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by dustnbone
Tue Jun 23, 2020 11:53 pm
Forum: Troubleshooting
Topic: [Not getting my full Gigabit internet speed on RPI 4b 4GB]
Replies: 42
Views: 3619

Re: [Not getting my full Gigabit internet speed on RPI 4b 4GB]

I generally test these things with a real world transfer. Upload a big file to Dropbox or Google Drive, etc. Use a storage device that you've verified can sustain well over the speed you're testing for, monitor CPU/RAM usage during the transfer to rule those out as bottlenecks. Synthetic benchmarks ...
by dustnbone
Tue Jun 23, 2020 10:33 pm
Forum: General discussion
Topic: Copy and Paste not working in Putty
Replies: 6
Views: 362

Re: Copy and Paste not working in Putty

In comparison to some of the graphical SSH clients available for Linux, Putty is kind of a piece of crap.

Even just running ssh in an lxterminal session I find to be way more productive than Putty.
by dustnbone
Tue Jun 23, 2020 6:33 pm
Forum: Troubleshooting
Topic: Fixing incorrect undervoltage warnings
Replies: 37
Views: 1704

Re: Fixing incorrect undervoltage warnings

Just because you're measuring ample voltage at the supply rail doesn't mean there's the same voltage getting into the Pi itself under load.

Every single undervolt warning I've ever had on a Pi was due to bad connections/insufficient conductors.
by dustnbone
Mon Jun 22, 2020 7:56 pm
Forum: General discussion
Topic: Pi-0-w Powerbank PSU/UPS candidate...
Replies: 8
Views: 473

Re: Pi-0-w Powerbank PSU/UPS candidate...

Connecting multiple cells in parallel is fine, as long as the voltages are the same or close (within .05Vish) when they're connected to avoid high amounts of uncontrolled current flowing from the low one to the high one. Once they're connected in parallel there's no need to worry about balancing bet...
by dustnbone
Sun Jun 21, 2020 12:56 am
Forum: FreeBSD
Topic: FreeBSD on raspberry pi 4?
Replies: 9
Views: 4051

Re: FreeBSD on raspberry pi 4?

FreeBSD boot images available here. Also some informations.

https://wiki.freebsd.org/arm/Raspberry%20Pi
by dustnbone
Sat Jun 20, 2020 2:05 am
Forum: Graphics, sound and multimedia
Topic: Outdoor audio and high wattage speakers
Replies: 15
Views: 4287

Re: Outdoor audio and high wattage speakers

If you're not stuck with the Pi form factor, there are many wonderful audio amplifiers out there in the used market.

For the price of the Amp2 you could buy something on craigslist that will happily blow those speakers to kingdom come.
by dustnbone
Fri Jun 19, 2020 9:15 pm
Forum: Troubleshooting
Topic: None fuctional USB Ports
Replies: 6
Views: 272

Re: None fuctional USB Ports

It looks like a short on the USB power bus to me as well. Either on the Pi PCB itself, inside one of the USB ports or in a cable/device plugged into them.

A multimeter resistance test should be able to narrow it down.
by dustnbone
Thu Jun 18, 2020 6:33 pm
Forum: General discussion
Topic: Would this running on Raspberry Pi 4?
Replies: 3
Views: 545

Re: Would this running on Raspberry Pi 4?

Since enforcing copyright law isn't my job, yes you can play 4K x265 on the Pi4 but not with omxplayer.

Kodi can do it and I believe also the VLC included with Raspbian. If the sole purpose of the Pi is to play media, I recommend LibreELEC.
by dustnbone
Thu Jun 18, 2020 10:08 am
Forum: General discussion
Topic: Pi alternative that supports DisplayPort Alt Mode and Power Delivery over USB-C
Replies: 9
Views: 738

Re: Pi alternative that supports DisplayPort Alt Mode and Power Delivery over USB-C

Use the HDMI for video, and connect touch input/power with a USB-C to USB-A cable. That should be fine as long as it doesn't draw too much power, if it does draw too much power for the Pi to supply via USB you can use a powered USB hub in between.
by dustnbone
Wed Jun 17, 2020 7:59 am
Forum: Beginners
Topic: Boot Raspberry Pi4 without monitor
Replies: 11
Views: 628

Re: Boot Raspberry Pi4 without monitor

add hdmi_force_hotplug=1 to config.txt

This will make it pretend there's a monitor plugged in, giving TeamViewer a "display" to mirror.
by dustnbone
Thu Jun 11, 2020 8:00 pm
Forum: Raspberry Pi Desktop for PC and Mac
Topic: Desktop Version of Raspberry Pi OS?
Replies: 21
Views: 1496

Re: Desktop Version of Raspberry Pi OS?

dickon wrote:
Thu Jun 11, 2020 7:47 pm
https://www.raspberrypi.org/downloads/r ... i-desktop/ sounds almost exactly what you want, no?
I think OP is looking for a 64 bit (x64) OS, and the Pi Desktop is currently only 32bit (x86).
by dustnbone
Thu Jun 11, 2020 7:48 pm
Forum: General discussion
Topic: How to configure pi4 so that a LAN works on the lan port and the Internet is taken from a WIFI connection?
Replies: 4
Views: 380

Re: How to configure pi4 so that a LAN works on the lan port and the Internet is taken from a WIFI connection?

