[QUOTE=Cakebatyr;49300174]I'm going to say it looks similar to a GX16-4 (4 pin) connector with a pin removed.[/QUOTE]
I used to have a nice fiberglass dish out back because yes, they are still easy to find but it was never really anchored properly. One windy day it ended up next door. I ended up replacing it with a bolt-together mesh dish. :v:
[QUOTE=LoneWolf_Recon;49301009]$12/month for neigh-unlimited access for Iridium satellite usage is pretty affordable, about the same maintenance cost for say owning a domain name.[/QUOTE]
Don't you also have to pay for the bandwidth used? Or is it a flatrate?
You pay for bandwidth used, it uses a special service that Iridium provides, that uses credits, and I believe 50 chars (8bit char) is 1 credit.
That really is not that bad at all considering I'm paying $25 a month for MSAT service and a 2400 bit data link.
Or just use [URL="https://en.wikipedia.org/wiki/Winlink"]winlink[/URL] for only the cost of a ham license.
And equipment I suppose but that's a given with anything.
[QUOTE=Cakebatyr;49299441]Out in the boonies of BC you should be able to pick up one of those massive 6/9ft satellite dishes for pennies. Go make yourself a 1.421GHz (Hydrogen Line) radio telescope out of an RTLSDR.[/QUOTE]
Damn, this stuff is still huge for uni labs though. Could plant a nice telescope for microwave or hydrogen line astronomy out a bit away from civilization and get good data
Wonder what the rules would be for getting one in the cascades. I think snowfall and avalanches would be a worry though, so the station would have to be placed somewhere where it wouldn't face the brunt of the Cascadian winter.
Yay just want I needed distracting project ideas hours before a final :D
[editline]12th December 2015[/editline]
My grandfather's hilariously redneck neighbor somehow managed to occur a 12ft dish and he abandoned it when he left.
It's mounted on a fancy pivot mount too hmmm
[QUOTE=Yahnich;49303228]maybe i shouldve specified id love some pointers.......[/QUOTE]
0x3A28213A
0x6339392C
0x7363682E
[QUOTE=papkee;49302796]Or just use [URL="https://en.wikipedia.org/wiki/Winlink"]winlink[/URL] for only the cost of a ham license.
And equipment I suppose but that's a given with anything.[/QUOTE]
Pfft, PACTOR is where its at.
[editline]12th December 2015[/editline]
[QUOTE=paindoc;49303068]
[editline]12th December 2015[/editline]
My grandfather's hilariously redneck neighbor somehow managed to occur a 12ft dish and he abandoned it when he left.
It's mounted on a fancy pivot mount too hmmm[/QUOTE]
Doooo eeet. If you could make a site to stream the data that would be even cooler.
So this DDS chip says its clock input can take either CMOS or a sinewave at 1/2 Vcc, which in this case will be 5V from USB. I'm assuming they mean that a 2.5V p-p signal is what they want coming in.
So I found several nice TCXO's, but I don't know enough about them to be able to tell what the voltage specifies. It's labelled as a "40MHz 3.0volt TCXO" but then [URL="http://www.mouser.com/ds/2/96/008-0371-0-364714.pdf"]the datasheet[/URL] says it has an operating voltage of 1.8-2.5V.
Anybody more familiar with using oscillators in designs? Normally I'd just use a regular old crystal but I'd like some decent frequency stability.
[QUOTE=Yahnich;49303228]maybe i shouldve specified id love some pointers.......[/QUOTE]
Check out [url=http://m.instructables.com/id/Multiplexing-7-Segment-displays-with-Arduino-and-S/]this[/url] tutorial.
[QUOTE=Cakebatyr;49305743]Check out [url=http://m.instructables.com/id/Multiplexing-7-Segment-displays-with-Arduino-and-S/]this[/url] tutorial.[/QUOTE]
Damn fucking charlieplexing. Just get an extra shift register, they're dirt cheap.
Yeah I remember charlieplexing, confusing as fuck
[IMG]http://i11.photobucket.com/albums/a166/ballsandy/IMG_2083.jpg[/IMG]
Using antistatic foam as a replacement. This feels so dirty.
[QUOTE=pentium;49316424][IMG]http://i11.photobucket.com/albums/a166/ballsandy/IMG_2083.jpg[/IMG]
Using antistatic foam as a replacement. This feels so dirty.[/QUOTE]
Whoever will get the honor to fix this next will curse about the bafoon that used antistatic foam instead of proper springs.
[QUOTE=pentium;49316424][IMG]http://i11.photobucket.com/albums/a166/ballsandy/IMG_2083.jpg[/IMG]
Using antistatic foam as a replacement. This feels so dirty.[/QUOTE]
I would recommend removing that and using a few strips of iron or steel bent in a u shape. That will work much better as a spring.
[img]http://i.imgur.com/Kd69tbZ.png[/img]
I previously attempted that using various types of metal but the problem I ran into was either it didn't "spring" enough or it was falling out when installed.
I'm hoping that by 2040 someone will have a batter method by then like open-cell graphene padding.
I bought a thing.
[t]https://i.imgur.com/mS03tIg.jpg[/t]
After the 180C thermostat from eBay arrives, I'll have some fun with this baby, crank out some adapter boards.
Mmmm.....
