roadrunner84 466 Posted September 24, 2014 Share Posted September 24, 2014 @@roadrunner84 That sounds interesting. Do you have any more details? Our company builds charged particle optic lithography devices, for which several different primitive shapes (triangles, rectangles and others) need to be translated from artwork to beam exposure on substrates. Skewed lines are fastest and proven most accurately rendered using Bresenham's line algorithm, and triangles happen to contain at least one such skewed line Fine print: I write on this forum on my own name, not my company's. Anything I state is not to be considered an official statement of any part of my employer's company. Fred and tripwire 2 Quote Link to post Share on other sites
Fred 453 Posted September 24, 2014 Share Posted September 24, 2014 Wow. That sounds like an incredible job. I do IT for a life insurance company. Not quite as exciting. Quote Link to post Share on other sites
spirilis 1,265 Posted September 24, 2014 Share Posted September 24, 2014 Wow. That sounds like an incredible job. I do IT for a life insurance company. Not quite as exciting.Ah, insurance co..... that explains the borg implants :-D Sent from my Galaxy Note II with Tapatalk 4 Quote Link to post Share on other sites
bluehash 1,581 Posted September 24, 2014 Author Share Posted September 24, 2014 Word for the wise- Before deploying a sensor board outside, seal it up! My Wolverine LP + AS3935 Lightning sensor + fueltank bpak project I left at the TI booth at MakerFaire hoping to get some data from Saturday night, but humidity + condensation seemed to kill it... and I couldn't seem to recover it on Sunday, had LFXT1 faulting (fixed that) and then one of the pushbuttons repeatedly triggering. Hit the board with hot air tonight and it seems to be working fine now. Going to use silicone grease or hot glue or something to seal the ICs and pushbutton leads next time I try to use this thing outside overnight. If little a bit of condensation killed it, WTF is some lightning going to do to it? I think spirilis is using it in as an extreme use case. I don't think the LP was made to sit outside for extended periods of time. It did rain the night before and was humid in the morning. spirilis 1 Quote Link to post Share on other sites
spirilis 1,265 Posted September 24, 2014 Share Posted September 24, 2014 If little a bit of condensation killed it, WTF is some lightning going to do to it? I'm thinking a van de graaf generator or just a good 'ole fashion Tesla coil would be a nice testbed here... roadrunner84 1 Quote Link to post Share on other sites
greeeg 460 Posted September 25, 2014 Share Posted September 25, 2014 I'm settling in to a new home, but adding 24 network points around the place. Going to reporpose part of my pantry to hold some patch panels + misc networking gear. Quote Link to post Share on other sites
pabigot 355 Posted September 25, 2014 Share Posted September 25, 2014 I'm settling in to a new home, but adding 24 network points around the place. Going to reporpose part of my pantry to hold some patch panels + misc networking gear. Good grief. And I thought my /22 local subnet with 170+ hosts in internal DNS and three Wi-Fi SSIDs was overkill. Quote Link to post Share on other sites
greeeg 460 Posted September 25, 2014 Share Posted September 25, 2014 Good grief. And I thought my /22 local subnet with 170+ hosts in internal DNS and three Wi-Fi SSIDs was overkill. Our house used to have a 32RU Server rack, housuing a few home servers, 48 port gigabit switch, Some ridiculous 24 HDD RAID array, UPS. Until my brother moved out and took it with him. But we never had a good wired home network infrastructure. I have the cable and the time, so I figure why not. It's only overkill if you spend more time maintaining it than actually using it. Quote Link to post Share on other sites
