#garfield Logs

Apr 02 2023

12:48 AM rue_mohr: https://twitter.com/RueNahcMohr/status/1642392578325909507
02:46 AM rue_mohr: https://github.com/ruenahcmohr/DirectSerial595
02:44 PM polprog: hmm, that is pretty complicated
02:45 PM polprog: id have approached it somewhat different.. transmitting 3 different frequencies
02:45 PM polprog: 01010101 or 10101010 - first f
02:45 PM polprog: 00110011 11001100 etc; second f
02:46 PM polprog: 00001111 or 11110000 - third F
02:46 PM polprog: and then use a set of filters to route a hi logic state to the three different pins, data, latch and clock
03:36 PM rue_shop4: the issue is getting around the start and stop bits
03:37 PM rue_shop4: its not 8 bits, its 10, with two fixed
03:37 PM rue_shop4: :]
03:37 PM rue_shop4: I'm just working out another one
03:41 PM aandrew: you could have something that looks for the start bit (low) and fires a one-shot that enables the shift reg for the next 8; the thing that looks for the start bit would "reset" every 12 bit times or so and you could have an inter-char delay of a byte time
03:42 PM aandrew: or maybe "easier" - send a break then data, then break, then data... the low pulse detector would be fairly easy to build but you still need to strip off the start/stop bits of the data or have a shift reg wide enough to accept 10 bits
03:44 PM rue_shop4: but your not gonna pull it off in 6 passives :]
03:44 PM rue_shop4: and I'm going for no uart control
03:44 PM rue_shop4: you just send the data
03:45 PM rue_shop4: so you do not need to worry about what serial hardware you have or now to control it
03:45 PM rue_shop4: just send the data
03:45 PM rue_shop4: AVR, PC, 1 bit computer, or iphone
03:52 PM rue_shop4: ooo I'm getting good at designing these
03:53 PM rue_shop4: aandrew, besides, remember on twitter? I already did that with two 555's , full serial decoding to a 595
03:56 PM aandrew: no, you're right, I sure as hell won't do it in 6 passives
03:57 PM aandrew: oh I haven't been paying much attention to twitter
03:57 PM aandrew: I should, you're the only twitter celebrity I know
03:57 PM rue_mohr: hahah celebrity?
03:58 PM rue_mohr: its funny, for all those followers, not many people make comments or ask questions
04:00 PM rue_shop4: its all goofy tech stuff that almost nobody understands and I dont get who so many people are interested
04:29 PM aandrew: I just spent the afternoon downloading the llama checkpoint data/data models ... 220GB. no idea if I'll use it for anything, but I got a wild hair up my ass about whether I could point an LLM at my huge pdf book library and ask it questions so it could find stuff from my library for me
04:29 PM aandrew: the caveat to all this of course is that it must be *offline* -- I don't want to use the cloud for any of this
04:29 PM aandrew: being slow is okay(ish), but having to connect to the cloud to do the work is not
04:30 PM rue_shop4: :]
04:31 PM aandrew: interestingly, there is a "port" of llama which is CPU-only (no GPU): https://github.com/markasoftware/llama-cpu
04:31 PM aandrew: "On a Ryzen 7900X, the 7B model is able to infer several words per second, quite a lot better than you'd expect!"
04:31 PM aandrew: the smallest dataset still needs about 32GB of RAM though
04:32 PM aandrew: but I'm still ultranewb at this (even worse than ultranewb, I am maybe not even a newb I'm so unfamiliar with it. Maybe proto-newb)
04:33 PM aandrew: it's jus another distraction I *don't* need, but "need" was never ever something that played into my distractions, sadly
05:54 PM rue_mohr: its interesting how, in a burst of tweets about almost the same material, one tweet will get a lot more attention
06:07 PM rue_mohr: hah cool the sensorless brushed motor positioning project has 11 stars!!
08:24 PM rue_mohr: got the rest of the sprayers fixed up
09:00 PM Tom_L: bend fit ok?
09:00 PM rue_mohr: yup, it all worked
09:00 PM rue_mohr: strange other issues
09:01 PM rue_mohr: the slot in the 3d print for the 3mm are out, their too tight
09:01 PM rue_mohr: same with the 1/4" slot in them, I have to file it out