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Mido posted:
I was about to chastise you for it not being literally triple that
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May 10, 2015 14:44
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Mido posted:edit: yes $60/hr is really really low  srsly, 3x that i've got this thing compiled, built, linked, w/e, it's up and running and failing trying to load the checkpoint data. it smells like a size/alingnment/endianness thing, have to comb through the symbols & changes to see what I broke
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May 10, 2015 17:28
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Mido posted:
dude wtf r u doin
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May 10, 2015 18:47
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looks like my name is on someone's short list for good emb-c devs
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last time I charged $60 for sidework was while I was in college, and that wasn't even embedded poo poo
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May 10, 2015 19:08
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Mr Dog posted:dude wtf r u doin writing like 5 functions that the non low level dude can call it's like 100-200 lines at most and most of the unknowns and time sink will just be loving with Keil tools and maybe pokin a trace with a probe when the adc doesn't react as anticipated I'm p bad at gauging how much my time is worth but my fear here is all the unknowns, don't wanna bill $300hr on something that doesn't pan out or maybe I don't end up with enough spare time to weekend warrior it etc
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May 10, 2015 19:15
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Mido posted:writing like 5 functions that the non low level dude can call at least go for $150
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May 10, 2015 19:18
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ChiralCondensate posted:at least go for $150 ok will do
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May 10, 2015 19:36
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Mido posted:I'm p bad at gauging how much my time is worth you don't say. if those five functions are so easy to write that some other dude over there can knock em out with 30 minutes of googling then let them do just that if hey actually those functions require some experience to develop then they can pay you what your time is actually worth to do them otherwise you just look desperate and you're going to get walked over. remember that your contracting rate per hour, all else being equal, should be (at least) 2x your expected salary after conversion into an hourly rate because you have no job security or benefits while contracting.
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May 10, 2015 19:45
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fwiw i too am awful at negotiating and knowing what my time is worth etc but i do know at least that $60/hr for freelance embedded dev work is so low as to not get you taken seriously.
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May 10, 2015 19:46
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Mr Dog posted:fwiw i too am awful at negotiating and knowing what my time is worth etc but i do know at least that $60/hr for freelance embedded dev work is so low as to not get you taken seriously.  subconsciously I think I knew 60 was low enough and needed yosposters to make fun of methanks team
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May 10, 2015 19:51
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May 10, 2015 19:59
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this is a bit distant from this thread's usual discussion topic of boring stuff like microcontrollers and other tiny computer, but does anyone know if there are any good books on pulsed power circuit design? I have this 6x225 uf 1.5kv laser capacitor (6 caps in one case, sharing a common ground terminal) and I need to figure out how to build the rest of a pulse forming network. Also I need to figure out a way to keep the crusher coil I'll be connecting it to from ringing, since the capacitor's only rated for 20% voltage reversal
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May 10, 2015 20:31
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atomicthumbs posted:this is a bit distant from this thread's usual discussion topic of boring stuff like microcontrollers and other tiny computer, but does anyone know if there are any good books on pulsed power circuit design? how's noise bridge??
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May 10, 2015 20:37
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Mido posted:how's noise bridge?? i ain't goin' there to let someone poo poo on my capacitor
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May 10, 2015 21:50
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atomicthumbs posted:this is a bit distant from this thread's usual discussion topic of boring stuff like microcontrollers and other tiny computer, but does anyone know if there are any good books on pulsed power circuit design? don't know where besides the gray forums he frequents, but three phase might have some ideas
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May 11, 2015 01:52
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I have a sick af power book at work but I think it's mostly switching supplies and may be irrelevant for hv poo poo
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May 12, 2015 06:02
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Bloody posted:I have a sick af power book at work but I think it's mostly switching supplies and may be irrelevant for hv poo poo it is power electronics by Hart. im not sure if its actually good i havent used it in a while but the class that used it was real good. lookin at the toc it is probably irrelevant to youre work tho.
