The last thing astronauts or astronauts on the International Space Station want to hear from one of their crew members is: “Did you smell burning plastic?” But that is Obviously what happened this week On the increasingly problematic spacecraft, the smell of burning and visible smoke spread from the Zvezda module in Russia to the American side of the town. It was reported that it happened while charging the battery at the station, and we all know how dangerous this can become. But obviously, the situation was resolved in some way because normal operations continued shortly after the incident. Between reports of cracks, air leaks, attitude control issues, and even sabotage allegations, the International Space Station really began to reveal its age.
Speaking of combustion and batteries, usually a story about burning Tesla batteries does not attract our attention.but This story from California Introduced a potential failure mode for Tesla batteries that we had not considered before. A semi-truck with Tesla batteries appeared to fail on Interstate 80 in the Sierra Nevada Mountains and eventually overturned the highway. The live video showed that the goods looked like replacement batteries, or possibly batteries recovered from the wrecked car, scattered on the transportation pallet on the highway. There are reports of fire, but it is not clear whether it was one of the batteries that was damaged in the collision or something other than the battery. Nevertheless, we did not consider the potential disaster when shipping such batteries.
Attention all GNURadio fans—— GRCon21 is fast approachingUnlike most conferences in the past year and a half, GRCon21 will actually be online and live broadcast at the same time. We always like the conversation dump after the conference, it covers such a wide range of topics and really goes deep into many cool areas.We are especially looking forward to the SETI talks and it’s nice to meet our friends Hash, Who is In hacker chat A while ago, I planned to talk about his smart meter hacking. The conference started on September 20th in Charlotte, North Carolina, of course, actually. If you participate, please be sure to provide a hint for your favorite speech in the hint line so that we can share it with everyone.
We got a tip this week A video on how the 1/4 wave tuning stub worksThis is a simple demonstration that uses a piece of coaxial cable, a signal generator and an oscilloscope to show how the unterminated feeder reflects the radio frequency back to the transmitter, and how to use it to build an ultra-simple notch filter and impedance transformer. We like the demos that make the mystery of RF easier-W2AEW video comes to mind, just like this video about standing waves.