#garfield Logs

Mar 09 2024

12:20 AM rue_mohr: oh joy, the root drive on the router is failing
12:32 AM rue_mohr: better get that copied...
12:32 AM rue_mohr: tommorow
01:39 PM aandrew: https://assets.nexperia.com/documents/data-sheet/HEF40244B.pdf
01:40 PM aandrew: am I reading this correctly? with VDD=15V, Vih is minimum 11V?
01:51 PM rue_mohr: VI input voltage −0.5 VDD + 0.5 V
01:52 PM rue_mohr: the line your looking at is the minumum before it regards it as a high
01:55 PM aandrew: yes exactly
01:56 PM aandrew: it needs to see a minimum of 11V to register a high when running off of 15V
01:58 PM aandrew: I'm looking for a 74ls125/126 type device to use as a buffer/protector of my MCU output but which can handle up to 12V
01:58 PM aandrew: I could use a little mosfet gate driver but they usually only come in singles where I need 8
01:58 PM aandrew: I could use something like those ULN200x but that's OC only
02:08 PM aandrew: I could use something like https://www.diodes.com/assets/Datasheets/DGD05473.pdf and just connect Vb to VCC and Vs to ground, that gets me two up-to-14V push-pull drivers for $0.81
02:08 PM aandrew: so under $5 for 8
02:59 PM aandrew: nah. I'm overthinking
03:00 PM aandrew: just gonna use a 244 @ 5V to make sure the 3.3V outputs of the MCU will be strong enough, and then use a ULN2003
04:55 PM rue_mohr: hu?
05:12 PM rue_mohr: http://ruemohr.org/~ircjunk/software/armcapture.hex
05:34 PM rue_shop2: WormFood, so, you gonna send me a .wav and see if I can decode it right?
06:11 PM rue_mohr: ᓚᘏᗢ
06:49 PM aandrew: well isn't that a fancy unicode
06:49 PM aandrew: looks like a cat
07:09 PM rue_mohr: so it DOES! ;]
10:45 PM rue_mohr: https://youtu.be/_a7usMe_K38?t=1237
10:54 PM rifraf: neat, have the start of injection moulder here, maybe next year
10:54 PM rue_mohr: I tried and failed
10:56 PM rifraf: got a proper screw here, thats 1/2 the battle
10:57 PM rifraf: about 2 foot long and 1 1/4" diameter
11:02 PM rue_mohr: hmm
11:03 PM Tom_L: at least the mold looked similar
11:13 PM rue_mohr: :) yup!