[IMG]http://i11.photobucket.com/albums/a166/ballsandy/IMG_2085.jpg[/IMG]
[IMG]http://i11.photobucket.com/albums/a166/ballsandy/IMG_2093.jpg[/IMG]
[IMG]http://i11.photobucket.com/albums/a166/ballsandy/IMG_2097.jpg[/IMG]
Now that's a lot better.
Man, designing small boards is a real pain.
[t]https://i.gyazo.com/792759afbef52d47174dc008ff749153.png[/t]
I feel dirty that I actually had to resort to the autorouter. I just did not feel like trying to route this myself.
Board layout could probably be improved a bit, plus I still should add in some filters on the output, but I'm glad everything at least fits.
[QUOTE=papkee;49330336]Man, designing small boards is a real pain.
[t]https://i.gyazo.com/792759afbef52d47174dc008ff749153.png[/t]
I feel dirty that I actually had to resort to the autorouter. I just did not feel like trying to route this myself.
Board layout could probably be improved a bit, plus I still should add in some filters on the output, but I'm glad everything at least fits.[/QUOTE]
There's like a shitton of space left. This can easily be shrunk by another 25%.
[QUOTE=DrDevil;49330430]There's like a shitton of space left. This can easily be shrunk by another 25%.[/QUOTE]
Well the size can't be changed, it's designed for one of those extruded aluminum enclosures.
But yeah, it could be made smaller if I wanted it to be. But I don't have the talent for laying out small boards so this is fine for now.
I did something stupid. I designed the board with a component in an MSOP package, but I can't etch or mill that small, with any of the tools available to me locally. So I can't get the board made before my work experience ends. Meh.
I'm just going to hand in the gerber files, already handed in the BOM. If the guy wants to actually get the finished product, he can order the board from a fab.
I tried to mill the board at school, it's technically viable, but, ugh. I think it could be done with superglue and really careful soldering, but it's probably not worth it.
[t]https://i.imgur.com/hM0sJpS.jpg[/t]
[t]https://i.imgur.com/cWPmuiD.jpg[/t]
Second picture has one of my hairs for reference.
[QUOTE=papkee;49330336]Man, designing small boards is a real pain.
[t]https://i.gyazo.com/792759afbef52d47174dc008ff749153.png[/t]
I feel dirty that I actually had to resort to the autorouter. I just did not feel like trying to route this myself.
Board layout could probably be improved a bit, plus I still should add in some filters on the output, but I'm glad everything at least fits.[/QUOTE]
Generally the autorouter ("Heresy has been spoken!") is good provided you've setup your DRC/Net Classes correctly with your Fab's minimum specs. However I always do the VCC/GND rails myself because there are the couple occasions where DipTrace derps and has a high current 5V out rail going through a uController's same 5V rail with a narrow as fuck trace.
[QUOTE=LoneWolf_Recon;49332030]Generally the autorouter ("Heresy has been spoken!") is good provided you've setup your DRC/Net Classes correctly with your Fab's minimum specs. However I always do the VCC/GND rails myself because there are the couple occasions where DipTrace derps and has a high current 5V out rail going through a uController's same 5V rail with a narrow as fuck trace.[/QUOTE]
Normally if I'm working on high-current application's I'll route those traces myself, and normally wwhen I'm not confined to 1.5in^2 I'd route everything myself, but to save time and energy I just said fuck it.
I normally do a ground plane on both layers as you saw, and then stitch them together where they're orphaned or a ground trace is cut off.
Laplace transforms are great fun and I managed to catch up and figure out all the past material I was stuck on for my diff eq class. Lots of it is all neat applied stuff, or at least things I thought had applications. I thought forcing and step functions were particularly neat.
Anyways I ought to have just skipped all those topics as 85/160 points on the test were on convolution. Which we only covered in the last week and for which I forgot to study for, completely.
Still though the class was enjoyable, and I'm trying to find ways to use it now as I work with DSP stuff on the Core level in Reaktor
[editline]16th December 2015[/editline]
Right now I'm trying to make an Alesis 3630 clone since I need muh sidechaining
[editline]16th December 2015[/editline]
Still really want to buy a broken 3630 for like $15 and fix it though, those damn things are everywhere
[QUOTE=pentium;49323944][IMG]http://i11.photobucket.com/albums/a166/ballsandy/IMG_2097.jpg[/IMG][/QUOTE]
What's a display like that called?
[QUOTE=war_man333;49336590]What's a display like that called?[/QUOTE]
Nixie tubes, have some more nixies:
[url=http://i.imgur.com/skpNxQV.jpg][img]http://i.imgur.com/skpNxQVl.jpg[/img][/url]
[url=http://i.imgur.com/rMaXw0I.jpg][img]http://i.imgur.com/rMaXw0Il.jpg[/img][/url]
Seller advertises LED buttons as having 12V leds. Button leds are in fact 2.8V and I just killed four of them at once. Seller receives message explaining this and requesting a refund.
Seller says
[IMG]https://i.gyazo.com/78c40a6b374002cc9f1aea0b02e35f1e.png[/IMG]
What do they want, a picture of the smoke coming out of the buttons?
Nixie tubes look soooo much better than 7-segs.
Sorry, you need to Log In to post a reply to this thread.
Electrical Engineering V3
