thanks, yes.
https://linuxhint.com/raspberry_pi_temperature_monitor/ pretties this up a bit.
Search found 129 matches
- Fri Aug 16, 2019 3:26 pm
- Forum: General discussion
- Topic: Pi4 Cooling
- Replies: 116
- Views: 19271
- Fri Aug 16, 2019 2:34 pm
- Forum: General discussion
- Topic: Pi4 Cooling
- Replies: 116
- Views: 19271
Re: Pi4 Cooling
A fully wired rpi 4 doesn't hang (other than from all the wires).
With Raspberry pi kbd as well, there's little room to hang it anywhere.
I settled on a fan and it's working.
Is there a command line (bash) tool I can use to monitor the temp please?
With Raspberry pi kbd as well, there's little room to hang it anywhere.
I settled on a fan and it's working.
Is there a command line (bash) tool I can use to monitor the temp please?
- Mon Aug 12, 2019 5:39 pm
- Forum: Troubleshooting
- Topic: rpi 4 + sense hat, mechanical assembly
- Replies: 3
- Views: 346
Re: rpi 4 + sense hat, mechanical assembly
Yep, that worked.
https://flic.kr/s/aHsmG4HTF1
Once I'd got my head around the 180 shift
Much neater.
https://flic.kr/s/aHsmG4HTF1
Once I'd got my head around the 180 shift

Much neater.
- Mon Aug 12, 2019 3:27 pm
- Forum: Troubleshooting
- Topic: rpi 4 + sense hat, mechanical assembly
- Replies: 3
- Views: 346
Re: rpi 4 + sense hat, mechanical assembly
Looking at your picture if you turned both plugs round the cable would come out on the outside, you could then dismantle one of the plugs and shorten the cable so as to reduce the spare cable left hanging out side the pi. the cable would then follow the path shown by the yellow line https://i.imgur...
- Mon Aug 12, 2019 11:55 am
- Forum: Troubleshooting
- Topic: rpi 4 + sense hat, mechanical assembly
- Replies: 3
- Views: 346
rpi 4 + sense hat, mechanical assembly
Hearing of the heat issues I added a fan. 5V using usb. Which necessitated stand offs, and ribbon cable. Which meant a mounting system (styrene, 2mm). Result is not pretty. It runs cool and works. Ribbon is M-F, oddly the connectors don't fit in between the stand offs - pcb holes too tight (Eben?). ...
- Sun Aug 11, 2019 12:11 pm
- Forum: HATs and other add-ons
- Topic: RPI 4 with sense hat
- Replies: 3
- Views: 2304
Re: RPI 4 with sense hat
I have a sense hat mounted to an A+. I put a proto hat mounted on a stacking header between the Pi and sense hat and my temps then read normal. Close enough to normal ambient for me anyway. That pi sits upright with the GPIO header on the bottom to let the hot air escape easily. No case. I had some...
- Fri Aug 09, 2019 2:17 pm
- Forum: HATs and other add-ons
- Topic: RPI 4 with sense hat
- Replies: 3
- Views: 2304
RPI 4 with sense hat
I bought the RPI, liked the look of the sense hat and bought it, before finding about the heat issue. Last few days spent finding a way of cooling, with a hat 'mounted'. Parts on order. 1. Various stand off's, 2.5mm 2. NF-A4x10 5v 1" fan, driven from ob usb. 3. M-F 40w ribbon (rt angle fold to ...
- Fri Aug 09, 2019 1:14 pm
- Forum: Astro Pi
- Topic: Best Ribbon Cable for Sense Hat?
- Replies: 11
- Views: 16911
Re: Best Ribbon Cable for Sense Hat?
https://www.dominicsayers.com/sense-hat/ Seems quite logical, unless you want the sense hat on top of the rpi - not good for an rpi 4. Purchased. Mounted RPI 4, fan (usb powered), sense hat. Ribbon 'stretches' the standoff posts, misaligns hat! https://drive.google.com/file/d/1A6KNR_sahRRIGlrrwUmJT...
- Wed Aug 07, 2019 12:22 pm
- Forum: General discussion
- Topic: Pi4 Cooling
- Replies: 116
- Views: 19271
Re: Pi4 Cooling
The conflict info came from Pimoroni, so I guess I must accept it.
- Wed Aug 07, 2019 11:57 am
- Forum: General discussion
- Topic: Pi4 Cooling
- Replies: 116
- Views: 19271
Re: Pi4 Cooling
There other cases on Aliexpress which show the fan wires connected between 5V and 3.3V GPIO pins too. I don't think that's a good idea. I guess whoever produced the images just plugged them in at random. Not nice - Is GPIO the only place we can tap 5v on the board? Imples @rpi only ever expected on...
- Wed Aug 07, 2019 11:51 am
- Forum: General discussion
- Topic: Pi4 Cooling
- Replies: 116
- Views: 19271
Re: Pi4 Cooling
Is there a fan powered by a.n.other means than GPIO? One of the many aluminium cases on Aliexpress shows fan wires connected to the POE header pins. Presumably two of these pins are connected to 5V and Ground. No idea which, or if you can really power a fan from them though. https://www.aliexpress....
- Wed Aug 07, 2019 11:47 am
- Forum: General discussion
- Topic: Pi4 Cooling
- Replies: 116
- Views: 19271
Re: Pi4 Cooling, fan not powered from GPIO?
Fanshim looks pretty neat. Are the GPIO pins still usable 'above' the n pins used by the fan please? A bit cockeyed, but still usable? It depends on what you mean by "usable". They're certainly accessible - the shim is very thin and is not soldered. You could connect to the pins with a 40...
