#garfield Logs

Feb 12 2022

04:59 AM Tom_L: hi
05:13 AM rue_bed2: hi
08:30 AM Tom_L: 17°F
08:33 AM rue_bed2: was playing with power supplies, going to take a nap to ponder what I learned
08:37 AM Tom_L: that's what you said before
08:37 AM Tom_L: you nap alot :)
12:02 PM rue_mohr: I think I have a working converter for my power supply
12:06 PM Tom_L: cool
12:06 PM rue_mohr: its a new buckboost design
12:07 PM rue_mohr: it took me a while to find parts that would do the switching ok
12:07 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1220888.jpg
12:07 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1220889.jpg
12:07 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1220890.jpg
12:07 PM rue_mohr: it can boost 3V to 3.3
12:07 PM rue_mohr: and buck 5V down to 3.3
12:09 PM Tom_L: not much boost
12:10 PM rue_mohr: well, thats the range I tested it to :)
12:10 PM rue_mohr: it can do more
12:13 PM Tom_L: ya
12:17 PM rue_mohr: someone proded me towards it on twitter
12:17 PM rue_mohr: I was kinda circling a design like it with interest, but didn't realize that if I moved a diode it would be what I wanted
12:17 PM rue_mohr: but there was an itch!
08:51 PM Tom_L: dammit!
08:52 PM Tom_L: stuck on a circular array
08:52 PM Tom_L: can't get the icon enabled no matter what i try
09:37 PM rue_mohr: hmm
09:39 PM Tom_L: https://grabcad.com/tutorials/catia-v5-polygon-udf
09:39 PM Tom_L: Step 17
09:42 PM rue_mohr: it wont let you bring up the dialog for it?
09:42 PM Tom_L: nope it's greyed out
09:43 PM rue_mohr: you need to select some lines first?
09:43 PM Tom_L: tried
09:43 PM rue_mohr: does it light up if you hit ctrl-a?
09:43 PM Tom_L: no
09:46 PM Tom_L: i'm stuck
09:47 PM rue_mohr: I bet they missed soemthing
09:47 PM Tom_L: i've been able to work thru all the rest of it
09:47 PM Tom_L: triple checked it all
09:47 PM Tom_L: up to that point
09:47 PM rue_mohr: yup
09:47 PM rue_mohr: I wonder what the requirements are for it to enable
09:48 PM Tom_L: a solid
09:49 PM Tom_L: i'm about to give up on it
10:04 PM rue_mohr: I cant help :/
10:05 PM rue_mohr: but hey, if you want a switching power supply thats 22% efficient, just ask!
10:13 PM Tom_L: it's like doing a linux update and getting stuck in dependency hell
10:14 PM rue_mohr: try another tut and do that one again another day?
10:15 PM Tom_L: if i stop i won't return
10:15 PM rue_mohr: there might be soemthing that just works if you try later