Raspberry Pi Forums

graysky

jj_0 wrote: ↑
Mon Sep 02, 2019 10:50 am
Or run the script as a systemd service at startup.

graysky wrote: ↑
Mon Sep 02, 2019 10:47 am
You could also optionally make a systemd timer and unit to run your script to avoid pulling down more dependencies (cron).

There's an echo in here

graysky

How are you triggering the script to run? Why not use cron to run @reboot and at some regular interval? What distro are you using? Raspbian? Likely you're using systemd as your init system so google journalctl. You could also optionally make a systemd timer and unit to run your script to avoid pulli...

graysky

One of my 4s has the fan that came with this case. More or less silent running on 3.3V.

graysky

Just out of interest, anyone got numbers for the latest Raspbian as a zip and as xz? Meaning the compression differences? As an aside, if a format switch is considered, I would recommend zst which benefits from multi-threaded compression, and compression that will arrive at the same checksum regard...

graysky

Cisco SG100-16 works.

graysky

ProDigit wrote: ↑
Sun Aug 18, 2019 7:10 pm
I just came here to see an exploded CPU.
But now I'm disappointed

Me too!

graysky

cjan wrote: ↑
Sat Aug 17, 2019 11:05 am
now had new image its own, but still armv7h kernel.
Code: Select all
wget http://os.archlinuxarm.org/os/ArchLinuxARM-rpi-4-latest.tar.gz

Yes, due to: https://github.com/raspberrypi/linux/is ... -522204095

graysky

Not in my experience. /boot/cmdline.txt and /etc/fstab on the new partition is all I've ever had to change. No, it's hardcoded: On Arch ARM: https://github.com/archlinuxarm/PKGBUILDs/blob/master/core/linux-raspberrypi4/config#L517 On Raspbian: https://github.com/raspberrypi/linux/blob/rpi-4.19.y/ar...

graysky

Tried vim?

graysky

I think there is a kernel parameter you need to change as well.

graysky

Don't think so natively but you can capture the temp in C and just convert to F.

graysky

jfabernathy wrote: ↑
Thu Aug 15, 2019 6:19 pm
Thanks for the information. So it looks like the fan connections to 5 or 3.3 is the same for RP4b and RP3b+?

I believe the pinout is identical: https://www.raspberrypi.org/documentation/usage/gpio/

graysky

They are there to help delineate different file types.

https://lmgtfy.com/?q=ls+color+meaning

graysky

Same. Compiling the linux kernel on the Pi4 without cooling causes temps >80C. With cooling on either 3.3V or 5V, temps are under 55C and under the throttle point. 3.3V is definitely quieter than 5V. At least 1 vendor (pic is right off amazon) shows either: https://i.postimg.cc/mrt01byh/fick-85.jpg ...

graysky

You are paying for a commercial VPN provider and you want the Pi to use it as well? Just install OpenVPN on the pi, copy your config over and run it. I don't know Raspbian, but on Arch (Arch ARM): https://wiki.archlinux.org/index.php/Op ... hird_party

graysky

Syntax is key. I wrote a scirpt that helps: https://github.com/graysky2/ovpngen

graysky

If you can connect over SSH just tunnel the traffic.

Code: Select all

ssh user@domain.com -L 5900:localhost:5900

graysky

LXC works great. I have a 2 GB RPi4 running a lxc serving up openvpn, wireguard, and pihole each in their own lxc container. See: https://github.com/graysky2/lxc-service-snapshots

graysky

Mandrewpi wrote: ↑
Mon Aug 05, 2019 10:11 pm
I just use those Velcro Command strips, or zipties because everyone knows that zipties are the most professional option .

Twist ties, zip ties, it's all good :p

graysky

Gavinmc42 wrote: ↑
Wed Aug 07, 2019 8:17 am
Is that 32 or 64bit?
It says rpi2, so I assume it is the old 32bit Pi2.

The image is technically armv7h and it runs just fine.

graysky

...meanwhile I just used the twist ties that came with the HDMI video cable to make a crude picture hanger by just threaded them through two of the four screw-holes in the RPi4's fab. A 3rd one bridging them together twisted around a large staple I pounded into the subfloor where this thing hangs ab...

graysky

Thanks for the replies. I used a drill bit as a crude dremel in the past but wanted something that is pre-built. I will look at the one you posted, wh7qq. Seems odd that the official case lacks them.

graysky

I am finding it difficult to find a case that has pre-fabbed cuts in the base of it to allow for a vertical or wall mount application. The official case looks like it just has feet. Anyone?

graysky

After enabling the schedutil governor, I noticed the CPU frequency on my RPi4 (and RPi3B+) does not deviate from the max even when the machine is idle (ie zero load). Example, Pi4 sitting idle for 1/2 hour: % cat /sys/devices/system/cpu/cpufreq/policy0/scaling_governor schedutil % uptime 17:36:13 up...

graysky

I added the following lines to /boot/config.txt (following the example from Raspbian) and it worked upon a reboot.

Code: Select all

[pi4]
# Enable DRM VC4 V3D driver on top of the dispmanx display stack
dtoverlay=vc4-fkms-v3d
max_framebuffers=2

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