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Randor 22-Dec-22 1:00

Randor

22-Dec-22 1:00

OriginalGriff wrote:
Voting closes at Noon GMT tomorrow

I'm calling Bull sheets, there is no method for counting votes by GMT tomorrow. You are full of sheet, might be nice silky 1500 thread sheets, but it's a bunch of sheets.

I volunteer to do the CCC until January 3rd, Jesus is busy wrapping gifts and god of beginnings (Janus) will be busy opening them.

Any objections?

OriginalGriff22-Dec-22 1:15

22-Dec-22 1:15

I've added it to the vote list! Big Grin | :-D

Randor 22-Dec-22 1:33

Randor

22-Dec-22 1:33

What would happen if I violated the vote and posted a CCC during the holidays?

Would I be banned? Perhaps muted?

OriginalGriff22-Dec-22 2:13

22-Dec-22 2:13

Nothing, probably - it's more so people know whether they can answer tomorrows if they aren't going to be available to post one next Monday.

And to see who can find a silly use for a response icon, of course. Big Grin | :-D

Randor 22-Dec-22 2:25

Randor

22-Dec-22 2:25

I found a great list of religious holidays. Do you think it would be appropriate for codeproject.com to honor them all?

Religious Observances Calendar

What date should we resume the CCC based on that list?

Shall it be עשרה בטבת or Epiphany or Three Kings Day?

OriginalGriff22-Dec-22 2:38

22-Dec-22 2:38

You missed out the Flying Spaghetti Monster, The Great Pumpkin, and the ichor god Bel-Shamharoth Big Grin | :-D

Randor 22-Dec-22 2:43

Randor

22-Dec-22 2:43

OriginalGriff wrote:
You missed out the Flying Spaghetti Monster

I'm glad you mentioned that. It's extremely difficult to be unbiased. Let's include those religious dates:

Holy days | Church of the Flying Spaghetti Monster Australia

We may need to add them into a spreadsheet, I'm having trouble remembering them all. Should we ask the codeproject staff to assist?

Richard Deeming22-Dec-22 2:56

Richard Deeming

22-Dec-22 2:56

Don't forget to include 2nd April, 27th February, and 2nd December[^]. Big Grin | :-D

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

OriginalGriff22-Dec-22 4:05

22-Dec-22 4:05

And May the 4th[^]

theoldfool22-Dec-22 3:47

theoldfool

22-Dec-22 3:47

How to vote "don't care"
Never, ever, ever, ever solved one.
Mostly because I don't try anymore.
Smile | :)

I accept eggnog donations.

>64
Some days the dragon wins. Suck it up.

OriginalGriff22-Dec-22 4:07

22-Dec-22 4:07

Pick an icon that isn't in the list and use that, as others have done. Though it would be nice to have an explanation - I'm assuming that the Beer | [beer]

votes indicate that the setter should be drunk when setting them? Big Grin | :-D

Craig Robbins22-Dec-22 5:22

Craig Robbins

22-Dec-22 5:22

Whether "at work" or on vacation next week I will be at home. In either case I enjoy the puzzles.

OriginalGriff22-Dec-22 5:27

22-Dec-22 5:27

So vote!

Craig Robbins22-Dec-22 5:35

Craig Robbins

22-Dec-22 5:35

already did on your original post Thumbs Up | :thumbsup:

CCC-22-12-2022

pkfox21-Dec-22 21:30

pkfox

21-Dec-22 21:30

This month speeches are a put up job (11)

Life should not be a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in broadside in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming “Wow! What a Ride!" - Hunter S Thompson - RIP

Re: CCC-22-12-2022

OriginalGriff21-Dec-22 21:42

Re: CCC-22-12-2022 - Winner

21-Dec-22 21:42

Re: CCC-22-12-2022

DerekT-P22-Dec-22 0:03

DerekT-P

22-Dec-22 0:03

DECORATIONS

This month = DECember
speeches   =    ORATIONS

a put-up job.

