qjkxbmwvz

joined 2 years ago
[–] qjkxbmwvz@startrek.website 4 points 1 week ago

Oh they absolutely do! My only point is that grid supply must equal grid demand. There are many ways to achieve this, as folks here have pointed out.

Throttling power generation (turning off/disconnecting PV from grid for example), and storage (chemical, heat, or hydro battery) are all established technologies, they just need to be implemented properly to avoid supply/demand mismatch.

[–] qjkxbmwvz@startrek.website 11 points 1 week ago

Of course. Like I said, we know how to do it, but it's still an engineering feat to get it done.

[–] qjkxbmwvz@startrek.website 126 points 1 week ago (86 children)

This gets posted regularly on Lemmy, and while the economic take is tone-deaf at best, there's a real issue with generating more power than you can use. You can't just dump grid power


it needs to go somewhere. The grid needs to consume as much as it generates at all times or else bad things happen.

There are of course solutions, but that doesn't mean it's not an engineering challenge to implement.

Figuring out what to do with kilowatts is easy, but figuring out what to do with megawatts, at the drop of a hat, is substantially harder.

[–] qjkxbmwvz@startrek.website 2 points 1 week ago

The all-wheel-drive ES 500e returns up to 276 miles of range.

For those who want AWD, range will be somewhat reduced.

[–] qjkxbmwvz@startrek.website 4 points 1 week ago (1 children)

Is this for a single person?

[–] qjkxbmwvz@startrek.website 20 points 1 week ago (2 children)

You want an instance? I can get you an instance, believe me. There are ways, Dude. You don't wanna know about it, believe me. Hell, I can get you an instance by 3 o'clock this afternoon... with Achievers. These fucking amateurs...

[–] qjkxbmwvz@startrek.website 4 points 1 week ago (1 children)

I have a keyboard hotkey to take the copy/paste buffer and display a QR code on screen. Straightforward to implement on macOS, and presumably Linux too.

macOS: pbpaste | qrencode -t ANSI

[–] qjkxbmwvz@startrek.website 4 points 1 week ago (1 children)

Maybe not what you want, but have you considered VPN'ing at your router? Doesn't help if you travel, so maybe worthless...

[–] qjkxbmwvz@startrek.website 19 points 1 week ago* (last edited 1 week ago) (1 children)

You can/could also find Coffee HOWTO in your distro's HOWTO package. (I found a reference back to v0.5 of the document in 1998.)

Has simple schematics to get you started for the hardware, using the parallel port to toggle relays.

It's a very neat little document, and inspired me to write a simple kernel module so I could echo 1 | sudo tee /sys/whatever/coffee0 to turn pin 0 high on the parallel port. (This is silly, and it's much easier to just do things in user space!)

[–] qjkxbmwvz@startrek.website 27 points 1 week ago (2 children)

...and regular old murder for ReiserFS.

Not sure what it is about filesystem maintainers...

[–] qjkxbmwvz@startrek.website 9 points 2 weeks ago

Oh durr, yep, agree...not the flying experience I'd want.

[–] qjkxbmwvz@startrek.website 2 points 2 weeks ago (1 children)

Humans weren't meant to live with zero autonomy.

Not every parent removes all autonomy from their child. Sorry that happened to you, sounds like it sucked.

 

Hi,

I am considering upgrading my router (RB750Gr3). I am eyeing the CRS309-1G-8S+IN in the hopes that the fast ISP in town eventually expand to my street (10G fiber).

My question is about L3HW offloading, and how it plays with PBR. Currently, I have a number of rules (/routing/rule), some based on source IP and some on VLAN. The purpose is to route certain traffic through VPNs (WireGuard, but I run on a separate computer, not on the router itself). Example: VLAN10 routes all traffic through main routing table, VLAN20 routes local traffic through router but sends external traffic through VPN-1, and VLAN30 sends everything through VPN-2. I use a number of different VPNs, so it's not just a binary "main route or VPN."

