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From: Jan Panteltje <alien@comet.invalid>
Newsgroups: sci.electronics.design
Subject: Re: Instead scopes
Date: Fri, 30 Aug 2024 18:22:20 GMT
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On a sunny day (Fri, 30 Aug 2024 07:13:23 -0700) it happened john larkin
<jlarkin_highland_tech> wrote in <1ak3dj9pbeivllh8jk5ke2ani3jid2hl3p@4ax.com>:

>On Fri, 30 Aug 2024 06:47:54 GMT, Jan Panteltje <alien@comet.invalid>
>wrote:
>
>>On a sunny day (Thu, 29 Aug 2024 11:47:42 -0700) it happened john larkin
>><jl@650pot.com> wrote in <pcg1djt6otqheh6vgi9len892jd21g1sn0@4ax.com>:
>>
>>>On Thu, 29 Aug 2024 16:21:21 GMT, Jan Panteltje <alien@comet.invalid>
>>>wrote:
>>>
>>>>On a sunny day (Fri, 30 Aug 2024 00:43:39 +1000) it happened Bill Sloman
>>>><bill.sloman@ieee.org> wrote in <vaq1f2$jdj$1@dont-email.me>:
>>>>
>>>>>It's lot easier and quicker to bread-board a circuit in LTSpice than it 
>>>>>is to wire up a test circuit, but what that means is that you need to 
>>>>>make fewer real circuits and they are a lot more likely to work when tested.
>>>>>
>>>>>That, on it's own, is enough to explain why labs look different today 
>>>>>than they did in the dark ages.
>>>>
>>>>All it explains is boeings falling apart and astronuts ending up stuck at the ISS
>>>>and no moonlanding from the US, not even a probe.
>>>
>>>The ISS and moon landings are super-expensive theatre. Neither
>>>accomplishes anything.
>>>
>>>Boeing and Microsoft have the same problem, bean counter money-mongers
>>>have taken over from engineers.
>>>
>>>>Slimulations are _not_ realty and never will be.
>>>
>>>Spice can be very handy. As Mike says, LT Spice's real function is to
>>>train your instincts.
>>
>>I dunno, much I learned from working with tubes and transistors was by building small circuits and measuring what happened.
>>Sure spice is great for math intensive stuff such as filters.. but you still need to know the basics.
>>These days with chips doing much of the work and limited knowledge what is actually _in_ those chips 
>>it is hard to tell if a real circuit will behave like spice tells you
>>You will still need real testing.
>
>Sure, but if I wake up at 3AM in Truckee, I can Spice an idea and go
>back to bed. 
>
>https://www.youtube.com/watch?v=x6TrbD7-IwU&list=PLlD2eDv5CIe9u7jbKUkZ5xrLLSCrn0z_e

Nice hat!

Not much news there now is it?


>Actually, I have designed useful circuits by randomly fiddling with
>Spice, stupid topologies that turn out to work.

I have used spice a couple of times, mostly out of curiosity.
Last one was in Linux Wine (windows emulator).
There were some problems with those simulations... they were not reality (scoped the stuff)
But maybe it is hard to match so many years of human experience
Having better models of parts is an other requirement.
It _is_ all math and math is by definion a limited descriptopn of reality, VERY limited
reality equations represent...
Insight is what counts.


>>Maybe boeing just spiced their thrusters :-)
>
>SpaceX is having trouble with helium leaks too. Helium is the chemical
>equivalent of slippery eels. It will leak though almost anything, even
>solid metals. If they need an inert gas, why don't they use argon or
>neon or nitrogen?

Yep, I wondered the same thing

Maybe AI will learn.... and be the next thing after spice.
There is an AI test at tomshardware.com,
I asked it the question  "how to speed up my Raspberry"

 https://www.tomshardware.com/news/tomshardware-ai-chatbot#main

The answer was:

-----------
HammerBot:

To make a Raspberry Pi 4 faster, you can overclock it. Here's a step-by-step guide on how to overclock your Raspberry Pi 4 to 2.3 GHz:
                                                                                                                                      
    Ensure Adequate Cooling: Before starting the overclock process, make sure your Raspberry Pi 4 has adequate cooling. Options include:
        Pimoroni Fan Shim                                                                                                               
        52Pi Ice Tower Cooler
                             
    Edit the config.txt File:
        Open the config.txt file for editing in a terminal window on your Pi:
                                                                             
        sudo nano /boot/config.txt                                           
                                  
        Add the following lines to set the CPU and GPU speeds, and provide extra voltage:
                                                                                         
        # Overclock Instructions                                                         
        arm_freq=2300           
        gpu_freq=500 
        over_voltage=14
        force_turbo=1  
                     
    Save and Exit:   
        Press CTRL + X, then Y, and hit Enter to save and exit the file.
                                                                        
    Reboot the Raspberry Pi:                                            
        Reboot your Raspberry Pi to apply the changes:
                                                      
        sudo reboot                                   
                   
    Verify the Overclock:
        After rebooting, open a terminal and use the vcgencmd command to show the current ARM CPU speed:
                                                                                                        
        vcgencmd measure_clock arm                                                                      

For more detailed instructions and considerations, you can refer to the full guide on Tom's Hardware.

Keep in mind that overclocking can invalidate your warranty and may cause instability if not done properly. Ensure you have sufficient cooling to prevent thermal throttling.
------------


Now serching with google works too and I am sure hammerbot uses it,
but still that saved time (if you woke up at 3 AM and wondered...).
Was just a test (not going to try it) but imagine the same for design.

?
Where will it go?