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TM44 analog logarithmic speed steps (not only linear)

Posted by klaus.steuer on 2022-09-27 20:01

Hello

I am using Dinamo with Z scale
Even i discussed this with Leon sometime ago, i didnt see any adjustments yet.
The linear speed steps for analog locos are not convinient.
The problem is, that with the min Voltage of 10 Volt, many Z scale locos are running 300+ km/h due to a missing step in the gear.
That causes, that i have only few speed steps left from zero to realistic speed.
If i could choose from linear to logarithmic speed steps, i could use much more steps which would cause a realistic acceleration and deceleration.
I see that i can choose it for motors and servos, but not for locos.

Isnt it possible to have this choice?
This is the only thing i have to complain with Dinamo but this causes as well that i cant convince people to use Dinamo at the moment.
Leon, couldnt you put this in the "To-Do" basket for the next release to help Z scale users?

Regards
Klaus

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Posted by Geert on 2022-12-02 16:56 Netherlands

Leon,

zoals afgesproken een test gedaan vanuit DinamousersCC waarin ik een betrekkelijk lang blok ( 1m) gebruikt heb om te testen, dit blok gekoppeld aan naast liggend blok als overloop. Meeting verricht waarbij Rechter railstaaf ( A ) en linker railstaaf ( B ) bij vooruit rijden. Beide blokken worden gevoed uit dezelfde TMH en hebben ieder een 3tal bezetmelders. (extra CD16 bij geplaatst ). Rails voor aanvang test gereinigd. Test uitgevoerd met analoge locomotieven die weinig tot geen uren gereden hebben.

BR94 met klokanker : Snelheid ingesteld op 7 in programma vertraging 1. Rijdt richting vooruit aanmerkelijk sneller dan richting achteruit ook bij omgedraaide loc.

BR260 met 5pool : heeft hogere snelheidwaarde nodig om te rijden. Snelheid ingesteld op 11 in programma vertraging 1. Opvallend is dat de loc met korte - (achter) zijde beide kanten uit harder rijdt dan met lange- (voor) zijde.

BR41 met 3pool Zonder tender: heeft nog hogere snelheidwaarde nodig om te rijden. Snelheid ingesteld op 21 in programma vertraging 1. Door hogere start waarde geen noemenswaardig verschil richting vooruit / achteruit ook niet na omdraaien loc.

Binnen iTrain snelheidsmeting locomotief op ijkspoor bemerk ik duidelijk verschil tussen vooruit tov achteruit.
Bijgevoegd iTrain meting Dinamo 64 stappen analoog BR94 klokanker:


Hopende iets te kunnen bijdragen. Mochten er onduidelijkheden zijn of andere metingen laat 't me weten.
Met vriendelijke groet,
Geert

iTrain snelheidsmeting BR94 klokanker analoog Dinamo.jpg (142.47 Kb)
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Posted by klaus.steuer on 2022-12-01 14:41

Hi,
Are there any news available?

Cheers
Klaus

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Posted by Leon van Perlo on 2022-12-02 23:49 Netherlands

Hallo Geert,
Ik maak op uit je verhaal dat je een soortgelijk effect ziet als ik.
Het verschil naar links/rechts (ik vermijd termen vooruit/achteruit omdat dit te verwarren is met de richting van de loc) is het sterkst bij klokankers minder bij de 5-polige motors en blijkbaar verwaarloosbaar bij de 3p. Dat laatse kan ik niet testen, want ik heb geen 3 polige, dus dank daarvoor. Je kunt ook zeggen: hoe gemakkelijker een motor opstart, hoe groter het verschil.
Mvg, Leon

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Posted by Geert on 2022-12-03 17:20 Netherlands

Leon,

jij verwoordt het (effect) correct .

Groet en dank,
Geert

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Posted by Leon van Perlo on 2022-12-20 14:28 Netherlands

Klaus, and possibly others running scale Z with TM44,

Can you try the attached TM44 firmware?
On my test track it seems a tremendous improvement on low speed.
Warning: BETA version!
Occupation detection may not be fine yet. It needs to be modified. I applied a quick fix, but needs some more coding.
This version will not interoperate with TM-H's!

Best regards, Leon

TM44_1220.zip (5.97 Kb)
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Posted by klaus.steuer on 2022-12-20 20:13

Leon,

i still get this message when i lock in at dinamousers.net

You have not been granted a customer status but have already applied for it on February 5, 2022

Could you please change that?

Can i find the necessary software there?

Regards
Klaus

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Posted by klaus.steuer on 2022-12-20 19:50

Leon,

could you please send me a link to the AVrootloader and any other config files i need?
I forgot where i can download those.
As soon as i have installed all of them, i will trial your version and report.

Thanks
Klaus

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Posted by Leon van Perlo on 2022-12-20 20:35 Netherlands

This forum: Dateiarchive > Software > VPEB Bootloader

To update the TM44's you have to set your RM-C in Bootloader Transparent Mode.
If not done already: Download and install DinamoConfig1.40
Start DinamoConfig, Choose COM-port, click "Bootloader Transp. Mode" in tab "RM-x", Close DinamoConfig.
Update TM44's using AVRootloader. Use TM44 manual paragraph 8.2 from point 6 onward (if needed).
Reboot RM-C when done to get your system back running.