Telegraph marker posts ... nothing to do with IT
Phasmid email discussion group ... also nothing to do with IT
Beekeeping and honey site ... still nothing to do with IT

pkfox22-Dec-22 0:15

pkfox

22-Dec-22 0:15

Well done Derek - YAUT

For want of a 12v wall wart

honey the codewitch21-Dec-22 21:29

honey the codewitch

21-Dec-22 21:29

I think I found a potential breakthrough for my project.

I believe I have figured out a way to drive pumps and fans at a specified RPM without using a PID based system.

PID is a problem because you have to calibrate it for each device using a scope, or at the very least by hand checking the output, even if not using a scope.

The trouble is for some reason I don't have a general purpose power supply for my bench. It actually never occurred to me that I'd need one because everything I work with is 3.3 volts or 5 volts.

I used to have a collection of DC wall warts for situations similar to this, but I don't know what happened to them, although I probably got rid of them while trying to cast off clutter during the last move or something.

So now I've got this trick code to do adaptive speed adjustments on fans and pumps but no way to test the theory until probably after Christmas.

I do have a couple of friends with fans who are willing to test this, but one can't find his, and the other is asleep right now. (They're both in different parts of the world)

This isn't a general request for help. However, if anyone wants to help and has an ESP32 of some sort and a PWM fan + two+ channel level converter, I wouldn't turn it down. Smile | :)

To err is human. Fortune favors the monsters.

Randor 21-Dec-22 22:12

Randor

21-Dec-22 22:12

honey the codewitch wrote:
I believe I have figured out a way to drive pumps and fans at a specified RPM without using a PID

honey the codewitch wrote:
This isn't a general request for help. However, if anyone wants to help and has an ESP32 of some sort and a PWM fan + two+ channel level converter, I wouldn't turn it down.

I love new discoveries, could you describe the new algorithm you found?

honey the codewitch21-Dec-22 22:26

honey the codewitch

21-Dec-22 22:26

It's shockingly simple.

I give it a change delay - say 500ms (acceptable for my specs)

It can measure the RPM at any given point.

So what it does is there is a state machine and as soon as you change the RPM it stores the new target, and kicks the state machine off in one or two states depending if it's moving up or down.

Once you entered the new target RPM it continues to increase or decrease the PWM duty by one "tick"** each change delay until just after the RPM passes the target RPM mark, at which point it draws it back a tick and then stops changing.

** what a tick is depends on the resolution of the PWM.

The only downsides I can see to this method is probably taking more time to do the change, and potentially passing the mark for an instant before correcting itself.

To err is human. Fortune favors the monsters.

Randor 21-Dec-22 23:16

Randor

21-Dec-22 23:16

Believe it or not I use to write dynamic positioning software that drove azimuth/bow thrusters, rudders and propellers and we heavily relied on PID algorithms. I use to write maritime vessel navigation software when I worked at Marine Technologies. I wrote both civilian and DoD navigation software systems.

My "instincts" tell me that what you are proposing might work for your "Laboratory setup". But you can get into situations where you are "chasing the error rate".

I know this might be hard to visualize but imagine you are on a school ground. You are on a playground swing, the person behind you pushes just 0.5 seconds after you reach the bottom of the swing.

It's that simple, you need to account for the error rate.

In fact most dynamic systems need a Kalman filter for higher accuracy.

Your 'dynamic system' is whatever Temperature gradient of the mass you are working with.

honey the codewitch21-Dec-22 23:30

honey the codewitch

21-Dec-22 23:30

My lab actually is more demanding than my production, wherein with my lab I'm testing changes far more rapidly than will be made in my production environment.

I'm thinking if it's good enough to control PC style fans it should be able to drive fans that I only need to control in increments of minutes per change.

We'll see. I can plug PID into it if I have to, but I don't want to have to calibrate everything.

In fact it is nearly impossible for me to do so in the field since all the real world hardware is halfway 'round the world from me, and I need this code in place before the project's principal makes the trip over there.

If this part of the project fails in terms of the drop dead date for the above trip, it's not a show stopper, but it would be immensely helpful if it works.

To err is human. Fortune favors the monsters.