If the LAN interface is setup with a static IP and no gateway defined then Internet traffic will not be routed over it. Make sure the LAN IP subnet isn't the same as the one the wifi connection is using, so if the wifi router is for example giving out 192.168.0.x addresses, set the LAN up to use 192...
by dustnbone
Thu Jun 11, 2020 7:44 pm
Forum: Raspberry Pi Desktop for PC and Mac
Topic: Desktop Version of Raspberry Pi OS?
Replies: 21
Views: 1496

Re: Desktop Version of Raspberry Pi OS?

If you want to get as close as possible to what underpins the Pi OS, Debian is it. The differences between that and the Pi OS are mainly UI tweaks which should have no impact on development. Ubuntu is also derived from Debian, but does contain some non cosmetic system changes that could cause some i...
by dustnbone
Thu Jun 11, 2020 7:21 am
Forum: Arch
Topic: Static IP Address [ARCH]
Replies: 4
Views: 760

Re: Static IP Address

It shouldn't be a problem, you can assign multiple IPs to an interface.

But to avoid confusion I'd modify your dhcpcd.conf to prevent it from grabbing the dynamic IP from your router. Easiest way to do that is adding

Code: Select all

denyinterfaces eth0
by dustnbone
Thu Jun 11, 2020 5:49 am
Forum: Troubleshooting
Topic: Corrupted SD Card
Replies: 19
Views: 850

Re: Corrupted SD Card

According to the screenshot, either you didn't have a working internet connection or the raspberrypi repository was down for some reason. Confirm working internet and try the apt install gparted command again No, Dougie was correct. The OP hasn't done an apt update for so long that apt couldn't fin...
by dustnbone
Wed Jun 10, 2020 9:31 pm
Forum: Troubleshooting
Topic: Corrupted SD Card
Replies: 19
Views: 850

Re: Corrupted SD Card

Hi all, Thank you very much for the fast responds! I've been busy due to work, so sorry for the late responds. Hereby a screenshot: Screenshot. Again, thanks! According to the screenshot, either you didn't have a working internet connection or the raspberrypi repository was down for some reason. Co...
by dustnbone
Wed Jun 10, 2020 3:20 pm
Forum: Troubleshooting
Topic: kernel disconnecting all usb devices if usb 3 ports are used
Replies: 17
Views: 704

Re: kernel disconnecting all usb devices if usb 3 ports are used

_Stevie_ wrote:
Tue Jun 09, 2020 11:51 pm
Hmm, you could be right. I just wonder why the drive works perfectly on the usb2 port.
It's possible the drive draws less peak power at USB2 speed vs USB3 speed.

If you're sitting right on the edge of overcurrent this could easily be the difference between success and failure.
by dustnbone
Mon Jun 08, 2020 4:25 pm
Forum: Beginners
Topic: Pins melt with 12v fans
Replies: 14
Views: 672

Re: Pins melt with 12v fans

How much current are you pulling through the pins?

https://en.wikipedia.org/wiki/Ampacity
by dustnbone
Sun Jun 07, 2020 2:26 pm
Forum: General discussion
Topic: USB drive does not stay mounted..
Replies: 15
Views: 672

Re: USB drive does not keep mounted..

Kinda sounds like a networking issue. Are you using wifi for either or both of the links? If the network connection is dropping for some reason that may be causing Pi to unmount the samba share. Or maybe the Windows PC is rebooting for updates or something, also causing the share to unmount. Reflash...
by dustnbone
Fri Jun 05, 2020 2:57 am
Forum: Troubleshooting
Topic: kernel disconnecting all usb devices if usb 3 ports are used
Replies: 17
Views: 704

Re: kernel disconnecting all usb devices if usb 3 ports are used

Don't forget the 1.2A hard limit on USB power, shared across all ports. Exceeding this will not cause an undervoltage warning on the Pi, it will reset the entire USB bus. I'm not sure how or if it wlil recover from this state once loads are removed, it's possible it would require all USB devices to ...
by dustnbone
Mon May 25, 2020 2:18 pm
Forum: Automation, sensing and robotics
Topic: Gravity fed irrigation for a grow tent.
Replies: 9
Views: 525

Re: Gravity fed irrigation for a grow tent.

Don't forget that 2.31 feet of head = 1 PSI, so you're not dealing with NO pressure at the valve inlet, and you can increase the pressure by raising the source higher above the valve. Most solenoid valves will work fine with 2 PSI or 4.6 feet of head. Also if you can avoid it you want to keep your f...
by dustnbone
Wed May 20, 2020 11:02 am
Forum: Troubleshooting
Topic: Pi0 SSH problem
Replies: 5
Views: 225

Re: Pi0 SSH problem

Sounds like an IP addressing problem. Is your Pi assigned a static IP address? Either in your router via DHCP reservation (recommended) or by configuring the Pi itself to use a specfic IP address instead of getting one assigned from the router by DHCP. Otherwise you may get a different IP every time...
by dustnbone
Wed May 20, 2020 10:55 am
Forum: Media centres
Topic: External 3.5" hdd enclosure power consumption
Replies: 3
Views: 541

Re: External 3.5" hdd enclosure power consumption

Very unlikely it pulls max rated power from the supply, let alone continuously. Spinning drives will draw peak power during spinup, then considerably less once they're spun up (cuz rotational inertia). Typical 3.5" drives draw 6-10W during operation, but can briefly peak over 25W while they spin up.
by dustnbone
Wed May 20, 2020 1:30 am
Forum: Gaming
Topic: Endless Sky on the Pi4B (4G)
Replies: 6
Views: 811

Re: Endless Sky on the Pi4B (4G)

The GPU on the Pi4 doesn't support OpenGL 3, unless there's a way to compile the game to use GLES 3 or OpenGL 2.1 you might not be able to run it on the Pi.

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