Best Regards, Leon

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Posted by klaus.steuer on 2022-12-20 20:51

Leon, if i click on your link for DinamoConfig1.40, nothing happens.
Is it because i am not registered as a customer?
Where can i find the AVRootloader?
Regards
Klaus

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Posted by Leon van Perlo on 2022-12-20 21:16 Netherlands

All 3 links in my last post work on my PC, my MacBook and my smartphone. Checked, doublechecked.
You are registered as customer. Checked, updated, checked.

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Posted by klaus.steuer on 2022-12-21 08:18

Hi Leon,

got it done now.
Thanks for your help.
As soon as i got the firmware update done, i will test the new version.

Regards
Klaus

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Posted by klaus.steuer on 2022-12-21 14:10

Leon, you are my hero.
Huge difference at low speed now with any kind of motor.
Thank you so much.
Regards
Klaus

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Posted by Geert on 2022-12-21 14:24 Netherlands

Leon,

indeed for me too. The "Slow motion " is much Much Better.

Dank Leon, ook ik was in de gelegenheid om te testen. De benoemde BR94 in testbericht rijdt nu zelfs met stand 3 in DinamoUsersCC en in beide richtingen gelijkwaardig en langzaam.

Nogmaals dank,

Geert

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Posted by klaus.steuer on 2022-12-21 14:32

Yes, both directions in i-train with turned loco work the same good.
Thank you again Leon

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Posted by klaus.steuer on 2022-12-21 20:53

Dear All,

did some speed measuring drives and one of them was the BR 03 1001 (Märklin 88850)
This loco has a max speed of 130 km/h
With the old firmware i had 17 steps with a lowest speed of 59 km/h
With the new firmware i have 37 steps with a lowest speed of 28 km/h
Massiv positive change
Thanks again Leon

Regards
Klaus

88850_MESS_NEU (500x493).jpg (143.42 Kb)
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Posted by Leon van Perlo on 2022-12-22 01:45 Netherlands

Klaus, Geert (and others reading along),

Good to read that you are happy with the improvement.
FYI: These modifications are in the core of the TM44 code, which is written in Assembler for precise timing and speed. It's a lot of byte swapping, inverting, shifting, or'íng and and'íng to squeeze pwm, dcc, hfi, etc in. So I needed a period of high concentration to change this properly. Thank you for your patience.

NOTE that the code you have has some bugs. Attached a version 1.2.2.A. that has 2 fixes:

  • Loco is not running in the wrong direction anymore when HFI is switched on
  • Occupation detection is changed to match the modified pwm waveforms


The attached version still is a beta-version. I will not release the new version before also a number of other changes are implemented, but I guess it will be ok for you for the time being.

Geert, I thought you use TM-H and CD16. Beware that this modification will not (ever) be available for TM-H. The TM-H hardware cannot support the way the H-bridges are driven by the TM44 now. Sorry for that.
And ... DinamoUsersCC is quite outdated. I advise you to install DinamoConfig 1.40. You can testdrive with that too and it offers quite some additional configuration and testing options.

Best regards, Leon

TM44_1221.zip (5.72 Kb)
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Posted by Geert on 2022-12-22 16:14 Netherlands

Dank Leon,

voor je heldere uitleg.

"Geert, I thought you use TM-H and CD16. Beware that this modification will not (ever) be available for TM-H. The TM-H hardware cannot support the way the H-bridges are driven by the TM44 now. Sorry for that."

Leon, naast de TM-H's heb ik ook een 2 tal TM44 wel ik geupdate heb en daar de laatste ( deze ) test op gedaan.
Bewust tijdens de opbouw van de baan de TM44 geplaatst in het zichtbare stations-gebied ivm het aantal bezetmelders per blok, wat ik in het schaduwstation en rangeerterrein heb opgelost met TM-H en extra CD16.
Dus gelukkig kunnen testen met heel positief resultaat. Misschien in de toekomst het rangeerterrein ook uitrusten met TM44's.

"And ... DinamoUsersCC is quite outdated. I advise you to install DinamoConfig 1.40. You can testdrive with that too and it offers quite some additional configuration and testing options. "

Bedankt voor de tip. Natuurlijk de DinamoConfig 1.40 al lang geïnstalleerd en zelfs gebruikt tijdens de update om de RMx in Transparante mode te zetten. Maar daarna onbewust teruggegrepen naar DuCC.

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Posted by BadBanana on 2023-02-15 13:28

Thank you, Klaus.

Dear Leon,
Thank you for your efforts in making these changes and improvements. I must apologise for not having been an active participant in this discussion. At the end of last year "real-life" threw some unexpected distractions in my direction. Fortunately I am getting past them now, and I have been setting up a pair of TM44 units on my test layout which will make my life easier. If I have any particular feedback to add, I shall make it in the thread that you started concerning the 1.23 experimental release. I note the comments there concerning the use of the updated Dynamo Config program (version 1.41).
Thanks again and kind regards,
Les.

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