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by Heater
Tue Sep 18, 2018 11:50 am
Forum: C/C++
Topic: High frequency PID control loop question
Replies: 12
Views: 241

Re: High frequency PID control loop question

Your project sounds more and more interesting. Be great to be able to follow along on a blog or such. Yes, I would not want to be adding the complexity of an FPGA unless it proves to be necessary. Perhaps one of your team mates on the software/electronics side would like to look into it on the side....
by Heater
Tue Sep 18, 2018 10:25 am
Forum: General discussion
Topic: Techmoan on Youtube - VinylVideo - Playing video from a 45rpm record
Replies: 2
Views: 103

Re: Techmoan on Youtube - VinylVideo - Playing video from a 45rpm record

What a weird and wonderful thing. It's so beautifully made. And with a PI !

I love what I read there: "VinylVideo is a fake archeology of media". Brilliant.
by Heater
Tue Sep 18, 2018 8:06 am
Forum: C/C++
Topic: High frequency PID control loop question
Replies: 12
Views: 241

Re: High frequency PID control loop question

Brandon92, I'd like to encourage you to look at the SpinalHDL hardware description language http://spinalhdl.github.io/SpinalDoc/ SpinalHDL is not so much a language but a library for the Scala language that provides for a nice way to define logic and from that generates Verilog or VHDL. I found it ...
by Heater
Tue Sep 18, 2018 1:53 am
Forum: General discussion
Topic: Raspbian Jessie: I wish to update/upgrade within my Jessie release, without revising to Stretch release
Replies: 4
Views: 145

Re: Raspbian Jessie: I wish to update/upgrade within my Jessie release, without revising to Stretch release

Debian Jessie is an old release and is no longer being updated except for security fixes. As a Long Term Support (LTS) release it will get such fixes until June 30, 2020. See here: https://wiki.debian.org/LTS Raspbian Jessie is derived from Debian Jessie but I have no idea if anyone is going track t...
by Heater
Mon Sep 17, 2018 8:05 pm
Forum: General discussion
Topic: Reporting posts - Clarification sought
Replies: 28
Views: 557

Re: Reporting posts - Clarification sought

hippy, No one has a problem with "classes" or "ballcocks"... I'm glad to hear it. ...but there are genuine and acknowledged issues with a master-slave concept and perpetuating it as an acceptable model. Well, I don't acknowledged any issues with a "master-slave" as a description of a technical conce...
by Heater
Mon Sep 17, 2018 7:01 pm
Forum: General discussion
Topic: Reporting posts - Clarification sought
Replies: 28
Views: 557

Re: Reporting posts - Clarification sought

I agree I find "worker" offensive as it reminds me of my family's impoverished and deprived circumstances. "parent" is even worse. Sometimes parents have to kill their children. That is dreadful. And grief Python has "classes". It's perpetuating the class struggle that has killed millions. Plumbers ...
by Heater
Mon Sep 17, 2018 6:47 pm
Forum: C/C++
Topic: High frequency PID control loop question
Replies: 12
Views: 241

Re: High frequency PID control loop question

I admire your tenacity in working with Quartus. That beast is so huge complex and slow I don't understand how anyone can develop anything non-trivial with it. I'd pretty much given up pursuing FPGAs and HDLs due to that frustration. Until I discovered Icarus and then Verilator and then SpinalHDL. Wi...
by Heater
Mon Sep 17, 2018 6:30 pm
Forum: General discussion
Topic: Reporting posts - Clarification sought
Replies: 28
Views: 557

Re: Reporting posts - Clarification sought

Benisimo, QUOTATION: “When I use a word,” Humpty Dumpty said, in rather a scornful tone, “it means just what I choose it to mean—neither more nor less.” “The question is,” said Alice, “whether you can make words mean so many different things.” “The question is,” said Humpty Dumpty, “which is to be m...
by Heater
Mon Sep 17, 2018 6:26 pm
Forum: General discussion
Topic: Reporting posts - Clarification sought
Replies: 28
Views: 557

Re: Reporting posts - Clarification sought

I'm all for doing the right thing.

What I'm seeing is lynch mobs bringing people down because they express views the mob disagrees with.

This is not the right thing.

Taking control of language seems to be part of the strategy.
by Heater
Mon Sep 17, 2018 5:46 pm
Forum: General discussion
Topic: Reporting posts - Clarification sought
Replies: 28
Views: 557

Re: Reporting posts - Clarification sought

mahjongg, Lets not succumb completely to any political correctness craziness from "social justice warriors", or we might loose all freedom of speech I did not like to use the now common "SJW" monica in my posts above. It seems like tarring a lot of people with the same brush. Something I object to w...
by Heater
Mon Sep 17, 2018 4:12 pm
Forum: General discussion
Topic: Reporting posts - Clarification sought
Replies: 28
Views: 557

Re: Reporting posts - Clarification sought

jamesh
I, for one, will not be sucumbing to this nonsense.
I'm glad to here that James.

Let's see what happens when the master/slave issue turns up on the Python sub forum here.
by Heater
Mon Sep 17, 2018 3:23 pm
Forum: General discussion
Topic: Adding PATH for python?
Replies: 12
Views: 274

Re: Adding PATH for python?