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May 12, 2015 19:25
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just got off the phone with the startup that needs emb-c work i put my dick on the table at $150/hr and a dead silence dropped  i stuck to my guns thoughit sounds like they want to put 2-3 hours down for a research spike so i can look at the tools and maybe just give their main programmer guy a jumpstart on the magical world of embedded C
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May 13, 2015 04:31
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lol 'cause digging their lead programmer out of a hole so their company goes from "nobody here knows what to do" to "we can now build our product" is only worth a couple hundo
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May 13, 2015 04:33
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Raluek posted:lol 'cause digging their lead programmer out of a hole so their company goes from "nobody here knows what to do" to "we can now build our product" is only worth a couple hundo this is sounding familiar
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May 13, 2015 04:34
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I want to consult
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May 13, 2015 04:34
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by which I mean make 3x more
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May 13, 2015 04:35
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what they really wanted was a magical enthusiastic team friend to join up and get paid for ~passion~
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May 13, 2015 04:40
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Bloody posted:it is power electronics by Hart. im not sure if its actually good i havent used it in a while but the class that used it was real good. lookin at the toc it is probably irrelevant to youre work tho. I asked in the industrial electricity A/T thread and a former General Atomics capacitor sales engineer showed up 
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May 13, 2015 06:11
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the beagle bone is pretty cool if you use the PRU. you have to pay texas instruments multiple earth dollars if you want to program it in anything more advanced than assembly, tho. beefy next gen beagle board comes with dsps too, but it's not out yet
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May 13, 2015 07:06
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Mathhole posted:the beagle bone is pretty cool if you use the PRU. you have to pay texas instruments multiple earth dollars if you want to program it in anything more advanced than assembly, tho. theres actually an open source C(++) tool chain for all that. you have to pay TI if you want to use their closed source toolchain with code composer studio. I've compiled plenty of stuff for ti OMAPs and Sitara processors without paying TI a cent i'm working with this board right now, its basically a beagle bone black (thats the one with a am3359 right) with all the IO routed to actual connectors which is quite handy for industrial type stuff
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May 13, 2015 14:56
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lol "bettery holder"
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May 13, 2015 16:17
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engrish schematics best schematics broken encoding so you can't search too
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May 13, 2015 18:45
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http://www.ftdichip.com/Products/ICs/FT600.html hail satan
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May 15, 2015 16:19
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 i decided to tell those guys that i'm just too busy to take on a low level C project but can field some basic no guarantees questions in the future if they needtruthfully they are just super weird and don't have their poo poo together and I don't wanna deal with another startup where some dudes without real funding or planning skills. their product is dumb as poo poo too and will never work
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May 15, 2015 17:33
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they don't have funding yet and want to make a super over complicated prototype before their kickstarter (lol) with bells and whistles that are really fiddly and error prone without a lot of involved signal processing that they wanna offload through BTLE to a phone and just ugh I don't know why people don't just fukkin use arduinos and poo poo to test their dumb theories
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May 15, 2015 17:37
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you made the right call
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May 15, 2015 19:49
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current school status:
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May 16, 2015 03:24
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Star War Sex Parrot posted:current school status: avrs are fun lil chips
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May 16, 2015 03:51
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Mido posted:they don't have funding yet and want to make a super over complicated prototype before their kickstarter (lol) with bells and whistles that are really fiddly and error prone without a lot of involved signal processing that they wanna offload through BTLE to a phone and just ugh we've been keeping the 'well maybe we can offload the computation to the host and send the results back' option on the table for a 'oh god everything else we tried failed' situation
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May 18, 2015 21:41
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c electron s: 12+ inches of clock skew & slow as heck flip flops => 
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May 19, 2015 19:35
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fritz posted:we've been keeping the 'well maybe we can offload the computation to the host and send the results back' option on the table for a 'oh god everything else we tried failed' situation that's cool depending on the characteristics of the data channels and what the data is
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May 19, 2015 19:45
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Bloody posted:c electron s: 12+ inches of clock
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May 19, 2015 19:45
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Mido posted:that's cool depending on the characteristics of the data channels and what the data is no you've got enough horsepower to manage a BTLE stack, that sets a lower bound on the peripheral compute capability. now you've got a 20b/s (spec is 35KB/s thru, but that's in an EMI chamber with full control of when packets/notifications are sunk) channel out to something a few orders of magnitude better, and from there if latency is not important you're punting to essentially infinite resources in the cloud stopping at the phone is almost never going to be the right answer
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May 19, 2015 20:48
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Somewhat tangentially related but the RISC-V project published their supervisor ISA spec recently, to complement their already published user ISA spec. http://riscv.org/download.html#tab_isaspec Hopefully we'll see real silicon for this thing sometime this year because the architecture itself is very 
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May 22, 2015 18:27
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