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by pjc123
Sat May 30, 2020 11:12 pm
Forum: Ubuntu
Topic: Ubuntu 20.04 arm64 raspberry pi 4 default gnome desktop graphical errors
Replies: 17
Views: 971

Re: Ubuntu 20.04 arm64 raspberry pi 4 default gnome desktop graphical errors

I switched to MATE.....no issues. I use the command line 90 percent of the time. I just needed a desktop that just works.
by pjc123
Sat May 30, 2020 2:30 am
Forum: Troubleshooting
Topic: WinDiskImager Verify Sector 2048 Error
Replies: 6
Views: 255

Re: WinDiskImager Verify Sector 2048 Error

Ran the tests on the card a couple of times and it passes every time. Tried the raspberry pi imager and there were no glitches, but seeing that this is an intermittent problem with different issues each time, only time will tell. Now running Ubuntu 20.04, with the Mate desktop installed afterwords.
by pjc123
Fri May 29, 2020 6:16 pm
Forum: Troubleshooting
Topic: WinDiskImager Verify Sector 2048 Error
Replies: 6
Views: 255

Re: WinDiskImager Verify Sector 2048 Error

Amazon. I am having all kinds of troubles. Multicolor hdmi screen sometimes, locked processes trying to run apt after booting, not accepting passwords sometimes, etc., different every time I reimage the card. I am not sure it is the card or the raspberry pi. I guess i will send the card back to Amaz...
by pjc123
Fri May 29, 2020 4:39 pm
Forum: Ubuntu
Topic: Ubuntu 20.04 arm64 raspberry pi 4 default gnome desktop graphical errors
Replies: 17
Views: 971

Re: Ubuntu 20.04 arm64 raspberry pi 4 default gnome desktop graphical errors

I am having the same problem. Just installed ubuntu with default desktop and screen blacks out and I can use the mouse to paint wide lines all over the place. Did you come up with a definitive fix?
by pjc123
Fri May 29, 2020 3:18 pm
Forum: Troubleshooting
Topic: WinDiskImager Verify Sector 2048 Error
Replies: 6
Views: 255

WinDiskImager Verify Sector 2048 Error

I just got a Raspberry Pi 4 and I am trying to install an Ubuntu image on a brand new Samsung Evo Plus 128GB card. I verified the Ubuntu image with the checksums, so that is OK. I also did a low level format of the card with the SD card formatter but it did not help. I even tried another usb card wr...
by pjc123
Fri May 29, 2020 3:01 pm
Forum: Advanced users
Topic: 40 pin Compatibility - Old Pi vs New Pi
Replies: 7
Views: 495

Re: 40 pin Compatibility - Old Pi vs New Pi

Thanks. My two pis are revision 000e. that would be: Model = B PCB revision = 2.0 Memory = 512 MB. Release Date = Q4 2012. I forgot to mention that they have 26 pins. My goal is to expand the GPIO to either 64 or 128 pins because I need them. Looking at various IC expander chips now. Setting up the ...
by pjc123
Fri May 29, 2020 12:44 am
Forum: Advanced users
Topic: 40 pin Compatibility - Old Pi vs New Pi
Replies: 7
Views: 495

40 pin Compatibility - Old Pi vs New Pi

I will be upgrading from a Model B Version 2 to the current Raspberry Pi 4. Has anything changed with the 40 pin header in all that time that may be a Gotcha that I might not catch? I am going to read up on it, but just making sure that I don't miss anything obscure and blow up something. Hopefully ...
by pjc123
Thu May 28, 2020 4:50 pm
Forum: Troubleshooting
Topic: SOLVED: Upgrade from Raspbian Wheezy?
Replies: 3
Views: 201

Re: Upgrade from Raspbian Wheezy?

Thanks, the updates fixed a couple issues I was having.
by pjc123
Thu May 28, 2020 4:03 pm
Forum: Troubleshooting
Topic: SOLVED: Upgrade from Raspbian Wheezy?
Replies: 3
Views: 201

SOLVED: Upgrade from Raspbian Wheezy?

So, I have two old raspberry pis in projects that I haven't used for many years that I am brushing the dust off of due to all this cornavirus extra time on my hands that I would like to upgrade: Model B Rev 2 (Year 2012) OS = Raspbian Wheezy Debian 7.5 Linux 4.1.19+ apt-get update no longer works: V...
by pjc123
Thu Feb 15, 2018 12:57 pm
Forum: Other projects
Topic: Fireworks Launcher
Replies: 10
Views: 4215

Re: Fireworks Launcher

rados-dataplicity wrote:
Thu Feb 15, 2018 11:11 am
What do you use to ignite the fireworks ?
Go to the Website under Menu > Fireworks Launcher > Description > Firework Fuse Ignition Method.
by pjc123
Mon Feb 12, 2018 9:13 pm
Forum: Other projects
Topic: Fireworks Launcher
Replies: 10
Views: 4215

Re: Fireworks Launcher

Changed website to secure SSL access.
by pjc123
Sat Feb 07, 2015 1:06 pm
Forum: User groups and events
Topic: Southern New Jersey
Replies: 10
Views: 4103

Re: Southern New Jersey

I can't speak for where the new pi's are in stock, if that is what you mean, but I bought most of my previous ones at Element14.

