#garfield | Logs for 2016-12-22

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[01:50:22] <Jymmm> rue_house: Wood Fired Hot Tub https://www.youtube.com/watch?v=HMjpWlgcK-M
[02:51:12] <rue_house> we put the hot tub over the fire here and call it a cannibal pot
[09:05:21] <Jymmmm> rue_house: lol, lots of frogs up there huh?
[09:38:47] <rue_house> ?
[09:38:54] <rue_house> lots?
[09:39:03] <rue_house> I think there is a normal amount
[09:39:49] <Jymmm> I meant in respect to frogs in a slowly boiling pot
[09:40:05] <Jymmm> (pun intended)
[09:40:27] <rue_house> oh
[09:41:15] <Jymmm> rue_house: go get another cup of coffee in ya ;)
[09:43:16] <rue_house> mmm tea....
[09:46:04] <Jymmm> Fine... poison of choice, how's that?
[09:47:16] <rue_house> :)
[10:03:36] <rue_house> aaaah no work today, garbage is out, back to bed
[10:04:06] <rue_house> or, code a 32 bit pseudorandom number generator
[10:04:12] <rue_house> hmmm
[10:04:27] <Jymmm> or make a TRNG instead =)
[10:04:34] <rue_house> TRNG?
[10:04:53] <Jymmm> True RNG https://www.fourmilab.ch/hotbits/hardware3.html
[10:04:55] <rue_house> tripple radioactive neutralizer gun?
[10:05:53] <Jymmm> Though, I don't know if they'll ship Cesium-137 across the boarder
[10:07:18] <rue_house> uh, there is a source in a common, everyday smoke detector ya know
[10:07:35] <rue_house> and I'm pretty sure, they have an amp in there to detect hits
[10:08:03] <rue_house> so, I'd 20:1 suggest that a smoke detector could be turned into one
[10:08:21] <rue_house> and you could use an avr with an interval counter to send the results
[10:08:27] <Jymmm> well, maybe a few of them, but yeah.
[10:09:18] <Jymmm> Well, raw yeah, but you still have to deal with entropy
[10:09:59] <rue_house> .... how long does anything last?
[10:10:12] <Jymmm> half life =)
[10:10:30] <rue_house> the reason for using the random number generator will be obsolete long before the source dies out
[10:10:33] <rue_house> half
[10:10:48] <rue_house> as in 2x half life is 1/4 still left
[10:10:49] <Jymmm> Oh I seriously doubt that
[10:11:05] <Jymmm> oh, you mean in respect to half life, or in general?
[10:11:40] <Jymmm> Cause, until quad computing becomes a thing, a RNG will always be valuable. Kinda like a screwdriver.
[10:11:43] <rue_house> I suppose my computers have a half life, I upgrade about 1/3 the parts every 5 years
[10:11:47] <Jymmm> quantum*
[10:12:32] <Jymmm> Computers are the only thing I know that you pay thousands for, and only worth hundreds six months later.
[10:12:32] <rue_house> case is going on 16 years or so now
[10:13:19] <rue_house> hah, I'm using the same dell keyboard as in the article
[10:14:02] <Jymmm> There ya go... you already have one part of the TRNG, you must now build the rest!!!
[10:14:32] <rue_house> na, its a silly implementation
[10:14:46] <Jymmm> I want to build one just so I can have a radiation sticker on it and it REALLY mean something =)
[10:14:56] <rue_house> hah, I think I have some of those dell optiplex machines
[10:14:56] <Jymmm> what's silly?
[10:15:14] <rue_house> using a whole computer to count pulse intervals
[10:15:59] <Jymmm> With today's uC boards, sure.
[10:16:28] <Jymmm> That write was written Sep 2006... 10 years ago, lots have changed since then
[10:17:04] <rue_house> yup
[10:17:36] <rue_house> he could have used an 8051 or 8748, more involved tho
[10:17:44] <rue_house> 8031
[10:17:51] <rue_house> z80 6502
[10:18:03] <rue_house> HC11
[10:18:06] <Jymmm> Or, just grab what the hell ever was on the shelf
[10:18:15] <rue_house> yea..
[10:18:15] <Jymmm> z80?! wt,
[10:18:30] <rue_house> HEY! Z80 ROCKS!
