no my power supply buck regulator failed …sent 24 volts through that is all i know and let the magic smoke out tried reverse power via gpio pins but no joy … well be a month till i can afford another …however i do have exp on my side to some degree these days, so not real happy…
replaced argon fan with notura 40x40x10
added tall blue heat-sink 2 by 40 pin extender headers
clocks nicely at 2200Mhz without a hicup at between35-42 degs under load some times goes as high as 45 approxx using Ubuntu mate desktop and specs trip points are from 32 degs to 45 degs…at max 100% fan power at 32 degs i start at 55%
code for config.txt
arm_freq=2300
over_voltage=10
gpu=750
still assembling modified perspex case works in progress…rev 1.2 board from mem 4 gig rpi-4 21-04 ubuntu…mate desktop
so when im done i will make the fan wiring with a cut off origanal fan supply cable and neaten to fit with heatshink using the fan connector from the original fan…still a works in progress also to fit the m-4 argon board and usb male to male cable …in place of the usb adapter…
EDIT: … there is a 8mm gap using a hex tapped plastic spacer between the top of the heat-sink and the under side of the fan hat …fan hat needs to be swapped left to right position …it would then be directly above the heat-sink as is it is offset to the right…thoughts of elaborate cabling…came to mind but the temps im seeing a well within the system functioning …but still…with the spacer heights i used…
i would say there would be up to 5-7 ft/lb pressure cannot move the heat sink and looks pretty flush and square to the top matching the cpu…unfortunately the ram chip needs a 2-3 mm copper plate/shim… to accommodate and i dont have any at hand…
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have a look above…running now a rev 1.2 board 4 gig ram and ubuntu of some description…
EDIT 13/05/21
just but in some 10 mm spacers between the fan hat and the heat-sink so as to raise the fan hat a little higher to give some drop space between them for better flow… space…
still a works in progress…adding m-2 sata-usb board still…w.i.p…using origanal usb-3 adapter and an usb-3 ext lead …just removed m2-sata board from case and this is temp placement atm…some pics…
still a wip…!!!
so now i have the usb type-c port initialized just added some code to the config file
lsb -t reruns an active 2dwc port now showing 3 buses yet still am not shure if having the power running via gpio input …
weather i have two ports electrically connected in parallel due to the fact that i have the argon 40 m-2 board which i have removed from the original casing… pics show…no pics of rtc
still working on that not shure if i can plug it directly to the headder or not … as yet…
lsb -t shows only one physical port or bus…yet i have 2 type-c connectors now …connected…
i have since been looking at 21-04 ubuntu which i read the whole config.txt file and found that it is already included in the file to start with…the code to include the usb-c …
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just added pf8653 R.T.C module from h-k wired scl sca 3.3v +tve and ground left out the int terminal fitted a new battery
added code to config.txt
dtoverlay=i2c-rtc,pcf8563
reboot
after reboot set
hwclock -r
hwclock -s
hwclock -w
added hwclock -s to /etc/rc.local file
easy way to set is if you have the web connected at the time of setting up it will write the correct time to the r.t.c.
reboot finally leave sitting for 15 mins apprxx do not connect the web poer unit up
check time with command “date”
or if you prefer hwclock -r
if time is not correct replace battery set time manually write to hwclock and repeat process i did not even use i2c detect…but installed i2c-tools as i was running 20.04.2 ubuntu server at the time i did this…got e more ing done…so i jutyst plugged the r.t.c board onto the headder…no need for wires …it works pin 4 pin… exact match…the h-k r.t.c board … match the 3v3 yellow to the r.t.c module all the rest follow inline the board points to the rear towards the usb ports …etc.etc…using argon 40 m-2 case well pics show i removed the case …kept the boards…etc…etc…
EDIT: i use mate desktop once the r.t.c is set properly you can turn off the ntp service in the time and date settings up the upper right menu of the screen …if not using a gui interface once you set the r.t.c you can turn of the n.t.p service…or the n.t.p server…connection the r.t.c module takes its place,when installed correctly…
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Hmm what`s missing…an rpi-5 match those snappy quad core 2.0 gig boards …
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