pabigot 355 Posted September 25, 2014 Share Posted September 25, 2014 Our house used to have a 32RU Server rack, housuing a few home servers, 48 port gigabit switch, Some ridiculous 24 HDD RAID array, UPS. Until my brother moved out and took it with him. But we never had a good wired home network infrastructure. Never got into buying rack-mount hardware: too expensive. I still have a 48" four-shelf wheeled restaurant rack that holds six+ desktop chassis plus switch and UPS in the "computer room" but it's down to only one always-on server. I'm probably going to consolidate it with the stuff in the comms closet in the next infrastructure reorg. The office installation is smaller (but still on a wheeled rack with UPS). I do also have a 66-block that would support four phone lines if the folks who wired the house for me had bothered to connect the last two pairs, and a 12-port patch panel supporting 11 Cat5 endpoints in five locations (some are point-to-point). But 24 wired drops in one house? Only if it's new construction; I'm tired of losing fish tapes that get hung up in the walls. Even then, I just don't have enough high-bandwidth internal network traffic to warrant going wired, especially with 802.11ac at 5GHz promising 600 Mb/s per link. I have the cable and the time, so I figure why not. Yeah: once you buy that 1000ft spool of Cat5e, the bucket of Poly Line, and the punch-down and crimp tools, it's pretty tempting to find opportunities to use them. It's only overkill if you spend more time maintaining it than actually using it. This is true. Quote Link to post Share on other sites
zeke 693 Posted September 26, 2014 Share Posted September 26, 2014 This little project has been on my bucket list for a while. I just finished the layout for my UARTWidget which is a USB to RS232/TTL interface. The RS232/TTL pinout matched the Adafruit FTDI Friend board. I figured "Why not?" The board is 50mm x 31mm and has a USB-Mini-B connector on it. Yeah Yeah I know. I'll look for a Micro-B connector tomorrow. This is what it looks like. Quote Link to post Share on other sites
chicken 630 Posted October 12, 2014 Share Posted October 12, 2014 First time back in the lab since many, many weeks (months?). A few weeks ago, I ordered a bunch of extruded aluminum cases off AliExpress to find an enclosure for my dAISy project. The black one, which measures approx. 4x4x2 centimeters on the inside, turned out to be my favorite and I already started to re-layout the PCB. Once built up, I will have to figure out how to make/modify the face plate. Probably I will end up with laser cut black plastic. I'm also procrastinating over getting a spectrum analyzer as I want to add a bandpass filter to the design, which is a bit fly-by-night without verification. Any ideas where I could loan one in the Seattle area? bluehash 1 Quote Link to post Share on other sites
greeeg 460 Posted October 13, 2014 Share Posted October 13, 2014 First time back in the lab since many, many weeks (months?). A few weeks ago, I ordered a bunch of extruded aluminum cases off AliExpress to find an enclosure for my dAISy project. The black one, which measures approx. 4x4x2 centimeters on the inside, turned out to be my favorite and I already started to re-layout the PCB. IMG_0993.jpg Once built up, I will have to figure out how to make/modify the face plate. Probably I will end up with laser cut black plastic. I'm also procrastinating over getting a spectrum analyzer as I want to add a bandpass filter to the design, which is a bit fly-by-night without verification. Any ideas where I could loan one in the Seattle area? Those cases look very nice. Are they cheap? (especially being from china) You could try contacting a local university, see if they have some RF equipment. Quote Link to post Share on other sites
chicken 630 Posted October 13, 2014 Share Posted October 13, 2014 @@greeeg the cases were between $2.50 and $5.60, total $26 for all four including shipping. The small black enclosure I will go with is $3.20 in singles. Quote Link to post Share on other sites
yosh 121 Posted October 13, 2014 Share Posted October 13, 2014 @@chicken Could you please post a link to the black case? Thanks Quote Link to post Share on other sites
L.R.A 78 Posted October 13, 2014 Share Posted October 13, 2014 Well, here in university we have a kinda of parade with the freshman in which we have to give them some sort of suit. Well mine will have something like this. Maybe something more if i can remember something else in time. They all need to take a potty with them so mine will have the best potty ever I wanted to make it with a MSP430G2553 but i still haven't learnt how. So i'm using a TM4C123 launchpad. Since i already made a code to control the led strip with a tm4c1294 it should be easy right? Nope! The TM4C123 is different enough so it would not work so i made it from scratch with the SSI Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.