• Pi4, cases, fans and firmware.

    From Henri Derksen@2:280/1208 to A. Dumas on Tue Sep 1 03:50:00 2020
    Hello,

    druck <news@druck.org.uk> wrote:
    I had to remove the fanshim because the tiny fans kept failing, which is
    a shame as I liked the temperature dependent colour LED, and contributed
    an enhancement to the code on github.

    If I set the fanshim up to go on and off at approximately 25% duty cycle
    it would maintain an average of 55C idle, if on continuously then around
    45C idle. I preferred having it on all the time for the lower
    temperatures, and in the end the fans lasted about 3-4 months regardless
    of the usage pattern. I've not heard anyone else have issues, so god
    knows why mine don't last.

    It's a cheap thing (if not quite by monetary value), probably not built
    to
    last. I guess most people don't use it continuously, because a) they
    turn
    off their Pi but also b) the default setting of the fanshim software,
    like
    you say, is to have it go on and off.

    May be David Ruck had two problems he did not remark,
    static electricity or too much heat when soldering?
    Or his RoHS Pi is poisoned by lead (solder ;-).

    Henri.

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    * Origin: Connectivity is the Future; UniCornBBS.Demon.nl (2:280/1208)
  • From Henri Derksen@2:280/1208 to druck on Tue Sep 1 04:00:00 2020
    Hello David,

    On 26/08/2020 16:34, Henri Derksen wrote:
    On Wed, 26 Aug 2020 14:57:28 +0100, Derek.Moody wrote:
    Mine (Pi 2B 512MB)

    Are you sure about that memory size?
    Only the old first Pi 1B and the Pi Zero(W) both have 512 MB,
    all others are 1 GB

    Not forgetting the very original Model B which only has 256MB.

    Yes, that was the 2012 version.
    In NL all members of the Dutch Big Ben computer Club got a Pi Model B
    the 2013 512 MB i.e. second version for the 30th anniversaty of their existance/jubilee.
    Many liked that nice idea of a computer club giving all their members a
    new computer ;-).

    That one has spent the last two years in the shed and has survived
    ambient temperatures from -5.3C to 51.5C (CPU temp 19.6C and 72.8C).

    So you also have good luck, not only bad.
    On average you may not complain, I think ;-).
    My second Pi 1B from the same year 2013 is now running !RosBink for FidoNet since October 2018 without a case 24/7 now on his second microSDcard.

    Henri.

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    * Origin: Connectivity is the Future; UniCornBBS.Demon.nl (2:280/1208)