[chbot] Playing with a Pi 400.

Richard Jones richard.jones.1952 at gmail.com
Sun Jan 24 10:51:58 GMT 2021


Mike,
With regards to your drum coding. Have you looked at sonic pi? It produces
some remarkable music effects in real time.
Richard


On Sun, 24 Jan 2021, 23:22 Mike Field, <hamster at snap.net.nz> wrote:

> The Pi's user experience is very basic. It doesn't feel that snappy, but
> browsers work fine. This is most likely due to having a pretty basic video
> GPU.
>
> Currently I'm working on a drum machine as a micro-controller project, and
> have a proof of concept C program running on Linux.
>
> "touch *.c; time make drummer" takes 0.47s on my i5-1035G1 laptop. It
> takes 0.53s on the Raspberry Pi 400.
>
> Rendering around 5 minutes of drum loops (a 55MB WAV file) takes 1.79s on
> the laptop and 1.89s on the Pi.
>
> So for none-demanding programming the performance is very close to a
> $1,500 laptop, (except the Pi400 has only 4GB, not 8GB RAM). Not bad for
> under NZ$200 for Pi400+SSD.
>
> Mike
>
>
> On 24/01/2021 10:26 pm, Andrew Starr wrote:
>
> Hi Richard,
>
> So you're happy with the RPi4 as your daily use machine? I'm seriously
> considering this to replace my aging i3 All-in-one. I assume you went with
> the 8Gb version?
>
> Anyone else's experience (Mike?) with the RPi4 as a daily use desktop
> replacement also welcome.
>
> Cheers
>
> Andrew
>
>
> On 21/01/21 2:33 pm, Richard Jones wrote:
>
> I use RPi 4 with dual monitors as my main desktop machine daily. I use a
> Samsung Portable SSD T5 500GB, bought from PBtech just about as soon as
> RPi4 came out. The  was possibly not the cheapest solution but hardware
> wise its plug and play and readily available. I reckoned that if I ever
> needed more space then SSD's would have reduced in price. Creating and
> enabling a swap partition prevents the pi locking up when Firefox or
> Chromium have too many active tabs. The SSD is just used as my home drive
> as USB booting from SSD arrived after I had my setup all working. Let me
> know if you would like some measurements done.
>
> Looking at the PBTech web site it looks as though the T5 has been replaced
> by T7.
>
> I moved to Pi after blowing up my laptop motherboard using a new chinese
> usb supply on a usb connected arduino nano. The supply was well designed
> but was manufactured with a sticky foam pad bridging the safety barrier.
> Consequently I bought a new laptop motherboard, rpi, and a HV insulation
> tester! If I'm ever daft enough to repeat the mistake I'm hoping to just
> replace the Pi.
>
> HTH
>
> Richard Jones
>
> On Thu, Jan 21, 2021 at 8:49 AM Quentin McDonald <dqmcdonald at gmail.com>
> wrote:
>
>> Hi Mike,
>>
>> Would you mind letting us know what SSD you ended up getting and from
>> where? I've looked into this briefly and I couldn't seem to figure out how
>> to find one of the Pi compatible ones known to work.
>>
>> Thanks,
>>
>> Quentin
>>
>> On Wed, Jan 20, 2021 at 5:14 PM hamster <hamster at snap.net.nz> wrote:
>>
>>> Just saw an article on reverse engineering of vaccines that may be of
>>> interest some here.
>>>
>>>
>>> https://berthub.eu/articles/posts/reverse-engineering-source-code-of-the-biontech-pfizer-vaccine/
>>>
>>> And for something more aligned to the list, I replaced my Windows
>>> Laptop after I discovered my Raspberry Pi 400 compiled the same C source in
>>> ~40% of the time. So I went to the New Years sales and $1100 later the
>>> Raspberry Pi is still quicker.
>>>
>>> To reward it for its efforts I now have the Pi booting from a $69 USB3
>>> SSD rather than usual uSD card. It now reads disk at 300MB/s.
>>>
>>> It is much more capable than expected.
>>>
>>> Mike
>>>
>>>
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