Cuban peso exchange rates, right now about 300 pesos to the dollar
map of Love’s truck stops in the US
#video about #manufacturing silicon #materials from sand with thermite. I didn't finish it because after the first five minutes he was still just talking to the camera. Luis Horas is not always this bad.
#video about #manufacturing a simple electric arc furnace for melting brass
#video devlog about making #visual-novels in #Godot. Unfortunately the video is about 60% stock-footage filler, turning a 6-minute video into a 15-minute one. I’ll be sure not to watch any more videos by "Gary the Enchanter". #games
#PhotonicInduction #video about a 30kW xenon lamp and a 4kW one. He runs them off a DC welder, plus a high-voltage AC starter. They are very bright and generate a lot of heat. The 30kW lamp has what appear to be plumbing fittings to run water through the electrodes, but the 4kW one relies on radiative cooling. Running the 30kW one at 4kW without attaching the water seems to be overheating it, and they think it melted the anode, though I don’t see it. Oh, they say the xenon escaped.
#video about nakst’s Essence OS: “better than #TempleOS” but the video is a 2-hour stream so I don't think I’m going to watch it. He does get it running in QEMU. The streamer is impressed with things like the guy writing his own C-like scripting language interpreter, using his own Tk-like GUI thing for the build configuration (under Linux; it is cool that it has such a thing but unfortunate that it is using a VGA font), that it uses busybox to provide a POSIX environment, etc. He says a translucent overlay saying “Text copied” when he hits ^C is “damn sexy”. Seems to have nice small executables: 15K for a GUI game of 2048, 14K for an IRC client, 74K for the file manager. It uses a “.esx” extension for these. Busybox does run successfully under it, but it’s not succeding in launching any other executables, giving a spurious “Out of memory” error. He is not impressed with the “script console” which gives an nicely formatted error on everything he tries, even the “help” command. He looks at the 2048 game, which is 13K of C++, but in a fairly C-ish style. Seems like drawing is done by handling ES_MSG_PAINT messages in a ProcessApplicationMessage(EsMessageReceive()) loop, like in Win32 or Win16. There’s a hello-world in C. So this guy (#Tsoding?) streamed writing the Game of Life for it without looking at the documentation, just example code. He ran into a lot of hitches like needing to explicitly request redraws. He solicits donations via Bitcoin but also complains about the cryptocurrency fad.
#PDF #interview with John Plant, the Primitive Technology guy, who YouTube had made a millionaire in 02020
#RISC-V vector extension #video by #LaurieWired aimed at super beginners, explaining an #asm example line by line, then walking through it in GDB; apparently the Kendryte Canaan K230 chip supports RVV 1.0. But she doesn’t even mention T-Head, so I’m not sure I can trust her information. Like, her example assembly program doesn’t loop, and I think it needs to loop in case the vector registers on the hardware are less than 256 bits. Like, I think she needs something like blt t2, a3, loop_start to get the vector length agnosticism she’s talking about at the beginning but never explains.
#video about reaching #Argentina for the first time last month, naïve young US couple eating empanadas and visiting El Ateneo and the Plaza de Mayo etc.
40' #video by #Psychogenic-Technologies (Pat Deegan) on designing analog ASIC #electronics #hardware using Tiny Tapeout’s “new analog capabilities”. Basically he’s hacking together a SAR ADC with an 8-stage resistor ladder, although most of that process is omitted; he submitted it to Tiny Tapeout 6 as “WoWA”. I didn’t realize #Tiny-Tapeout had a WebGL GDS viewer. The video has an annoying amount of talking-head filler. He recommends using tinytapeout_analog_vm to get started quickly, and Efabless’s video, “Webinar - Analog schematic capture & simulation with Stefan Schippers”, who wrote #Xschem, which he’s using here, with the open SKY130 PDK. He remapped Magic’s and Xschem’s keys to match Kicad. He says both Kicad and Xschem do simulations in Ngspice. Xschem’s UI for exploring simulation results looks pretty interesting, being able to click on a waveform out of many waveforms on a plot to change which waveforms are displayed in other linked plots. He does a little bit of demo of using Magic, which evidently involves typing Tcl commands in a command window as you use the mouse, and he lays out a two-MOSFET mixer circuit in it, with guard rings and everything, after having designed and simulated it first in Xschem. He says Netgen (?) is a good LVS (layout vs. schematic) checker, even though its errors are hard to understand. He recommends simulating your digital blocks with Verilator.
#AmericAndo #video #vanlife on getting kicked out of a Wal-Mart parking lot in Calgary