Ryan Kingsbury

Falcon 9 is vertical at pad 4E in California ahead of today’s launch of the Transporter-15 rideshare mission. The 57-minute launch window opens at 10:19 a.m. PT → spacex.com/launches/trans…

@Chris_arnade Dhaka makes for an incredible experience for independent and adventurous travelers. I think you'll like it!

So I refined the details of my next trip Leaving in late January for a month round world trip. — Dubai (late Jan) — Muscat (Oman) — Dhaka (Bangladesh) — Kunming (China) — Beijing — Seoul — Washington DC (Feb 26th - 29th) Exact dates not set, but if you around and want to walk with me in any, give me a shout out.

@andrewmccalip @astrojockey It's a cheapo DeWalt, but given I'm tapping M2 threads into aluminum it's not exactly a demanding job.

@roamingryan @astrojockey What's your drill brand of choice?

Wife is at the zoo volunteering. You know what that means, full Bob day. Unless any of the gundo boys want to have lunch and talk shop?

@astrojockey @andrewmccalip Literally what I'm doing this Saturday night. Please don't be jealous.

@andrewmccalip I've never seen someone tap with a hand drill. Is that common?

@astrojockey @somefoundersalt Watching well-funded companies engage in Old Space LARPing always makes for a good laugh.

@somefoundersalt That's why I laugh every time a new company spends a mega-buck on a Mission Control Center.

can you run a satellite mission from a studio apartment? apparently yes.

@kscottz Just a minor recurring skit in the broader security theater. Hilariously, Colorado was one of the first states to become compliant yet last year there was some sort of breakage with backend tech that rendered many Colorado unreadable by the machines at the checkpoints.

Called it. RealID is never going to be a thing. It is a bullshit holdover from the Bush years. forbes.com/sites/suzanner…

@IanJohnBuckley Wow, looks great!

Most significant OSHW project I’ve seen in a while comes to fruition

@lauriewired You might be surprised at how many unhardened x86 machining are in orbit right now running janky old Ubuntu distros. Satellites eternally trying to enumerate network printers that will never come in the cold and lonely vacuum of LEO.

Most space processors today (non-LEO) are radiation hardened. The Apollo Guidance Computer wasn't. Why? Let's look at the RAM, ROM, and CPU. ROM: To lose a "bit" in Rope core memory would requrie physically burning a wire. Impossible from radiation alone. RAM: Similar to the ROM, the bits are stored in a large physical piece of ferrite. Would require a massive amount of energy to flip. CPU: The logic gates of the AGC were about 100um, or about 625 Million times larger in area than today's processors. Also operating at about 14V, instead of the ~1 volts of today's CPUs. A bit flip is possible, but roughly 200x less likely than a modern off the shelf processor today. It was predicted that a hardware fault would occur approximately every 1000 hours of operation. That, combined with the length of the mission, made radiation hardening of processors on the Apollo mission a non-issue.

@ibelings 1-bit ADC, 1 Hz bandwidth and 1-wire interface. We can use it to monitor infrasound. Whales and whatnot.

I want to build an SDR. Should it have lots of channels or lots of BW? USB? Ethernet? RS232?

@hutcho66 Also widely available on Indian Railways.

So something very unique about the long distance trains in China - you can order food from restaurants in the stations along the way and they'll deliver it to the platform, when the train stops the attendants will take it and bring it to your seat.

@kscottz Heck if I know, but I'm just glad society has moved on from the phase where every teenager feels the need to travel with a full size pillow.

What's the deal with these $300 Aviation hoodies and why do all the basic people at the airport wear them?

@JTrea81 In traffic design and urban planning circles, what exactly is the definition of an "errant vehicle?" Does the term cover "jacked up truck being driven recklessly by an idiot" or is there another category for that? I'm all for there being consequences for the latter.

Not a mini-roundabout. And this is creating a deadly fixed object (DFO) for errant vehicles. There are better and safer ways to calm traffic for all users, such as an actual mini-roundabout.

@kscottz "Because we can."

I did my quarterly run to Safeway for dry goods. The prices were not much different than our local grocer. Why is 5lbs of sugar now 4lbs? I'm pretty sure the corporate grocery chains are the reason for food inflation. The big chains no longer offer economies of scale.

@kscottz This is "hard tech" youtu.be/AF8d72mA41M?si…

And another thing... Shut up about "hard tech." Hard tech is when you're deep in the science mine making magic happen and no one believes you that it is possible. Chasing the latest trend for VC dollars isn't hard tech.

We've heard of PCIe over barbed wire, but how about PCIe over pulsed mud?

@IanJohnBuckley @Ascii211 Yeah, I think that's one of the reasons why they recently rolled out those ZU*T parts.

@roamingryan @Ascii211 Oh man I didn’t realize there were no GTH transceivers at all on the low end parts. No wonder they are so cheap.

Next gen Pluto SDR has an image finally, will command a higher price but HRNNNNNGH GIVE PLS More deets: wiki.analog.com/resources/eval…

@IanJohnBuckley @Ascii211 I don't disagree, but I think they would have had to go up to the ZU4 to have 10G capable transceivers. Or maybe the newly released ZU3T.

@Ascii211 The wasted transceivers on SATA and DP instead of adding a 10G ethernet port direct to the PL. I wouldn’t waste my money

@kscottz Apparently the OP hasn't been to Cape Coral!

Counterpoint: This is my street. Here are a few recent shots from around the neighborhood. The Outer Sunset is a working class neighborhood that's still reasonably affordable by SF standards. Why not pick on the more affluent neighborhoods?

@Robotbeat This is nonsense. Current starlink sats aren't generating anywhere near 60 kW each. You are off by an order or magnitude, maybe two.

So... 40,000 Starlink satellites, each 60-70kW apiece and about 60-70% capacity factor gives about as much orbital power production as Google uses in their datacenters.

@ibelings Tape?