MuntyScruntfundle, Is there no way to append a path? The answer is given above: $ export PATH=.:$PATH Appends your existing path "$PATH" to the current directory "."' This means that when you type a command the shell will look for the program to run in your current directory first then your old PATH...
by Heater
Mon Sep 17, 2018 3:01 pm
Forum: General discussion
Topic: Reporting posts - Clarification sought
Replies: 28
Views: 557

Re: Reporting posts - Clarification sought

W. H. Heydt, I think because the vast majority of topics really lack controversy. So it used to be. But controversy is comming to even the most technical debate soon. Currently "master/slave" is now banned as way to discuss relations between processes in the Python world. Soon we won't be able to "k...
by Heater
Mon Sep 17, 2018 2:55 pm
Forum: General discussion
Topic: Reporting posts - Clarification sought
Replies: 28
Views: 557

Re: Reporting posts - Clarification sought

No reason for doubt at all I guess hippy. Except the is the internet and I have no idea who B.Goode is or how trustworthy he may or may no be. Perhaps he was joking.

My apologies for doubting you B.Goode.
by Heater
Mon Sep 17, 2018 2:25 pm
Forum: General discussion
Topic: Reporting posts - Clarification sought
Replies: 28
Views: 557

Re: Reporting posts - Clarification sought

Ha, you beat me to it B.Goode.

Assuming you actually did as you say of course.
by Heater
Mon Sep 17, 2018 1:06 pm
Forum: General discussion
Topic: Running app on boot.
Replies: 2
Views: 67

Re: Running app on boot.

If you are wanting to run a non GUI service in the background use the Raspbian init system: systemd. This only requires a short and simple "service" file to be placed into /etc/systemd/system that tells systemd what to start, how and when. See here for an explanation and example: https://www.raspber...
by Heater
Mon Sep 17, 2018 11:38 am
Forum: Off topic discussion
Topic: HTML inserted into forum drafts
Replies: 5
Views: 1976

Re: HTML inserted into forum drafts

Ah, now that you mention it I vaguely recall that someone else reported this "feature" a little while ago.
by Heater
Mon Sep 17, 2018 11:34 am
Forum: General discussion
Topic: RS485 module
Replies: 7
Views: 164

Re: RS485 module

Please note: Contrary to a comment above RS422/485 do not use +12V and -12V signals.
by Heater
Mon Sep 17, 2018 11:23 am
Forum: General discussion
Topic: DIY POE?
Replies: 21
Views: 490

Re: DIY POE?

Quite so.

Can the Pi sensibly make use of 1000Mbit/s ethernet ?

Lucky for me my camera device needs nothing like that bandwidth. It only sends a couple of hundred bytes every time it detects an object it's looking for.
by Heater
Mon Sep 17, 2018 10:57 am
Forum: Off topic discussion
Topic: HTML inserted into forum drafts
Replies: 5
Views: 1976

Re: HTML inserted into forum drafts

I don't see any untoward, naked, HTML showing up in that post either.

Also I don't see anything unexpected in the post using "view page source".
by Heater
Mon Sep 17, 2018 10:52 am
Forum: C/C++
Topic: Distributing code for others
Replies: 3
Views: 120

Re: Distributing code for others

Personally I don't think any application code I install should be messing with my operating systems configuration. Like for example udev rules. Perhaps just supply instructions on how to tweak udev rules in your installation document. Or if scripting it at least have the script say what it wants to ...
by Heater
Mon Sep 17, 2018 10:47 am
Forum: General discussion
Topic: Raspberry Pi is a waste of time (and money).
Replies: 115
Views: 3829

Re: Raspberry Pi is a waste of time (and money).

I find describing the forum as "toxic" is disgusting. It's far to strong a word for a bit of misbehaving on the forum or a reply that somebody did not understand or made them feel a bit uncomfortable. It's a terrible generalization and very insulting to all the fine folks that take part here. Yes, I...
by Heater
Mon Sep 17, 2018 10:19 am
Forum: General discussion
Topic: DIY POE?
Replies: 21
Views: 490

Re: DIY POE?

My dirty little secret is that I have done what MuntyScruntfundle asks for, almost, not with a Pi. I have a strange camera that outputs data over ethernet and has a separate power cable. The ethernet cable does not plug into the usual ethernet jack but rather one has to connect the conductors to a t...
by Heater
Mon Sep 17, 2018 7:46 am
Forum: General discussion
Topic: DIY POE?
Replies: 21
Views: 490

Re: DIY POE?

One could indeed mooblie.

Which brings us back to my first reply here "Nice idea but not so easy."

The OP's requirement was "without having to spend cash?" and by the sound of it simplicity was required.
by Heater
Mon Sep 17, 2018 7:23 am
Forum: General discussion
Topic: Raspberry Pi is a waste of time (and money).
Replies: 115
Views: 3829

Re: Raspberry Pi is a waste of time (and money).

Yes, that is a problem. The "google" it reply leads the reader to another "google it" reply leads to.... ad infinitum. I think we have all suffered that by now. Worse still it may lead the reader to a solution that does not work, is out of date, not quite applicable or just plain wrong. I do like yo...

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