Shpaget

I bought one quite a few years ago, then realized a VGA to HDMI adapter costs around $100 I had a two monitor setup (both VGA) at that time and I was willing to re-purpose one for RPi. , which was waaay too much I was willing to spend. So I then set it up hooked to a TV, I managed to boot it up, but that setup was entirely not practical. I unplugged everything and it's been sitting on my shelf since then. In the meantime, I've come across the VGA to HDMI adapters that cost $5 shipped from China (I swear, there was no such thing when I was trying to tinker with RPi), and I even bought a new monitor (that has more ports that I can poke a stick at, including HDMI), but I never got around to play with it again. I'm an Arduino guy.

What if we mount the engines in reverse? Since the magical treadmill, for some reason, needs to keep the wheels spinning, will the plane start moving forwards? What if we put a giant anvil on the treadmill in front of the plane? Does that count as brakes? Can't believe this thread is still going on.

Of course it moves forward. The belt can not make the plane move backwards if the plane applies thrust and releases brakes. The friction in the wheel bearings is too low to matter.

Treadmills have no effect on planes. I have no idea why would anybody think otherwise. Mythbusters have checked. And it works in KSP as expected.

Actually, you can. Go to a local tire shop thing and ask them to fill your tires with nitrogen. It's not terribly expensive. Air contains quite a bit of water which is a significant factor in thermal expansion of air.

You mean one of the best games in the entire history of games ever? Does spending thousands of hours on it count as hearing about it? I haven't played it in a while, partly because I'm still looking for the mod pack that takes care of cargo distribution, passenger destinations and automatic train separation. I have no idea what it was called or who made it, but all I can find now is too complex, and I get the feeling that most of the mods today deal with either path finding or overcomplicated signals.

Thanks for clarification. Updated.

Does this mean that 18.05 (that is the latest available at the moment) is secure?

Yeah... Are you using interrupts or are you polling your sensor? Try debouncing techniques. Do you have access to an oscilloscope? Give this thread a read: https://forum.arduino.cc/index.php?topic=391811.0

Honestly, that's pathetic. I though that the most expensive part of the space program was the unusual amount of double checks making sure everything is done properly, but after seeing this I've lost hope for JWST. If I were in charge, they'd have to disassemble the whole thing and start over. If they have loose nuts and bolts after just a few months of sitting in a fridge, the thing will fall appart during the launch. NASA, get some threadlock or safety wire.

As long as it doesn't become Big Fantasy Rocket.

Sunsets are always a good thing to shoot. One of mine from a few years back (22.7.2012).

A bit of a downer in the spoiler.

Good point there. I have no idea.

But the proposed ship is bigger than this landing zone. Also a big rocked would be less susceptible to wind, wouldn't it (force from the wind being proportional to cross section, while mass being proportional to volume)? Another thing, I don't recall it being mentioned in this launch, but in one of the previous, it was stated that, while descending, the rocket is aiming at a spot that is specifically not the landing pad and only move over once it establishes a stable hover. It's a safety thing in case the engine doesn't restart, so the rockets slams into a cheap ground and not into an expensive landing pad (or a ship with NG).

The landing computer most likely doesn't try to land at the point in the center, but inside a much wider circle. If it is inside it, it lands. No point in doing risky translation movement so close to the ground any more than necessary. That circle the computer aims for is not necessarily the same circle as the one painted on the ground.

Why not? You've got ballsy folks with $$ to spend. Perfect customer. Yes, there are small retro rockets to slow down moments before touch down.

Seems fine for me. For a moment I thought it wouldn't light the engine in time.

Going up!!

Hmm, they've covered about 4/5 of the windows with Al foil. Any guesses why? T - 7:30

Yeah, apparently.

Livestream is up. https://www.blueorigin.com/#youtubeZUV53Nn3PhA T - 42 minutes

Peak to peak voltage in Europe is around 325V. Figure 220 V (or 240 V) and 110 V, implies RMS which in AC is always lower than peak to peak. https://www.worldstandards.eu/electricity/plug-voltage-by-country/ https://www.worldstandards.eu/three-phase-electric-power/

Most? Perhaps in US, but certainly not in Europe. Over here in Europe live is 220-240 V relative to the neutral which is directly connected to the earth wire just before your RCD (ground fault interrupter). Electricity is generated in 3 phase state and carried over high voltage power lines. Once it reaches a substation in your neighborhood and is dropped to 220V the three phases are sent each in its own direction and distributed over the neighborhood, so you and your neighbor could but are not guaranteed to be on the same phase. Neutral is the fourth wire that is split in two just before it reaches your RCD (ground fault interrupter) where it becomes neutral and ground. After the RCD they are never connected again. As for safety difference between 50 and 60Hz. This is the first time I've heard about it, and frankly doesn't seem to hold water. There is nothing in human body that would distinguish such a small difference. There is a small difference between DC and AC, due to zero crossing, but you would not want to get zapped by either. Bottom line, single phase is just a three phase split into three directions, and one phase is more than enough to zapp you (but if you have wet hands from washing the machine that gives you the shock, single phase is more than enough to kill you), but voltage difference in three phase is higher (400 V) facilitating higher currents through the body.

Kudos for getting some hardware on line! I wouldn't be surprised with the difference in odometer and your hall sensor device. Odometers are not particularly accurate devices and there could have been some error in your measurements of the tire diameter. You could and probably should calibrate your device by comparing its data to some known and well measured distance such as a football field or a decent stretch of straight road and compare it to GPS data or even Google maps measure tool, which is certainly better than 7% accurate over a few kilometers. Great job anyway!