Author Topic: Next Gen DRSSTC  (Read 28570 times)

Offline Netzpfuscher

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Re: Next Gen DRSSTC
« Reply #120 on: November 19, 2020, 06:50:37 AM »
I won't change the max start cycles. There must be something wrong with your coil. You know that your coil is hard switching during startup?  ;)

But you can do it yourself, don't set values over 254, it is only a 8 bit counter:

https://github.com/Netzpfuscher/UD3/blob/8485ae9c3ac583cc6fc78cb531a84307acef4161/common/ud3core/cli_common.c#L216

Offline TMaxElectronics

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Re: Next Gen DRSSTC
« Reply #121 on: November 19, 2020, 11:52:28 PM »
I finally finished my new coil, can't wait to test it at the lab with more space (and maybe Netzpfuschers coil too)

Setting it up was so much easier than with more basic drivers too.
Just hook up the primary and run the autotune to see if it is tuned right, and that's it :D
No messing around with an oscilloscope, the feedback polarity, or tweaking potis to get the lead time correct. Just type in the numbers and the coil works, pretty awesome to be honest.

Offline Intra

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Re: Next Gen DRSSTC
« Reply #122 on: November 21, 2020, 12:52:35 PM »
I won't change the max start cycles. There must be something wrong with your coil. You know that your coil is hard switching during startup?  ;)

But you can do it yourself, don't set values over 254, it is only a 8 bit counter:

https://github.com/Netzpfuscher/UD3/blob/8485ae9c3ac583cc6fc78cb531a84307acef4161/common/ud3core/cli_common.c#L216

Thanks! Yes, you were right. Something was wrong with a coil. After deep analysis I found that my flashovers from previous test some way burnt sensor's comparator or +\-12v supply driver chain. After I cut out all peripheral driver part the signal became looking good.

Anyway, I choosed secondary and primary inductors for mmc I have and looks like the impedances is not matched good. Result of 20mS under 60A current limit is about 10-15cm spark.


Nevertheless I want to try to oscilate whole coil on start freq because I see the coil grab a feedback and sometimes jump between poles and I do not see another way besides to force a coil to sometimes hardswitch through the whole freq sweeping down under spark loading so please if you can change the start cycles counter to 16 or 32 bit I will be very appreciated.

« Last Edit: November 21, 2020, 01:24:24 PM by Intra »

Offline Hydron

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Re: Next Gen DRSSTC
« Reply #123 on: November 21, 2020, 06:22:26 PM »
Netzpfuscher pointed at the place where the range can be changed - treat it as an opportunity to learn how to modify and compile the code (PSoC creator is freely available from Cypress semi).

Offline Intra

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Re: Next Gen DRSSTC
« Reply #124 on: November 21, 2020, 06:48:00 PM »
Netzpfuscher pointed at the place where the range can be changed - treat it as an opportunity to learn how to modify and compile the code (PSoC creator is freely available from Cypress semi).

My apologies.

Offline Intra

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Re: Next Gen DRSSTC
« Reply #125 on: December 04, 2020, 08:03:04 PM »
QCW MIDI is awesome :3


Offline pc50kd

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Re: Next Gen DRSSTC
« Reply #126 on: January 23, 2021, 02:35:18 PM »
A while ago I build a coil using the UD3 driver. Back then I used the pre-compiled firmware posted by Netzpfuscher.
The coil worked great except for the lead time compensation.

Recently I saw that the bug concerning the lead time compensation was fixed. So I updated my UD3 to the latest firmware.

After doing this the UD3 only communicates over the onboard USB connection. On the RX and TX pins for the UART connections I get no data at all.
I tried enabling and disabling the min protocol and various other settings but this made no difference. The board only communicates on 480600 baud with plain UART over the onboard USB connection.

Am I missing a new setting in the firmware or is there something else I might be doing wrong?

If someone could point me in the right direction it would be greatly appreciated.

Offline TMaxElectronics

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Re: Next Gen DRSSTC
« Reply #127 on: January 24, 2021, 10:13:16 PM »
I remember the UART pins accidentally being swapped in a previous firmware revision. Did you try reversing RX and TX?

Offline acobaugh

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Re: Next Gen DRSSTC
« Reply #128 on: January 25, 2021, 07:33:26 AM »
Looking to build one of these boards to swap in my big 8" coil to replace the existing UD2.7C. Does anyone have a kicad version of this board? I've been looking at https://github.com/Netzpfuscher/UD3_Kicad, but it looks like that project differs from the original Altium version, and without access to altium, I'm having a hard time figuring out what those differences are, and why. Any help is greatly appreciated!

Offline Netzpfuscher

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Re: Next Gen DRSSTC
« Reply #129 on: January 25, 2021, 01:42:42 PM »
I never finished the Kicad version. Only the Altium Version is up to date. I initially worked on the Kicad to make the board 4 layer and integrated ethernet. But now with the Fibernet everything is obsolete.

There is at least a board importer in Kicad which on the first look works great.

High Voltage Forum

Re: Next Gen DRSSTC
« Reply #129 on: January 25, 2021, 01:42:42 PM »

 


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