http://www.newark.com/raspberry-pi-acce ... reId=10194
by pjc123
Sat May 03, 2014 4:40 pm
Forum: Other projects
Topic: Fireworks Launcher
Replies: 10
Views: 4215

Re: Fireworks Launcher

Well, it is getting close to that time of year again and the itch is back. I haven't turned my pis on in almost a year, so I better start checking them out and doing some software updates. I am thinking of switching from Wheezy stable to Jessie testing, as I suspect it has stabilized a bit by now. A...
by pjc123
Sun Nov 10, 2013 10:21 pm
Forum: Troubleshooting
Topic: Wifi won't start at boot / restart
Replies: 7
Views: 10107

Re: Wifi won't start at boot / restart

It may not help your problem, but the first thing I would do is turn off power management as it can cause disconnect problems. auto wlan0 allow-hotplug wlan0 iface wlan0 inet manual wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf iface default inet static address 192.168.1.254 netmask 255.255.255.0...
by pjc123
Sat Nov 09, 2013 12:13 pm
Forum: General discussion
Topic: 4 Rpi's
Replies: 26
Views: 6115

Re: 4 Rpi's

How can you even compare an Android consumer device with a Raspberry Pi development board. You are talking about two completely different products for two completely different audiences.
by pjc123
Fri Nov 08, 2013 12:07 pm
Forum: Beginners
Topic: Switching lawn sprinklers on/off
Replies: 3
Views: 1218

Re: Switching lawn sprinklers on/off

There are over two years of posts on this forum with regards to controlling lawn sprinklers with the raspberry pi.

Google search:

site:raspberrypi.org sprinkler
by pjc123
Thu Nov 07, 2013 12:33 pm
Forum: Advanced users
Topic: Repeating Keyboard Characters
Replies: 24
Views: 5377

Re: Repeating Keyboard Characters

Why do you people even respond to someone this arrogant.
by pjc123
Thu Nov 07, 2013 12:22 pm
Forum: Troubleshooting
Topic: WIFI Quality Debug
Replies: 3
Views: 2366

Re: WIFI Quality Debug

See my post here for continuously running wifi signal strength:

http://www.raspberrypi.org/phpBB3/viewt ... 5&p=445684

or purchase a decent high gain wifi dongle like a TP-LINK TL-WN722N.
by pjc123
Sat Nov 02, 2013 11:41 pm
Forum: Troubleshooting
Topic: Problems with wpa_supplicant
Replies: 3
Views: 3495

Re: Problems with wpa_supplicant

Is this a typo in your config file or your post? The wpa_supplicant file in particular is not forgiving at all if you have typos or incorrect parameters. Everything else is pretty much the same as my working config files which automatically connect to different access points using a headless pi. is ...
by pjc123
Wed Oct 30, 2013 11:22 am
Forum: Advanced users
Topic: Wireless Signal?
Replies: 2
Views: 1671

Re: Wireless Signal?

Or if you just want to see the link quality one time: cat /proc/net/wireless Or if you want to see the link quality continuously, you can use: watch -n 1 cat /proc/net/wireless Or if you want a continuously running graphical plot of the link quality of all signals available: wavemon I use wavemon qu...
by pjc123
Sat Oct 26, 2013 12:00 pm
Forum: Troubleshooting
Topic: Should I return my Pi? GPIO pins sit crooked.
Replies: 25
Views: 4954

Re: Should I return my Pi? GPIO pins sit crooked.

there will be no more "bowing" than normal, except of course if you try to force it to become horizontal, obviously. the slight angle does not prevent a normal header connector to fit, and the 1 to 1.5 mm more height on the left side should fit into most cases. I only foresee one potential problem,...
by pjc123
Sat Oct 26, 2013 11:26 am
Forum: Troubleshooting
Topic: Should I return my Pi? GPIO pins sit crooked.
Replies: 25
Views: 4954

Re: Should I return my Pi? GPIO pins sit crooked.

Wow, actually amazing that this passed quality control. Yes, it might be fine electrically but I say definitely exchange it, you never know what you might want to do with it later; something which isn't possible now with the awkward geometry of the pins. +1 about the quality control. No way I would...
by pjc123
Sat Oct 26, 2013 11:15 am
Forum: Beginners
Topic: Making of Raspberry Pi with 1GB RAM!
Replies: 12
Views: 15862

Re: Making of Raspberry Pi with 1GB RAM!

I am stepping up to the UDOO quad for my main experimental device, but only after their community grows a bit, more programs are compiled for their version of ARM, I get feedback from the forums about any issues, and possibly wait for a Rev 2 version (I didn't mind getting different revs with the Pi...
by pjc123
Fri Oct 25, 2013 5:49 pm
Forum: General discussion
Topic: Need help with something
Replies: 13
Views: 2397

Re: Need help with something

Rather then guessing what resistor is going to work or not, you should calculate it, or even easier use one of the very simple calculators that are available online like this one:

http://www.hebeiltd.com.cn/?p=zz.led.re ... calculator
by pjc123
Fri Oct 25, 2013 5:04 pm
Forum: General discussion
Topic: Need recommendations on GPIO wiring kits
Replies: 9
Views: 2070

Re: Need recommendations on GPIO wiring kits

pjc123, thanks for the advice and links. That's exactly what I was looking for. Glad to help. As I don't know your location, I forgot to mention that these are all US suppliers. There are equivalents in the UK and elsewhere. Get yourself a multimeter as well if you don't have one, even I cheap one ...

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