohr: send 'em to china!
02:06 PM Tom_L: heh
02:07 PM Tom_L: the ones you got your programmer in
02:07 PM rue_mohr: I used to get about 75% of the stuff in antistatic bags
02:07 PM rue_mohr: latley, nothing has been
02:07 PM aandrew: I got a whole whack (maybe 200-300) nice bags from somewhere. I never bought 'em but these haven't been used
02:42 PM rue_mohr: how long till microsoft buys adobe
02:42 PM rue_mohr: or is the whole reason for the suppression of their software cause they wont sell?
02:45 PM Tom_L: adobe has gone to crap
02:46 PM rue_mohr: I'm not sure if they were forced there tho
06:32 PM rue_mohr: yay! the NE5532 are properly packaged!!!
06:36 PM Tom_L: heh
06:36 PM rue_mohr: XF Electronical components co.,ltd Store
07:01 PM rue_mohr: "Nickel-cadmium cells
07:01 PM rue_mohr: are not damaged as a result of cell reversal, so no provisions are required for bypassing weak cells. Reversing the polarity of
07:01 PM rue_mohr: NiCad cells should not be a basis for terminating a discharge test before the over all terminal voltage is reached."
07:01 PM rue_mohr: !!!
07:02 PM rue_mohr: For example, a 95 cell battery is being tested to a minimum terminal voltage of 105 Vdc (1.10
07:02 PM rue_mohr: Vpc). During the discharge, two weak cells go into reversal and stabilize at –0.30 Volts. The new minimum terminal voltage is
07:02 PM rue_mohr: 93 cells × 1.10 Vpc – (2 × 0.3) = 101.7 Vdc.
07:23 PM aandrew: that blob opera thing is awesome
07:24 PM aandrew: I spent 10 minutes playing with it then just had it sing carols
07:43 PM Tom_L: ok blocks are all squared up
07:44 PM Tom_L: had to do that so i could center the holes in the next program
07:45 PM Tom_L: you never know what size scrap you're gonna find at the yard
07:49 PM durp is now known as MrTime
07:55 PM Tom_L: https://www.youtube.com/watch?v=Ga9n4Laub1Q&feature=youtu.be
08:00 PM rue_mohr: ? what cha up to there?
08:06 PM Tom_L: cutting softjaws
08:07 PM Tom_L: i didn't wanna run the coolant so i just sucked up the bits
08:08 PM Tom_L: just parting off the material there
08:08 PM Tom_L: easier than using a saw
08:08 PM rue_mohr: ah
08:09 PM Tom_L: was doing it manually but decided to write a program to do it
08:09 PM MrTime: sounds cool
08:27 PM aandrew: huh, that wasn't terrible. 5 sheets of plywood, 8 2x4s, a sheet of drywall and a bunch of other small misc stuff, $60 delivery and will be here tomorrow
08:27 PM aandrew: could definitely get the material for cheaper but would have to dick around and rent a pickup
08:35 PM rue_mohr: what you building agian?
09:13 PM aandrew: nothing in particular
09:13 PM aandrew: needed sanded 4x8 sheets of plywood for the underlay of a tap dance floor
09:13 PM aandrew: since that was gonna cost me $60 delivery I said fuck it, may as well pick up a bunch of 2x4s, some cheap plywood, etc, etc.
09:15 PM aandrew: the cheap plywood and drywall are to build 3 walls around the mill as a noise barrier, and the framing material and some of the plywood will be to frame an area at the bottom of the stairs in the garage (going to the basement) where I want to set up a small grow op
09:15 PM aandrew: got the mylar sheets, grow lights and such from ali a while ago
09:16 PM aandrew: figure I am already spending the money to get stuff delivered, may as well make it worthwhile, although cutting the 4x8 sheets will be a pain since I only have a skill saw
09:16 PM aandrew: maybe next year I'll get a table saw when canadian tire goes on sale again
09:17 PM aandrew: very happy with the sliding miter saw I got 50% off, I bought an aluminum cutting blade for it so I can use it as a cheap chop saw too when I eventually get to that
09:19 PM aandrew: I just discovered instacart... nice idea, but they seem to have jacked up *all* prices for things I can get from the stores directly by $1.40 (not a percentage, seems to be $1.40 higher everywhere) which is obnoxious since they're also charging a delivery fee
09:20 PM aandrew: it may just be worth the price to not have to actually step foot IN a costco though
09:26 PM rue_shop1: "who wants to be a millionare?"
09:26 PM aandrew: hm?
10:10 PM rue_shop1: i have to look up a song
10:24 PM rue_shop1: ... whats the intneral vref of the adc on an avr?
10:24 PM rue_shop1: 2.55?
10:25 PM Tom_L: 1.1
10:25 PM Tom_L: is one of them
10:25 PM rue_shop1: ok
10:25 PM rue_shop1: hmm
10:25 PM rue_shop1: thats actually too small
10:25 PM Tom_L: depends what chip too i think
10:26 PM rue_shop1: I got a 1.4V signal
10:26 PM rue_shop1: I got the t13 sheet up just as you called it
10:26 PM rue_shop1: for the t13, yes 1.1
10:26 PM rue_shop1: but if I was uisng the tiny26 I could use an external vref