Go to advanced search

by knute
Tue Sep 15, 2020 9:34 pm
Forum: Python
Topic: Printing Temp sensor output on LCD
Replies: 11
Views: 624

Re: Printing Temp sensor output on LCD

He was running it with a cron job?
by knute
Tue Sep 15, 2020 3:18 pm
Forum: Troubleshooting
Topic: pigpiod error message?
Replies: 13
Views: 869

Re: pigpiod error message?

So now I'm not so sure that the problem is with pigpio. I shut my Pi down and got this message:

A stop job is running to make remote cups printer available locally
by knute
Mon Sep 14, 2020 3:21 pm
Forum: Java
Topic: Small TFT screen issues and yellow Java windows
Replies: 0
Views: 308

Small TFT screen issues and yellow Java windows

I am using two small TFT screens, one by Waveshare on a Pi3 and the other a GoodTFT on a Pi4. Neither of these worked after the 5.4 kernel update so I went back to the 4.19 kernel until I had time to work on the problem. Today I checked the websites for both manufacturers and found they had new driv...
by knute
Sun Sep 13, 2020 8:34 pm
Forum: Beginners
Topic: RealVNC and SSH tunnel
Replies: 11
Views: 566

Re: RealVNC and SSH tunnel

I got TightVNC server/client to correct directly through SSH, but couldn't do that with RealVNC. It seems that they are blocking this type of connection. But direct connections work fine with VPN, so I use RealVPN to connect directly locally and have the option to connect directly remotely with VPN...
by knute
Sun Sep 13, 2020 3:06 pm
Forum: Beginners
Topic: RealVNC and SSH tunnel
Replies: 11
Views: 566

Re: RealVNC and SSH tunnel

If you are running the realvnc server from the Pi repository it will do direct connections. If you buy realvnc for the Pi because you want to use it for commercial purposes you need to buy the Enterprise edition to get direct connections. I have realvnc running on several Pis and I connect to them d...
by knute
Sun Sep 13, 2020 2:47 pm
Forum: Troubleshooting
Topic: pigpiod error message?
Replies: 13
Views: 869

Re: pigpiod error message?

Done. This problem is very intermittent and I have found no other factors that seem to affect it. This Pi does have one other possibly related issue in that it sometimes hangs during shutdown and does not blink the green LED. It isn't completely shutdown because I can't restart it by grounding GPIO ...
by knute
Mon Sep 07, 2020 3:47 pm
Forum: Troubleshooting
Topic: pigpiod error message?
Replies: 13
Views: 869

Re: pigpiod error message?

pi@raspberrypi3B-1:~ $ cat /lib/systemd/system/pigpiod.service [Unit] Description=Daemon required to control GPIO pins via pigpio [Service] ExecStart=/usr/bin/pigpiod -l ExecStop=/bin/systemctl kill pigpiod Type=forking PIDFile=pigpio.pid [Install] WantedBy=multi-user.target pi@raspberrypi3B-1:~ $ c...
by knute
Mon Sep 07, 2020 3:12 pm
Forum: General discussion
Topic: Problem while setting up RTC
Replies: 18
Views: 1215

Re: Problem while setting up RTC

systemd-timesyncd will update the RTC automatically, should be no need to run hwclock.
by knute
Sat Sep 05, 2020 11:04 pm
Forum: Troubleshooting
Topic: pigpiod error message?
Replies: 13
Views: 869

Re: pigpiod error message?

pi@raspberrypi3B-1:~ $ journalctl -u pigpiod -rxb -1 -- Logs begin at Sat 2020-09-05 17:22:03 CDT, end at Sat 2020-09-05 18:00:26 CDT Sep 05 17:59:59 raspberrypi3B-1 systemd[1]: Stopped Daemon required to control G -- Subject: A stop job for unit pigpiod.service has finished -- Defined-By: systemd -...
by knute
Sat Sep 05, 2020 9:37 pm
Forum: Troubleshooting
Topic: pigpiod error message?
Replies: 13
Views: 869

Re: pigpiod error message?

Please provide system log information to help troubleshoot: First, verify how your systemd journal is configured. By default it should be 'auto'. grep -i storage /etc/systemd/journald.conf #Storage=auto pi@raspberrypi3B-1:~ $ grep -i storage /etc/systemd/journald.conf #Storage=auto To get a persist...
by knute
Wed Sep 02, 2020 8:33 pm
Forum: Beginners
Topic: I want to send data from raspberry pi to pc
Replies: 7
Views: 496

Re: I want to send data from raspberry pi to pc

At the moment, raspberry pi does not have {'boxes':[[0,3,4,8][1,5,6,1]],'boxes_gt':[[2,3,3,8][4,2,8,5]]} to the terminal. I'm really curious what that means? Maybe an example of something we have done will give you some ideas. We have a Lidar scanner that is controlled by a C++ program running on a...
by knute
Tue Sep 01, 2020 4:06 pm
Forum: Beginners
Topic: I want to send data from raspberry pi to pc
Replies: 7
Views: 496

Re: I want to send data from raspberry pi to pc

How much data are you actually trying to send? The wifi network is capable of carrying a lot of data. Write a simple client/server pair to send the coordinates via the network to the PC and process them there.
by knute
Mon Aug 31, 2020 9:04 pm
Forum: Troubleshooting
Topic: pigpiod error message?
Replies: 13
Views: 869

Re: pigpiod error message?

