Carottage | Hackaday | FR24 News France – .

Carottage | Hackaday | FR24 News France – .

Good news from Jezero Crater as the Martian rover Perseverance manages to accomplish for the first time what it was sent to do: collect and cache rock core samples. Space buffs will no doubt remember that Perseverance’s first attempt at coring did not go as planned: the rock selected by the planetologists turned out to be too soft and the impact drill just turned the core into powder. The last attempt went exactly as planned: the cylindrical corer made a perfect cut, the core slipped into the sample tube tucked inside the core barrel, and the core broke cleanly at the core. inside the sample tube when it has been jerked off-axis. Operators were able to provide visible evidence that the core was stored this time using the Mastcam-Z instrument, which clearly shows the core in the collection tube. What is interesting is that they then performed a “percussion to ingest” maneuver, where the core bit and sample tube are briefly vibrated, so that the core and dust grains left around. of the sealing edge slide into the sample tube. The next step is to transfer the sample tube to the rover’s belly where it will be hermetically sealed after a basic scan.

Have Android users perhaps slept too long this week? If you did, you’re not alone – many Google Clock app users reported that their preset alarms didn’t go off. Whether this is an actual issue caused by an update or some sort of glitch is unclear, but it clearly hasn’t affected everyone; my phone ruthlessly reminded me when 6:00 am was arriving every day last week. But this apparently tripped up some users, to the point where one said they lost their job due to being late for work. I don’t mean to be judgmental, but it seems to me that if your work is so sensitive to your delay, it might be a good idea to have some sort of wake-up call. We all seem to be a little too confident that our phones will “just work”, and when they don’t we are surprised and dismayed.

There seem to be two kinds of people in the world: those who hate roller coasters and those who love them. I am firmly in the latter camp and would gladly try any coaster, no matter how extreme. There were a few that I later regretted, sure, but overall the feeling of being on the verge of bodily injury is pretty cool. Crossing the rim, however, is much less enjoyable, as owners of extreme roller coasters in Japan learn. The Dodon-pa roller coaster at Fuji-Q Highland Amusement Park is capable of reaching 180 km / h and has accumulated a significant collection of injuries over the past ten months, including cervical and chest fractures. The arena is currently closed for a safety overhaul; one has to ask what they are doing to assess what the problems are with the trip. Maybe they send crash test dummies on endless rides to collect data, a sight we’d love to see.

And finally, you might have thought that telephone phreaking was a thing of the past; in many ways you would be right. But there’s still a lot to learn about how POTS networks came to be, and this guide to identifying phone switches should be of great help to any phone geek. Be ready to ride the old-fashioned way here – nothing more than a simple text file that describes how to probe the switch a phone is connected to just by listening to things like tones and ringtones. The good thing is that it describes why switches sound the way they do, so you get a lot of juicy technical information on how switches work.


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