- Tue Aug 06, 2019 2:51 pm
- Forum: General discussion
- Topic: Pi4 Cooling
- Replies: 116
- Views: 19271
Re: Pi4 Cooling, fan not powered from GPIO?
Fanshim looks pretty neat. Are the GPIO pins still usable 'above' the n pins used by the fan please?
A bit cockeyed, but still usable?
Is there a fan powered by a.n.other means than GPIO?
A bit cockeyed, but still usable?
Is there a fan powered by a.n.other means than GPIO?
- Mon Aug 05, 2019 6:37 pm
- Forum: General discussion
- Topic: Pi4 Cooling
- Replies: 116
- Views: 19271
Re: Pi4 Cooling
Fan SHIM our favourite pirates are selling makes temperature under control at all times. After installing it I haven't seen it going over 49ºC at any point. And - it is solderless installation - so no need to 'dedicate' PI to run with that particular shim. Alternative (from my perspective) is what ...
- Mon Jun 11, 2012 2:53 pm
- Forum: Advanced users
- Topic: recursion... in asm?
- Replies: 2
- Views: 2325
recursion... in asm?
Tail recursion, in assembler?
E.g. given...
What might the asm look like?
Any pecularities or is is straightforward?
Not something I'd thought of before.
TIA
E.g. given...
Code: Select all
def mymod(n):
if (n < 10):
return n
return mymod(n - 10)
Any pecularities or is is straightforward?
Not something I'd thought of before.
TIA
- Mon Jun 11, 2012 11:21 am
- Forum: Advanced users
- Topic: asm printf?
- Replies: 40
- Views: 8172
Re: asm printf?
Thanks rurwin.
input:
space 96,0
ldr r1,=input
mov r2, #96
mov r0, 0
mov r7, #3
svc #0
ldr r1, =input
mov r2, r0
bl print @ subr to print
Works nicely.
Dave
input:
space 96,0
ldr r1,=input
mov r2, #96
mov r0, 0
mov r7, #3
svc #0
ldr r1, =input
mov r2, r0
bl print @ subr to print
Works nicely.
Dave
- Mon Jun 11, 2012 9:50 am
- Forum: Advanced users
- Topic: asm printf?
- Replies: 40
- Views: 8172
Re: asm printf?
Taking this a little further. http://asm.sourceforge.net/syscall.html shows the kernel etc calls, which relate cleanly to the definitions at http://lxr.free-electrons.com/source/arch/arm/include/asm/unistd.h?v=3.1;a=arm E.g 3. sys_read Syntax: ssize_t sys_read(unsigned int fd, char * buf, size_t cou...
- Sat Jun 09, 2012 8:41 am
- Forum: Advanced users
- Topic: Where to report bugs?
- Replies: 1
- Views: 1728
- Sat Jun 09, 2012 8:34 am
- Forum: Advanced users
- Topic: Where to report bugs?
- Replies: 1
- Views: 1728
Where to report bugs?
Just running gas and an error came up
Internal error:
Assertion failure in make_mapping_symbol at ../../gas/config/tc-arm.c line 2485
Please report this bug
the line in question is
.bss right at the end of the program
.... Then no uri where I can report it?
Any suggestions pls?
Internal error:
Assertion failure in make_mapping_symbol at ../../gas/config/tc-arm.c line 2485
Please report this bug
the line in question is
.bss right at the end of the program
.... Then no uri where I can report it?
Any suggestions pls?
- Thu Jun 07, 2012 1:55 pm
- Forum: Troubleshooting
- Topic: OK LED off most of the time following rpi-update
- Replies: 20
- Views: 4785
Re: OK LED off most of the time following rpi-update
Worked an hour ago?rurwin wrote:http://www.raspberrypi.org/phpBB3/viewt ... =26&t=6857
Summary: Don't do an RPiUpdate at the moment; it seems to be broken.
Dave
- Thu Jun 07, 2012 1:23 pm
- Forum: Troubleshooting
- Topic: OK LED off most of the time following rpi-update
- Replies: 20
- Views: 4785
Re: OK LED off most of the time following rpi-update
No problem today.texy wrote:
Last night the ca-certificate failed to download (or be found, one or t'other). Is this resolved now?
Texy
Dave
- Thu Jun 07, 2012 11:18 am
- Forum: Troubleshooting
- Topic: OK LED off most of the time following rpi-update
- Replies: 20
- Views: 4785
Re: OK LED off most of the time following rpi-update
OK, thanks Nick
- Thu Jun 07, 2012 11:09 am
- Forum: Troubleshooting
- Topic: OK LED off most of the time following rpi-update
- Replies: 20
- Views: 4785
Re: OK LED off most of the time following rpi-update
Having run it I get
Using SoftFP libraries
/opt/vc/sbin/vcfiled: error while loading shared libraries: libvchiq_arm.so: cannot open shared object file: No such file or directory?
Suggestions please?
Using SoftFP libraries
/opt/vc/sbin/vcfiled: error while loading shared libraries: libvchiq_arm.so: cannot open shared object file: No such file or directory?
Suggestions please?
- Thu Jun 07, 2012 11:03 am
- Forum: Troubleshooting
- Topic: OK LED off most of the time following rpi-update
- Replies: 20
- Views: 4785
Re: OK LED off most of the time following rpi-update
Needs ca-certificates and git-core too!NickT wrote:It's way of keeping your Pi up to date with the very latest firmware/kernel patches. Best explained heredpawson wrote:Someone tell what rpi-update is please?
Dave
https://github.com/Hexxeh/rpi-update
Thanks.
- Thu Jun 07, 2012 10:36 am
- Forum: Troubleshooting
- Topic: OK LED off most of the time following rpi-update
- Replies: 20
- Views: 4785
Re: OK LED off most of the time following rpi-update
Someone tell what rpi-update is please?
Dave
Dave