Viewing profile — magmastonealex

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'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 (w…

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 upd…

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…

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 li…

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…

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" (Mal…

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, t…

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 …

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 …

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 si…

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 me…

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 na…

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 di…

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 b…

> (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 p…

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 comput…

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…

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 …

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 LineageO…

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…

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 …