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by pfletch101
Mon Sep 06, 2021 6:09 pm
Forum: Raspberry Pi OS
Topic: Repo changed from "stable" to "oldstable", what does this mean?
Replies: 55
Views: 83047

Re: Repo changed from "stable" to "oldstable", what does this mean?

[The folks complaining need to run sudo apt-get update --allow-releaseinfo-change and live with the fact that software development is a continuous process that needs release to release upgrades. The "folks complaining" have apparently distributed a large number of 'appliances' which are P...
by pfletch101
Sat Aug 28, 2021 2:15 pm
Forum: Raspberry Pi OS
Topic: Repo changed from "stable" to "oldstable", what does this mean?
Replies: 55
Views: 83047

Re: Repo changed from "stable" to "oldstable", what does this mean?

The normal mantra will continue to update systems within the original version, but from past history RPT will not continue to provide updates, so only the Debian updates will apply. I share the OP's surprise that there were no available updates after (in my case) 2 weeks since my last apt dist-upgr...
by pfletch101
Wed Aug 18, 2021 11:24 pm
Forum: General discussion
Topic: Rpi reboot
Replies: 14
Views: 747

Re: Rpi reboot

If you (or someone else) can watch its activity light when you 'reboot' it, the standard shutdown sequence (10 short flashes followed by one long flash) will be followed by further activity if it is actually rebooting and by none if it isn't. "10 short flashes followed by one long flash" ...
by pfletch101
Wed Aug 18, 2021 10:04 pm
Forum: General discussion
Topic: Rpi reboot
Replies: 14
Views: 747

Re: Rpi reboot

I have not checked, and don't know how to check if it just isn't accepting a headless connection. If you (or someone else) can watch its activity light when you 'reboot' it, the standard shutdown sequence (10 short flashes followed by one long flash) will be followed by further activity if it is ac...
by pfletch101
Wed Aug 18, 2021 7:48 pm
Forum: General discussion
Topic: Raspberry Pi Power Backup UPS
Replies: 3
Views: 358

Re: Raspberry Pi Power Backup UPS

Can Raspberry Pi 4 connect to any computer UPS ? The biggest challenge is power supply. Is Raspberry suppose or keep reboot at sudden power glitch ? Some people experienced it at slight flicker. Is there any solutions if this reboot issue happens ? I have my 'workhorse' Pi's official power supply c...
by pfletch101
Wed Aug 18, 2021 7:19 pm
Forum: General discussion
Topic: Rpi reboot
Replies: 14
Views: 747

Re: Rpi reboot

I am using the raspberry menu to request a reboot, not a shutdown. I set this all up back in December or January, it all worked as expected. it has only been in the last week that I have seen this different behavior. I have normally not shutdown or rebooted often though. How long are you waiting fo...
by pfletch101
Thu Jul 22, 2021 5:57 pm
Forum: Troubleshooting
Topic: Could use help trying to run an old windows program
Replies: 12
Views: 761

Re: Could use help trying to run an old windows program

So assuming it would run where do I go from there? I can probably convinced a windows XP computer to boot it might have a functional CD-ROM. Not exactly modern windows. Your chances of getting it to run under XP are probably much better than your chances of getting it to run under emulation on a Pi...
by pfletch101
Thu Jul 22, 2021 2:13 pm
Forum: Troubleshooting
Topic: Could use help trying to run an old windows program
Replies: 12
Views: 761

Re: Could use help trying to run an old windows program

It is frequently difficult or impossible to get Windows 95/98 software to run on modern versions of Windows . I have found old CD-based educational packages to be a particular problem. There are all sorts of reasons for this, including the use of copy protection schemes that depend on the physical l...
by pfletch101
Wed Jul 21, 2021 7:38 pm
Forum: Beginners
Topic: developing cross platform.
Replies: 5
Views: 351

Re: developing cross platform.

