Torkel

If I understood it correctly Starlink doesn't send between satellites yet, only sat<->ground. Sat<->sat is a big point of starlink and when they roll that out the latency should go down, especially for starlink<->starlink comms I imagine.

No, for some reason I decided to use a regular duvet. With a sleeping bag it would probably have been less of an issue.

I agree - I packed an air mattress to sleep on during camping when it was cold on the ground. The air didn't insulate as well as I expected so I was freezing from below.

There are so many things around us that are such incredible achievements in comfort over not having them. It is a good experience living without some of them for a while to get appreciation for it:

- electricity - heating - beds - running water - showers - drains (sewer? I mean being able to pour out water in the kitchen, not having to carry it out) - washing machine - (etc)

This is an interesting idea, would be great to see this tried with graphs.

Why don’t they do this with the ice blocks you get for keeping food cold on camping trips?

I think the lockdown is a large reason why it looks like this. There are simply less things to spend money on at home, and all the free time at home means people are looking over their economy. And speculating/investing.

Did you see the pdf manual? I would actually have preferred something online for docs, but there is not a lack of documentation for Tracy.

On application side I recommend using an instrumenting profiler that will let you know down to sub-microseconds what the code is doing. Tracy is a good choice (https://github.com/wolfpld/tracy) but there are others, e.g. Telemetry.

Good info! I didn’t know this :)

We have a cuckoo rice cooker in Sweden (purchased in Korea). It is great!

Our cuckoo is a preassure cooker, and the rice it makes is the best I’ve had.

We currently live in Tokyo, and the Panasonic we got here is not as good as the cuckoo. Maybe because the power here is weaker?

It's about the 'why'. The thing that Mars has to offer that Antarctica does not is "backup solution for humankind". An asteroid impact can make earth uninhabitable. With a self sustaining backup on Mars we can keep humans around even after that. Asteroids are interesting too, but more far fetched than Mars.

I recommend watching the Elon Musk presentations on Mars / making life multiplanetary.

The video mentions that this was done because the people in the driver cabin became covered in diesel soot as the sealing between engine and cabin was not 100%.

Here's a twitter thread by a guy who built a nice model of one:

https://twitter.com/PeterOlsson/status/1280940641472655367

As other commenters I'm reminded of the classic RIM roadrunner effect - the decapitated chicken that keeps running.

Another thought though: is it completely unthinkable for Intel to pull an AMD themselves and spin out their fabs and rely on whoever has the best fabs out there? I mean - if they are years late with something that is already outdated there are not too many downsides to it.. Next-gen process nodes are now so delayed that they might as well use the time until then to retarget their designs for TSMC/Samsung.

I tried to share the link to this via fb messenger, and it blocked it because it "goes against our Community Standards".

A while back the same happened to pouet (https://twitter.com/pouetdotnet/status/1249453524758528000).

Demoscene stuff seems to be good at triggering the filters :)

Now, this is probably nothing. The sensors are doing their thing and from time to time there is a spike. On the other hand, this is how Chernobyl first was reported...

For more radiation horror pease read about the ”Goiânia accident”: https://en.m.wikipedia.org/wiki/Goiânia_accident (Learned about it recently and wow. What a story.)

Yeah, I was also disappointed in this story. Shallow and bad explanation and after reading it I am still none the wiser as to in what way those textbooks would be in need of rewriting.

To quote Linus Torvalds:

"Some people think that "the cloud" means that the instruction set doesn't matter. Develop at home, deploy in the cloud.

That's bull*t. If you develop on x86, then you're going to want to deploy on x86, because you'll be able to run what you test "at home" (and by "at home" I don't mean literally in your home, but in your work environment)."

So I would argue there is a strong connection.

There's a chocking secret at the end of it... hope that guy doesn't get in trouble for this.

Here's the twitter profile of Anastasia Opara: https://twitter.com/anastasiaopara

I recommend following her - she does amazing things at Embark Studios these days :)

Yep. It's a lot of work creating a non-stuttering, fast-seeking player using ffmpeg/libav. For high resolution / high bitrate streams ffmpeg doesn't issue frames smoothely in itself (I-frames takes longer) so I had to create a whole caching structure and issue the frames from a different thread to get it to play smoothely in my application...

On the other hand there are so many edge cases around codecs and assumptions around what is and is not coming so I think that if a different API was created there would likely be a lot of cases where it would break? Something like the NDI API would be great, it is really quick to integrate.

”Source: Discussion with various SpaceX engineers at GDC 2015/2016”

I wonder if they had to change any of this for the human rated mission? Would be super exciting to hear tech talks from Spacex!

Nice build :) Have you checked out EasyEDA + jlcpcb? It can improve the electronics aspects of robot projects.

I searched a bit now to see if any new projects have shown up. Came across this one: https://hackaday.io/project/167845-mjbots-quad Could maybe be interesting, but I haven't looked into it.

Here is a chinese motor manufacturer that makes more sane motors: http://www.gyems.cn/product.html

Getting a drone or gimbal working properly from scratch is a lot of work. And these dynamic walking systems are more complex endeavors because there is less info out there. So I would recommend to find some project with people who seems talented and has a nice atmosphere and then get building :)

edit: Ratholed on this, here is a nice blog with inspiration (scroll for lots of awesome) https://build-its-inprogress.blogspot.com/

No. For these motors to do their job at these low speeds you need to know where the windings are relative to the magnets so you can apply a controlled force instantaneously.

Btw, this is true for gimbals too, and good gimbals use sensors.

It's not that rc-servos are not sexy. It't that they suck. For a number of specific reasons well listed in other posts here.

RC-servos are very cheap and very easy to use, so there are many projects using them. But there is no way to make a good robot out of them. It's a local maximum.

Sure. I should have written "rc-servo". But in this context it was not ambiguous and the point stands - anything that uses rc-servos is a dead end. Personally I'm also skeptical of series elastic actuators - it seems like a half-assed solution where the proper solution is to embrace full direct-drive digital control of electrical <-> force conversion.

Here are two:

MIT Cheetah: https://biomimetics.mit.edu/

Unitree/laikago: http://www.unitree.cc/

It has the wrong kind of motors to be interesting. Servos are a dead end, imo.

The interesting robot projects now are the ones embracing brushless motors with encoders and dynamic walking gaits. It’s the same components that are used in drones.

We did this in our binary - adding a message in there which would be seen if attempting to reverse engineer or crack it. No emails from that yet though :)

That half-black mac logo...

Am I the only one thinking transition to ARM?

I guess I should mostly attribute it to the Baader-Meinhof effect [0] then.

[0]: https://en.wikipedia.org/wiki/Baader-Meinhof_effect