magmastonealex

5 ms·

1.
by magmastonealex 2y ago
I sort of accidentally stumbled into it when I joined an (at the time) startup as they were just getting into the market. So I don't know that I have anything specific to offer :) I don't want to name names for companies in the in
2.
by magmastonealex 2y ago
I'd like to think it's become ubiquitous - it has been a while since I've seen a signal without a red clearance configured. However, the Federal Highway Administration in the US (which sets guidelines, but most states define
3.
by magmastonealex 2y ago
Unfortunately those fears are well-founded. The majority of MMUs on the market that I have had a close look at implement safety-critical functionality on a microcontroller with updatable firmware. Some can even be updated over IP. I haven&#
4.
by magmastonealex 2y ago
Well, the "locked" cabinet generally uses the same key everywhere in North America, which isn't a great start :) A number of agencies put these controllers directly on the Internet (a search on Shodan for some telltale string
5.
by magmastonealex 2y ago
Now you start to get into the differences between the various standards :) In NEMA TS2 (and the more modern ITE ATC), the MMU does enforce a yellow clearance time - you need the light to turn yellow for a period of time before a conflicting
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by magmastonealex 2y ago
This is a great introduction to the mess that is traffic signal controllers! The reality is perhaps even worse than the article suggests. The majority of signal controllers support the NTCIP "standard" MIBs in addition to the &quo
7.
by magmastonealex 2y ago
Generally no, this is something from fiction. I'm mostly familiar with North American traffic signal control, and in those traffic cabinets there is a device known as an "MMU" (Malfuction Management Unit) which acts as a safe
8.
by magmastonealex 2y ago
There is a revocation system in place (the RevokedKeys directive in the sshd configuration file, which seems to be system-wide rather than configured at the user-level. At least, that’s the only way I’ve used it) I agree with the sentiment
9.
by magmastonealex 5y ago
Canada Post, the equivalent of the USPS in Canada, offers exactly this service [1] I've used it for Know-Your-Client type stuff with banks, but it is theoretically open to most if not all businesses. Every time I've needed to inte
10.
by magmastonealex 5y ago
C compiled down to eBPF (as implemented with the Linux kernel) is not turing-complete. eBPF has a wide variety of uses from network filtering to hooking into certain syscalls. The bytecode is theoretically turing-complete, but the verifier
11.
by magmastonealex 6y ago
I'm curious how you'd propose doing that. If I give you a buffer of 5 bytes: [0x68 0x65 0x6c 0x6c 0x6f] there are a ton of ways to interpret that. - The ascii string "hello" - 5 single-byte integers - 2 two
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by magmastonealex 7y ago
We found that working inside a docker container isn't usually turn-key. You need to figure out a system to get UID/GIDs in sync between the container and the host (otherwise you mess up permissions of files in your repository. Thi
13.
by magmastonealex 7y ago
We did find that project as well. It's unrelated though - ours is intended to run on your local machine whereas that one seems intended to run on a server somewhere. Unfortunate naming collision though :(
14.
by magmastonealex 7y ago
Hi Hacker News! We have been working on a tool called ENVy: http://envy-project.github.io/ https://github.com/envy-project/envy ENVy is an environment manager to make working on disparate projects eas
15.
Show HN: ENVy, a Development Environment Manager(envy-project.github.io)
13 points by magmastonealex 7y ago|7 comments
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by magmastonealex 7y ago
I've used this a handful of times, actually! I've mostly done it to determine a "next" IP address from a large range - i.e, what IP comes after 10.0.0.255, and how can I bound it between 10.0.0.30 and 10.0.1.128? It&#x27
17.
by magmastonealex 8y ago
> (maybe with some kind of publicly deployed differential gps?) I believe this is supported/expected in the DSRC specifications. As I understand it, a well-known point, such as a post at a corner of an intersection, is located with
18.
by magmastonealex 8y ago
One reason is to use infrared remotes with an HTPC. With LIRC (and now possibly this more performant solution), you could use pretty much any remote you could find with your computer, with cheaply available and DIY receivers. It's grea
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by magmastonealex 9y ago
Wow, this brings back memories of running the theater in my school. Definitely a different situation, but I like to think we did a good job given what we had. We didn't really have a budget, just some hand-me-down equipment that came f
20.
by magmastonealex 9y ago
Yes, ATSC in North America generally uses MPEG-2 video, in an MPEG-2 transport stream (often with AC-3 as the audio codec). There are provisions to use h.264 within that transport stream, but I'm not sure if any stations actually broad
21.
by magmastonealex 9y ago
It's not super clear which blobs are needed for particular devices - and it's different for all of them. I'm not aware of a single place to find what's needed - though the LineageOS device repositories can help a lot. Th
22.
by magmastonealex 9y ago
The postmarketOS [1] project is trying to fix that. It's effectively creating a unified base layer on top of phones without any Android libraries. There are also lots of efforts to add UIs and other packages as well. In addition, there
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by magmastonealex 9y ago
I agree. The only advantage ADS-B has is that it doesn't require building an antenna unless you want a lot of range. I've found that receiving weather satellite images makes for a much more interesting project, and seeing live sat