I don't have or use any Zeros, but I am currently using a headless Pi 3B+ to develop code for the Pico. I find it a bit more convenient than going directly from my Windows system, though that works pretty well, too. I have used Thonny to work through the MicroPython tutorial for the Pico and VS Code...
by pfletch101
Wed Jul 21, 2021 7:23 pm
Forum: General discussion
Topic: Raspberry Pi GPIO Controller
Replies: 4
Views: 317

Re: Raspberry Pi GPIO Controller

As for controlling one output from 2 programs what ever way you doing it its a bad idea as the 2 programs could be trying to set the pin to opposite states, even if you had one program feeding a request to the other you could still have the pin flip flopping from state to state unless you give one ...
by pfletch101
Tue Jul 13, 2021 9:03 pm
Forum: General discussion
Topic: heartbeat sensor for pi
Replies: 4
Views: 296

Re: heartbeat sensor for pi

@dbrion06: I haven't used any of this kit, and a quick Google did not find anything about the pulsesensor Python package, but I think that the necessary sampling is being done by code triggered by the startAsyncBPM() function. My understanding would be that the loop is only reading the pulse from st...
by pfletch101
Sat Jul 10, 2021 6:03 pm
Forum: General discussion
Topic: 817 Opto Isolator Confusion
Replies: 7
Views: 449

Re: 817 Opto Isolator Confusion

My mid-range EX330 meter has a mode that with give an audible beep when continuity is detected. Despite the ohm reading changes the meter fails to give this beep. Does this mean the opto-isolator in practice will not be sufficient to complete a circuit like say a relay can? When you trigger a (norm...
by pfletch101
Sat Jul 10, 2021 2:30 pm
Forum: General discussion
Topic: Powering Pi on Schedule
Replies: 12
Views: 580

Re: Powering Pi on Schedule

My Pi turns off on schedule. One thing I noticed is that the Pi doesn't actually 100% turn off because the red LED is on and I have a LCD connected via VCC to the 5V pin and the LCD still has power even when Pi is turned off. So When I turn it off I have to set the LCD backlight to 0 to turn the LC...
by pfletch101
Sat Jun 26, 2021 1:21 pm
Forum: General
Topic: Cascade of errors running pico_setup.sh
Replies: 10
Views: 804

Re: Cascade of errors running pico_setup.sh

Since your issue is not remotely Pico-related, you may be better raising it as a new message in (e.g.) Troubleshooting, where it will likely be seen by far more people.
by pfletch101
Mon Jun 21, 2021 11:47 pm
Forum: General
Topic: Cascade of errors running pico_setup.sh
Replies: 10
Views: 804

Re: Cascade of errors running pico_setup.sh

Thanks! I had just finished burning a completely clean SD to test, and discovered that sudo apt dist-upgrade provoked a similar shower of errors on that, so I figured out that something was going on with the mirrors. I will make the change you suggest for now.
by pfletch101
Mon Jun 21, 2021 11:01 pm
Forum: General
Topic: Cascade of errors running pico_setup.sh
Replies: 10
Views: 804

Re: Cascade of errors running pico_setup.sh

Show the full log Here you go: Running on a Raspberry Pi Installing Dependencies Hit:1 http://archive.raspberrypi.org/debian buster InRelease Hit:2 http://raspbian.raspberrypi.org/raspbian buster InRelease Hit:3 http://weewx.com/apt squeeze InRelease Reading package lists... Building dependency tre...
by pfletch101
Mon Jun 21, 2021 8:50 pm
Forum: General
Topic: Cascade of errors running pico_setup.sh
Replies: 10
Views: 804

Re: Cascade of errors running pico_setup.sh

aallan wrote:
Mon Jun 21, 2021 8:45 pm
Did you run,

Code: Select all

sudo apt update
sudo apt full-upgrade

beforehand? pico-setup expects and up-to-date version of Raspberry Pi OS.
As I noted in my original post, I ran sudo apt update/sudo apt dist-upgrade rather than full-upgrade for the latter, but I believe that the two options are synonyms.
by pfletch101
Mon Jun 21, 2021 8:37 pm
Forum: General
Topic: Cascade of errors running pico_setup.sh
Replies: 10
Views: 804