[10:18:55] <Jymmm> You're right.... stone age rocks =)
[10:19:18] <rue_house> best instruction set ever
[10:19:20] <Jymmm> rue_house: Come, step into the future, we have kool-aid!
[10:19:25] <rue_house> search for byte, _1_ instruction
[10:19:48] <rue_house> translation table lookup, _1_ instruction
[10:20:12] <rue_house> transfer block of memory, _1_ instruction
[10:20:17] <Jymmm> I'm still waiting for a BF uC board =)
[10:20:29] <Jymmm> BF being native
[10:20:37] <Jymmm> BF == BrainFuck
[10:20:40] <rue_house> I did that avr one
[10:20:47] <rue_house> did you ever see that?
[10:20:54] <Jymmm> nuh uh
[10:21:12] <rue_house> you load the BF onto the eeprom of the avr, the program in flash runs it
[10:21:23] <Jymmm> nice
[10:22:14] <rue_house> https://hackaday.com/2013/02/27/interpreting-brainfk-on-an-avr/
[10:25:13] <rue_house> http://ruemohr.org/~ircjunk/tutorials/prog/avrbf/main.html
[10:26:07] <rue_house> unfortunatly, the file has to have 0x00 at the start and end, so its got to be preprocessed a little
[10:26:20] <rue_house> which means, yea, I could have packed it
[10:42:35] <Jymmm> nice!
[10:58:43] <Jymmm> Hey, where did you get/find the molex breakout pcb thingy? http://ruemohr.org/~ircjunk/tutorials/prog/avrbf/p1040868.jpg
[11:12:20] <rue_bed> i made them
[11:13:07] <Jymmm> https://www.youtube.com/watch?v=AXVgNw12OoY
[11:13:15] <Jymmm> rue_house: oh man....
[11:14:11] <Jymmm> I made a lil box that breaks out the ATX connector so I can get 3.3V too, but I'm not too pleased with it.
[11:14:58] <Jymmm> Mostly because the wires are to rigid and thick
[11:15:12] <rue_bed> you could use a sata power now
[11:15:43] <Jymmm> Gotta repurpose the 1U PS's I have =)
[11:17:33] <Jymmm> What I really want is a mains/battery powered PS, but I havne't found a multi-18650 cell charger module
[11:19:07] <Jymmm> I've been wanting to build one for years
[11:35:06] <Jymmm> rue_house: I'm using a MAX7219, but I now want to drive 10W LED's, is there anything like a ULN2803 that would allow me to do this?
[12:25:12] <Jymmm> An array of 100A fets in a DIP16 package if you will =]
[12:30:17] <rue_house> 10W, 3.3A?
[12:31:16] <rue_house> did you see that clock I made? they were 3W leds and I had to dial them really low
[12:33:48] <rue_house> http://ruemohr.org/~ircjunk/projects/wallclock/p1070558.jpg
[12:36:26] <rue_house> http://ruemohr.org/~ircjunk/projects/wallclock/slide.htm
[12:43:03] <rue_house> ... is there a point in ones life where they have done everyting?
[12:43:17] <rue_house> if I get there, what do I do, just destroy myself?
[12:44:09] <rue_house> ok I know, I make one of the projects to take a picture of everwhere, everywhen from every angle, that should tie me up for an eternity
[12:45:14] <rue_house> a battery backed up bench supply!?
[12:45:21] <rue_house> oooo.....
[12:45:37] <rue_house> I should work on my bench supply again
[12:46:16] <rue_house> maybe if I just preregulate with switching and use a linear to polish it
[12:46:31] <rue_house> give the linear 2V + dropout
[12:46:47] <rue_house> and just track it with the output
[12:46:53] <rue_house> 5A, 10W or so
[12:46:57] <rue_house> hmm
[12:47:40] <rue_house> breakfast
[15:31:34] <Jymmm> rue_house: Kinda, mre like a power powered PS and can run on line power and recharge the batteries.
[15:31:51] <Jymmm> rue_house: I want to include CV/CV current/voltage meters, etc
[15:33:03] <Jymmm> Would LOVE 40A(H) potential, even on battery but still carry it with one hand
[15:56:47] <Jymmm> rue_house: 10W dimmable led driver http://www.wire2wire.org/10W_led_driver/10W_led_driver.html