I am unclear how this plays with L3HW offloading. This page ( https://help.mikrotik.com/docs/spaces/ROS/pages/62390319/L3+Hardware+Offloading#L3HardwareOffloading-Inter-VLANRoutingwithUpstreamPortBehindFirewall/NAT ) mentions pbr-cap/usage/lpm-bank but I am unclear if that's referring to what I'd be using. That page also says that only the main routing table is HW offloaded in the context of VRF, so I wasn't sure if that also applied to PBR.

The question then, is, does L3HW offloading 1) Just Work for PBR /routing/rule, 2) only work via Fasttrack (perhaps requiring some redirect-to-cpu switch rules), or 3) ain't gonna work?

To preempt a few questions: I know Fasttrack is a last resort. I am a single household, I don't have concerns about TCAM exhaustion. I am considering a CRS instead of a "true" router due to cost and reduced energy footprint. I also know that I don't "need" 10G; if it is ever offered on my street it'll be via an ISP with a "best effort" policy, i.e., they don't have throttled tiers, so 10G is their only offering (cheaper than we're paying now for asymmetric cable).

Thanks!

 

What I want: I want to be able to route specific clients through different interfaces (WireGuard tunnels), and I want this behavior to persist upon disconnect/reconnect. Clients can change which tunnel, with several VLANs being able to use the tunnels (so a client A on VLAN 124 and client B on VLAN 789 can both use VPN tunnel X or Y at their discretion).

What I have: IPv4 works fine (routing rule src address -> routing table). IPv6 works, but is not persistent, as clients change their IPv6 address. (I have a dinky script where I enter IPv4 address and country, and it will grab a VPN peer from a json file, set it up, and add the IPv4+current IPv6 address to the routing rules. This works well currently; I use Mullvad.)

Any recommendations? Ideas: use IPv6 mangle based on MAC address, but I have been having trouble getting this to work (extremely slow). Another idea is to have a script run and grab the IPv6 address of client (either by hostname or by DHCP lease+MAC info), but I'm not sure if it's possible to trigger a script upon IPv6 neighbor discovery.

Any help appreciated!

 

People often complain about San Francisco's public transit


and to be sure, it's not perfect by any means (multiple separate agencies doesn't help). But the historic streetcars are pretty neat!

They're painted with the livery of various historic streetcars from all over the country (and a few international, I think). Best of all, they run alongside the modern fleet


same route, same fare.

 

Noticed a few days ago that Sutro Tower's red blinking lights are now white. Just asked them on their website form, but wondered if anyone else knows the story with this.

Personally, I miss the red ones!

6
submitted 2 years ago* (last edited 2 years ago) by qjkxbmwvz@startrek.website to c/amateur_radio@lemmy.radio
 

Howdy!

I got my Technician in early 2000s, and last year finally upgraded to Extra. Looking to set up a very basic shack.

I'm looking for an HF setup, with most of my use probably using digital modes, but would like the ability to use voice.

Current transceiver is on loan from girlfriend's dad, a Ten-Tec Scout 555


50W HF unit with separate modules for each band. One limitation of this is that the modules set the mode, so it's LSB on 40m, making e.g. FT8 not possible (without some hacking of code or perhaps hacking the module).

Antenna is end-fed with an off-the-shelf 49:1. Currently only have 20m half-wave, but have just enough room for a 40m half-wave in the attic, which is the ultimate goal.

For digital modes, it looks like there are sort of 3 classes of radio:

  • "full digital" where the radio has e.g. a USB port and handles audio, transmit, and frequency set.
  • Some computer-control with RS232, but uses computer audio+adapter to transmit.
  • No digital, use adapter to transmit. This is what the current setup uses (and it works great!)

I'm leaning towards a conventional transceiver, e.g., something from ICOM, Kenwood, Yaesu, (or others) rather than an SDR unit. I'd like the ability to go up to 50-100W if possible.

I don't have a hard-and-fast budget; would like to keep it <$1000 if possible; mostly just looking at used transceivers. Something like a Kenwood TS-590 looks pretty amazing and very "plug-and-play" (but pushing up against price). Something like a Yaesu FT-920 looks pretty feature-rich too; and even something more affordable like an ICOM 706 or even a 725 is probably more radio than I need. Or just grab a new 7300 and call it a day!

Anyway...clearly, I don't know exactly what I want, but figured I'd ask folks with more experience if they have any wisdom. Thanks!

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