Re: Cascade of errors running pico_setup.sh

/etc/apt/sources.list contains: deb http://raspbian.raspberrypi.org/raspbian/ buster main contrib non-free rpi # Uncomment line below then 'apt-get update' to enable 'apt-get source' #deb-src http://raspbian.raspberrypi.org/raspbian/ buster main contrib non-free rpi which looks right. /etc/apt/sourc...
by pfletch101
Mon Jun 21, 2021 7:56 pm
Forum: General
Topic: Cascade of errors running pico_setup.sh
Replies: 10
Views: 804

Cascade of errors running pico_setup.sh

When I run pico_setup.sh on the Pi 3B+ to which I plan to attach it, it initially finds a number of satisfied dependencies, but then fails with the following cascade of errors. I did try rerunning it after a apt update/apt dist-upgrade sequence, but this did not help. I will try again in a couple of...
by pfletch101
Mon Jun 21, 2021 2:19 pm
Forum: Networking and servers
Topic: Set static ip on raspberry pi 2B
Replies: 7
Views: 668

Re: Set static ip on raspberry pi 2B

In general, you should let your router or DHCP server (if the latter is separate from your router, which is not usual in SOHO setups) handle IP address assignment. Setting fixed addresses on peripheral devices frequently leads to confusion, or worse, particularly when subsequent changes are made to ...
by pfletch101
Sat Jun 19, 2021 12:34 pm
Forum: Other projects
Topic: Monitoring a Heat-Recovery Ventilator in a Home Control System
Replies: 4
Views: 534

Re: Monitoring a Heat-Recovery Ventilator in a Home Control System

You don't say if the data is async or synchronous (i.e. with a separate clock line) but I assume the former. It is async. There is no data on the third line (which I think is a common return). The smallest time-value of 0.5 msec does imply a baud rate around 2000; if you measure the width accuratel...
by pfletch101
Fri Jun 18, 2021 11:01 pm
Forum: Other projects
Topic: Monitoring a Heat-Recovery Ventilator in a Home Control System
Replies: 4
Views: 534

Re: Monitoring a Heat-Recovery Ventilator in a Home Control System

That is an interesting approach, but I think that the variable length (0.5, 1.0, or occasionally 1.5 msec) and number of pulses in the frequent pulse trains would cause confusion in a setup that was expecting just the presence or absence of a regular pulse. After doing some more scoping, I have conf...
by pfletch101
Fri Jun 18, 2021 1:29 pm
Forum: Beginners
Topic: Is it possible to run Python functions simultaneously?
Replies: 6
Views: 468

Re: Is it possible to run Python functions simultaneously?

Hello. Let's say we have the following in Python: Function 1: Turns on LED Function 2: Turns on buzzer Function 3: Turns on motor Would it be possible to wrap all three functions into one function and have them run at the same time? Anybody have experience with this? If so, what library did you use...
by pfletch101
Thu Jun 17, 2021 7:42 pm
Forum: Other projects
Topic: Monitoring a Heat-Recovery Ventilator in a Home Control System
Replies: 4
Views: 534

Monitoring a Heat-Recovery Ventilator in a Home Control System

I am working on an ongoing Pi-based home-control project, with its components written in Python and currently running on a 3B. I want to include (at least) monitoring of a Lennox 'Healthy Climate' heat-recovery ventilator, which is currently managed by its own wall controller and time-switches. Thes...
by pfletch101
Tue Jun 08, 2021 2:18 pm
Forum: Networking and servers
Topic: Connecting multiple raspberry pis to wifi
Replies: 5
Views: 444

Re: Connecting multiple raspberry pis to wifi

Hypothesis: Your single WiFi router has a finite limit on the number of concurrent associations it can maintain. There are already (MAX_ASSOCIATIONS - 5) connections in place before you start connecting your fleet of RPi systems... (Purely conjecture - but it fits the description... Maybe previousl...

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