planteen

33 ms·

241.
by planteen 8y ago
I was talking about solar farms. I've started to see a few of them scattered around Colorado. The structure looks like something dug with a fence post hole digger. Old fences definitely show their age around here (as in they are crooke
242.
by planteen 8y ago
> This seems odd to me. Solar panels should last at least 30 years but we've been finding most just keep working, potentially for decades longer. What installations do we have data on that have been running since 1970 or so? You say
243.
by planteen 8y ago
My guess is modular will still be an option, if not the only option. x86 CPUs have really been PCBs for over 20 years. You are now starting to see a move toward SoMs take off in the embedded world, which combine the CPU and RAM on a module
244.
by planteen 8y ago
Most wouldn't consider starting a farm or a ranch a "startup" in the usual sense. There are many people starting farms every year the US. Things are very different compared to a tech startup, with much higher capital costs (l
245.
by planteen 8y ago
Did the telemetry arrive in CCSDS format? Did you consider directly logging all of the CCSDS headers?
246.
by planteen 8y ago
I also live in Colorado and only got one such letter last year after a lot of online shopping. It was from B&H and was wrong, though the dollar amount wasn't very high. I placed an order where one item was back ordered, so separate
247.
by planteen 8y ago
Wireshark has a document: https://wiki.wireshark.org/CaptureSetup/Ethernet I personally use a hub. You are limited to 10 or 100 Mbps (no gigabit hubs exist). I typically am debugging embedded systems, so inserting a hu
248.
by planteen 8y ago
Yep learned my lesson once on a malformed dd command and never again have I made a mistake.
249.
by planteen 8y ago
200 km/s seems an order of magnitude high to me for "today's technology". The Voyagers and New Horizons have an escape velocity of around 20 km/s. Isn't reaching escape velocity the metric you want here? You wa
250.
by planteen 8y ago
This was 10 years ago, but the data closets had SFPs on the switches for the fiber. So the cost of the "media converter" was really low - just needed a few. There was existing CAT5 in the walls, all of the runs would be well less
251.
by planteen 8y ago
I think the difference between the two is that Madison is further from Milwaukee. It looks to be around 80 miles between Madison and Milwaukee. Denver and Boulder are much closer, about 30 miles.
252.
by planteen 8y ago
I did technician work as a side job during college. It seemed like most dorms had data closets every floor/every other floor. Some buildings only had them in the attic and basement, but they were also usually limited to 4 levels. Are m
253.
by planteen 8y ago
Yep. Having worked in Boulder for 4 years, my observation is that the number of people who actually live in town are the minority. In-college interns or new college grads tend to live in town. There is a smattering of more senior engineers
254.
by planteen 8y ago
I'd assume when you are going 40 mph and hit the brakes as hard as you can that you'd hear squealing and leave skid marks? Anyone have a guess for how hard the brakes were applied?
255.
by planteen 8y ago
I brought this up a while back on HN. It looks like in the most optimistic case you are looking at 20 Gbps per spacecraft and 200 spacecraft over the continental US for Star Link. So you are looking at 4 Tbps capacity for the entire country
256.
by planteen 8y ago
Certainly an engineering marvel. However I feel like the 90 day initial "goal" was to ensure to set the bar low so the mission could be declared a success.
257.
by planteen 8y ago
I'd love to see more focus on embedded boards with decent GPUs. About a month ago, I was looking for a hobbyist embedded Linux board with Vulkan support. I couldn't find a single one. There's one in development, but it can&#x
258.
by planteen 8y ago
The Huatla system is over 50 miles long and probably has a few dozen bolts, strategically placed at vertical pitches. Nobody is drilling holes in the rock for the hell of it. The bolts will be drilled into dirty limestone, not formations. I
259.
by planteen 8y ago
The terrain in some caves is so varied it seems like current state of the art robotics would have trouble. You might have to crawl for an hour, climb up and down breakdown, then rappel 600 feet into a pit. While a drone certainly could hand
260.
by planteen 8y ago
How so? Cavers will bring a change of clothes to avoid getting mud on a sensitive part of a cave with pristine formations. When entering virgin passage in dry caves like Lech, they very carefully plot a way through the room. Some rooms have
261.
by planteen 8y ago
Cavers will use natural rigging when it is available. Many pits are bell shaped since they form from the bottom up. So they are quite easy to rig an rappel. You tie off to some breakdown or perhaps a tree if you are on the surface and one i
262.
by planteen 8y ago
> explorable by certain people with certain skills and attitudes, without huge funding demands Absolutely true. I'm friends with several people on that list. Everyone I know has a "normal" job. Caving is quite inexpensive.
263.
by planteen 8y ago
Yeah, I know you can use vim. Text editing is not even close to where the major pain points are with Vivado. There's more to the workflow of developing a FPGA than adding files in Vivado. My experience went something like this: An hard
264.
by planteen 8y ago
The quality of the tool chain absolutely has bearing. You are essentially locked into using using the FPGA vendor's tools. And its not like there is much choice in FPGAs anyway. You have Xilinx, Altera, Lattice, and MicroSemi. In a sma
265.
by planteen 8y ago
> ARM CPUs are the de-facto standard in the embedded world (except for simple 8-bit MCUs), so what should Xilinx have done? Design their own, proprietary CPU architecture and ISA? Choose some other architecture with 2% market share? Both
266.
by planteen 8y ago
And don't get me started on trying to version control a Vivado project. It's like they didn't even consider the possibility of committing a project to source control! I last used Vivado about 2 years ago but doubt things have
267.
by planteen 8y ago
I tell them, "Sorry, but I rent." Gets them off my back immediately.
268.
by planteen 8y ago
What city do you live in? I live in Denver. Houses last way longer than 50 years here. Old houses here are quite desirable due to many of these neighborhoods proximity to downtown. The last two houses I rented were from the 1929 and 1943. T
269.
by planteen 8y ago
Clang handles intermediate ELF object files fine and can link into a Mach-O final executable. Windows under MSVC doesn't use ELF either (it uses PE for the .EXE) and it links in intermediate ELF object files fine. I've made an EXE
270.
by planteen 8y ago
You are just dealing with ELF files, so objcopy works fine in those scenarios as long as the architecture matches for the linker. This trick works many other compilers that use ELF such as clang, MSVC, Green Hills, etc.

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