buescher

20 ms·

241.
by buescher 2y ago
Jump starters. Some of the early ones, including at least one highly ranked on a review site, had the jumper cable socket directly connected to the battery. Wild West stuff. Get a UL listed one.
242.
by buescher 2y ago
The Macy's link only has the "snap circuits" line which is not exactly the same thing. Might be better for all I know. Here is the kind of kit we're talking about: https://www.amazon.com/Elenco-Electron
243.
by buescher 2y ago
Elenco still makes them, but yeah, you can't buy them at a Radio Shack around the corner anymore.
244.
by buescher 2y ago
It's an elegant fix that adds nothing.
245.
by buescher 2y ago
Yeah, also what GP doesn't get is that you can do everything right and with the best intentions, get all the clearances in the world, and still get sued, and still lose. These decisions are about risk preference, and the risk toleranc
246.
by buescher 2y ago
That's not a nice way to say it - but it's true that startups don't have time or money to go through detailed legal clearances. That's for medium size companies with incumbent advantage, cash, and plenty to lose in a l
247.
by buescher 2y ago
Alrighty then. "a current of up to 1 volt". Any science or engineering journalist, even at MIT News level, could get that wrong, but not all of them. They should have better fact-checking. Neat application though. Obviously, do
248.
by buescher 2y ago
Ah, yes, an article about deals with the devil should be straight to the point for the effortless efficiency that only the best bureaucracy can provide. As I tell my team, "bottom line up front, folks!". I hope I have understood
249.
by buescher 2y ago
Contrast to this: https://philip.greenspun.com/seia/writeup
250.
by buescher 2y ago
A schematic is a drawing, not source code. Of course you're going to want to print it out and mark up the paper. You're making a severe category error. There is a visual language for communicating design intent in schematics t
251.
by buescher 2y ago
That's fine if you're the only person that will ever use the schematic. As the kids say, "you do you". But a schematic for a product has a life beyond your desk - it will be used by technicians, test engineers, firmwar
252.
by buescher 2y ago
Thanks for posting this. PyBAMM is really slick. I first learned about it from a webinar on the competing Julia package. I have to ask though, how many organizations are really designing their own cells for new products? And how much vali
253.
by buescher 2y ago
You’re right. The source is at https://github.com/unclebob/fitnesse
254.
by buescher 2y ago
It depends on what you need. But you should start by looking at Keithley's SourceMeter "source measure units" and competing instruments from Keysight and Rohde & Schwartz. There are even specific instruments in this vei
255.
by buescher 2y ago
I think the aspirations of the agile manifesto are great, but basically everyone involved in it was an enterprise software methodology consultant. I forget who the exception was; someone will remind me.
256.
by buescher 2y ago
He’s got a GitHub. This seems to be the most notable thing: https://github.com/unclebob/fitnessedotorg
257.
by buescher 2y ago
if you really want to get them riled, spell it H.A.M.
258.
by buescher 2y ago
The other technique that comes in handy in that kind of situation, if you have multiple power/voltage/current domains that require spacing or other isolation from each other, or multiple ground references, is an isolation or insul
259.
by buescher 2y ago
Heh. It figures. Sometimes when I see things like that I wonder if it's featherbedding and gatekeeping. If it looks too straightforward, people might not think what you do is very hard. See the schematic discussion elsewhere in thi
260.
by buescher 2y ago
I haven't worked in automotive. And I'm not a strong advocate of exhaustive model-driven design like what's shown at that link. But it's worth looking at. Generally if you have a state machine or state chart with more
261.
by buescher 2y ago
All good points. By the way, yes, if you have one peripheral device on an i2c bus, and your design is small enough that you're drawing the device on the same page as your microcontroller, you should make the connection explicit. My t
262.
by buescher 2y ago
You're welcome, and yeah, that is the statechart. It's actually at the low zoomed-in level. That's the controller at the heart of the example. A lot of the diagrams in the article are higher-level, not sub-charts. I am n
263.
by buescher 2y ago
They're amazing. And - you can run a PC emulator on an ESP32. Sure, you need the fancy ram. OK. And then people will tell me an ESP32 can't do things that people definitely were doing on bare-bones PCs in the eighties.
264.
by buescher 2y ago
Also, part of the style seems to be to contort any actual schematic to fit in the box. I like to ask "if you wouldn't put it on its own page so you could draw it clearly, why did you draw a box around it?".
265.
by buescher 2y ago
I had an intern do something similar with an electromechanical machine. I'd all but written the equations out for him but he found drawing it out in Simulink in the most fundamental, primitive blocks to help him understand what was go
266.
by buescher 2y ago
This is really crisp work and nice to see. Before the Zynq era I worked with some designs that used a DSP or StrongARM along with a medium-sized FPGA, where the FPGA would be both the glue logic for RAM as well as custom peripherals, but I
267.
by buescher 2y ago
Also S1000-2 is not rated/controlled past 1GHz. It shouldn't vary that much so for small runs the risk is minimal. But for volume production that's exactly the sort of thing you never want to have to investigate in hindsigh
268.
by buescher 2y ago
I keep running into that also. It's like the common mental model of a microcontroller froze around Y2K as a sort of headless VIC-20. I had an FAE , and a good one, from a major supplier tell me "you can't implement a filte
269.
by buescher 2y ago
Sure, that's just one use case. And logs can be useful for history as well as current state. But I think it's the mode shift to "do I set a breakpoint here, and then inspect the program state" as opposed to just contin
270.
by buescher 2y ago
Programmers just don't like switching between representations - it's the same reason that "printf debugging" will still be widespread after all of us are gone.

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