This is a 3A regulator, but I am skeptical. It is a plug-in so you can use a +12,+5 smps with the 5v going directly into the 5v regulator socket.
On Tue, Nov 21, 2023, 9:43 PM Rafael Diniz <
rafael@...> wrote:
Hi Ashhar,
People have different needs, so the faster CPU and GPU would be helpful
to some, especially for DSP and media intensive tasks, eg, for vocoders
based on ML. Also, the I/O is very improved, while PCIe on it is very
good for NVMe usage. I like to play smoke on the water!
: )
Anyway, do you know the limits of the regulator that feeds the Pi? I can
just set the cpu governor to keep the clocks low anyway.
- Rafael
On 11/21/23 14:51, Ashhar Farhan wrote:
> The Pi5 doesn't idle at 5A. It putters along at 1A unless you kick it
> hard and more cores wake up and start playing smoke on the waters.
> There will be little gain, really. The sbitx works just?fine even on
> the rpi zero 2w.
> If you find it radio sluggish, what you need is more RAM, mostly for
> the web and other software.
> - f
>
> On Tue, Nov 21, 2023, 8:15 PM Rafael Diniz <rafael@...> wrote:
>
>? ? ?My Pi 5 did not arrive yet. When it arrives I give an update, but I
>? ? ?don't see why it would not work. Are you sure the regulator will
>? ? ?not be
>? ? ?enough? Can you help me find it in the circuit?
>
>? ? ?- Rafael
>
>? ? ?On 11/21/23 14:22, Dave, N1AI wrote:
>? ? ?> I have learned more since writing this, and based on a question
>? ? ?on the
>? ? ?> FB sbitx group I will add some updated thoughts about the issues of
>? ? ?> using Pi 5 in sbitx.
>? ? ?>
>? ? ?> I would say there are three areas of concern: power, heat and
>? ? ?software.
>? ? ?> Power: Pi 4's standard PSU is a 15 watt device, Pi 5 wants 25
>? ? ?watts.
>? ? ?> The sbitx internal regulator that converts 12V to 5V won't cope,
>? ? ?from
>? ? ?> what I have been told.? The power is delivered from the radio to
>? ? ?the
>? ? ?> Pi on its GPIO pins, and I worry that upping it from 3A to 5A
>? ? ?will go
>? ? ?> beyond the pin's limits.? Then there are also likely knock-on
>? ? ?effects
>? ? ?> due to drawing more energy from the battery.
>? ? ?> Heat: All that power gets converted to heat one way or another.?
>? ? ?The
>? ? ?> Pi provides CPU and GPU temperature readings, those will need to be
>? ? ?> monitored and if they get hot, something must be done to cool
>? ? ?them.? I
>? ? ?> think there is room for the Pi 5 Active Cooler if a GPIO
>? ? ?extender is
>? ? ?> used to create a bit more room for air flow, but then the holes
>? ? ?in the
>? ? ?> panel will no longer line up.
>? ? ?> Software:? The Pi 5 needs Bookworm / Debian 12, the image being
>? ? ?> produced is Buster / Debian 10 which is quite old.? ?The image
>? ? ?being
>? ? ?> produced uses 32-bit mode whereas the default Pi 5 image is 64
>? ? ?bits.
>? ? ?> I found enough help on this group to get to Debian 11 / Bullseye
>? ? ?in 64
>? ? ?> bit mode.? I haven't ventured further than that so far.
>? ? ?> Even though I got a Pi 5, I am finding a lot more things to work on
>? ? ?> with the current hardware/software so I've kind of put Pi 5 for
>? ? ?sbitx
>? ? ?> on hold for now.
>? ? ?> --
>? ? ?> Regards,
>? ? ?> Dave, N1AI
>? ? ?>
>
>
>
>
>
>
