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Werner

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Posts posted by Werner

    Powering SBC from in-wall charger?

    in SD card and PSU issues

    Posted

    Will most likely but there is no guarantee.

     

    The general issue with such PSUs is that they are designed to deliver a constant current for charging purpose. However when plugging in devices like SBCs their input current changes depending on the load. If the output capacitance of the PSU is too small it might not be able to compensate and the voltage drops which then leads to unpredictable behaviour.

    Ripple voltage could also become an issue if the PSU is VERY cheap.

     

    Just try'n'n error. Plug 'em in, run a couple of stress tests and check if anything weird occurs. Of not you are good to go.

    0

    Boredom wins: Nanopi R4S custom fan hat

    in Off-topic

    Posted

    Slight modifications mostly for optical satisfaction.

     

    Whoever wants to give it a shot, either milled or printed, I attached the current DXF.

     

    (btw. gross in German means big. The reason is that initially I started with a smaller version utilizing the smaller holes on the PCB. Though at least for me I could not find a proper source for bolts and nuts so small I gone ahead and used the bigger holes for screws up to M2 and maybe even M2.5 with a bit of squeezing. I included the smaller holes anyways so it is easier to simply remove the extended part.)

     

    The cheapest commercial way to make this things realitiy I could find was https://www.schaeffer-ag.de/

    They can mill it professionally from aluminum or acryl glass for close to 30€ including tax and shipping in Germany.

     

    r4s_gross.DXF

    0

    Boredom wins: Nanopi R4S custom fan hat

    in Off-topic

    Posted

    Mostly because I was bored and for self-educational purpose I desigend a custom fan hat for the Nanopi R4S.

    Planned to mill it from 2mm aluminum.

     

    As reference I created a heavily simplified version of the board (4GB version) using the provided 2D drawing from Friendlyarm.

     

    Fan: https://www.amazon.de/dp/B071JN6HKM?ref=ppx_pop_mob_ap_share

    Heat sink: https://www.aliexpress.com/i/4000107291369.html

    Bolts and nuts: Whatever fits... M2

     

     

    grafik.png

    grafik.png

    Baugr1.mkv

    2

    Orange Pi Zero (H2+/H3) TV Out on Mainline, WORKING

    in Allwinner sunxi

    Posted

    6 hours ago, Cesar Berci said:

    Hi,

     

    I have tried to use this patch with the current version and get this message from compiler:

     

    [ warn ] * [c] z01_h3-tve-11.patch [ failed ]
     

    The path is in userpatches/kernel/sunxi-current

     

     

    Quote

    +++ linux-4.14.y-tve/arch/arm/boot/dts/overlay/Makefile 2018-02-20 20:07:56.193893833 +0800

    sunxi-current is 5.10.y atm. So patch might either have been upstreamed already or needs adjustments to work again. Check output/debug folder for further details.

    0

    No HDD1 when using M.2 SATA on SHARED port.

    in Rockchip

    Posted

    On 1/16/2021 at 3:41 PM, allen--smithee said:

    The interior is 10.5cm wide and 16cm high and 15.5 deep and a commercial ssd disk has a dimension of 10cm x 7cm x 0.6cm with case.

    Create a new backplane with 4 x Jmb575 5 Sata ports spaced 1cm each you can plug 20 SDD (up to 80 TB = 20x 4TB) on the Helios64 and put your cache on M.2 Port Sata1 :),

    and waiting for new SoC 4-8 line PCIe v.3 (RK3399 have 4 line v2.1) :).

     

     

    Might also be worth discovering the idea about an external addon case for further 3,5" harddrives...

    @gprovost you heard what we want: Go big or go home :lol:

    1
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