The tricky thing was that it was intermittent. And it is still intermittent. I made the changes to the .service file and rebooted numerous times with no problem, then at the end of the day when I went to shut the computer down it hung. I rebooted and tried again and it hung. There are no startup er...
by knute
Sun Aug 30, 2020 6:22 pm
Forum: Troubleshooting
Topic: pigpiod error message?
Replies: 13
Views: 869

Re: pigpiod error message?

The pigpiod service file changed to Type=forking but did not specify the path to the main process id. Adding the following line to the [Service] section of that file (/etc/systemd/system/pigpiod.service) should fix the problem: [Service] PIDFile=pigpio.pid If you could provide feedback on this fix ...
by knute
Sun Aug 23, 2020 2:38 am
Forum: Java
Topic: Java 8 for the 64bit Raspberry OS
Replies: 12
Views: 2322

Re: Java 8 for the 64bit Raspberry OS

CrisBlu wrote:
Sat Aug 22, 2020 8:06 pm
Alternatively is there any other 64bit OS that might make this easier? I’m just frustrated at this point.
BellSoft has a 64bit Java 8 for ARM. http://bell-sw.com
by knute
Sun Aug 23, 2020 1:07 am
Forum: Troubleshooting
Topic: pigpiod error message?
Replies: 13
Views: 869

Re: pigpiod error message?

Thanks for that, I'll try it!
by knute
Thu Aug 20, 2020 9:21 pm
Forum: Java
Topic: How to install OpenJDK 8 and OpenJFX 8
Replies: 2
Views: 700

Re: How to install OpenJDK 8 and OpenJFX 8

OpenJDK8 does not include OpenJFX. You need to install it separately and the only OpenJFX in the repository now is 11. Java code written for 8 should work fine on 11. You can go to the Oracle site and get the old Java8 that used to come with a Pi and install that, it may have JavaFX in it. If it was...
by knute
Thu Aug 20, 2020 9:12 pm
Forum: Troubleshooting
Topic: Kernel won't roll back with rpi-update?
Replies: 6
Views: 407

Re: Kernel won't roll back with rpi-update?

Thanks Dougie, I'll give those a try.
by knute
Sat Aug 15, 2020 6:01 pm
Forum: Troubleshooting
Topic: Kernel won't roll back with rpi-update?
Replies: 6
Views: 407

Re: Kernel won't roll back with rpi-update?

My advice is go forwards. There was another update to the 5.4.51 kernel/bootcode/rpi-eeprom packages with apt yesterday. That includes all of the fixes for the known bugs in 5.4.51. From what I've read the issue with these little screens is not going to be resolved by fixes to RPiOS but by new driv...
by knute
Sat Aug 15, 2020 5:59 pm
Forum: Troubleshooting
Topic: Kernel won't roll back with rpi-update?
Replies: 6
Views: 407

Re: Kernel won't roll back with rpi-update?

Try this before running the rpi-update again: sudo rm /boot/.firmware_revision That file holds the "currently installed" firmware/kernel version, but doesn't get cleared when apt installs a new kernel or firmware. (Perhaps RPT could consider making the raspberrypi-kernel and raspberrypi-b...
by knute
Sat Aug 15, 2020 2:44 am
Forum: Troubleshooting
Topic: Kernel won't roll back with rpi-update?
Replies: 6
Views: 407

Kernel won't roll back with rpi-update?

I have one of those small 3.5 inch video screens on one of my Pi4s and it stopped working with the 5.4.0 kernel. I used this command to roll back the kernel to 4.19.118: sudo rpi-update e1050e94821a70b2e4c72b318d6c6c968552e9a2 and it worked fine. But now when I run that command rpi-update says: pi@h...
by knute
Sat Aug 15, 2020 2:28 am
Forum: Java
Topic: Java Core dump failure
Replies: 3
Views: 1143

Re: Java Core dump failure

I had the same problem and it appears to be something with the amount of video memory. Try increasing it and see if that fixes the problem.
by knute
Thu Aug 06, 2020 2:47 pm
Forum: Troubleshooting
Topic: Just updated and vlc is gone?
Replies: 3
Views: 174

Re: Just updated and vlc is gone?

Thanks, installing it did bring it back.
by knute
Thu Aug 06, 2020 12:58 am
Forum: Troubleshooting
Topic: Just updated and vlc is gone?
Replies: 3
Views: 174

Just updated and vlc is gone?

I just did update and there were a lot of vlc related libraries and vlc is nowhere to be found now. I know there are some issues with this but how do I get it back in some version or condition?

Thanks.
by knute
Wed Aug 05, 2020 11:57 pm
Forum: Raspberry Pi OS
Topic: Do not upgrade VLC [solved]
Replies: 32
Views: 3707

Re: Do not upgrade VLC [solved]

I just updated, not knowing any of this, and vlc is gone. No longer in the menus or available on command line. How do I get it back?

Go to advanced search