forked from MarlinFirmware/Marlin
-
-
Notifications
You must be signed in to change notification settings - Fork 386
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
2 changed files
with
15 additions
and
13 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
@Jyers
Is this commit related to the hardware mod that you have to solder a wire between extruder stepper driver pin and the microcontroller in order to work?
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Whether or not you need the mod depends on exactly which drivers your board came with. The TMC2209 doesn't need the mod. http://support.th3dstudio.com/hc/guides/community-guides/creality-v4-2-x-board-driver-codes/
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
The 4.2.7 is always TMC2225 I believe (different IC footprint, not interchangable), but my 4.2.2 came with TMC2209s
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
@t3chguy that's a very interesting information, my 4.2.2 is marked "B" and I was able to use LA without the MB modification (but the extruder stepper motor become very noisy). Now I've done the MB modification, still can use LA and the stepper motor is very quiet, however I get the "TMC Connection erro" and having a BMG clone extruder I had to double the steps to 796 (usually around 415), I believe that the driver changed from 16 to 32 steps.
I still have plans to hijack another pin to fix the "TMC connection error" probably I will remove one of the heatsinks to confirm the driver model.
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
And i wondered what the heck those pencil number on the SD card means. haha.
My 4.2.2 had TMC2209 but i toasted it.
Replaced with a 4.2.7 and it has the TMC2225.
So i should consider doing the mod.
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
the fact LA worked at all without modification + the
Bmarking makes it certain that you have the TMC2209 @msdossajo - I wouldn't suggest removing the heatsinks, thermal epoxying them back on is a pain.ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Anyone has a detailed photo about the stepper driver pin that we must solder the wire ?
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
I modded my E TMC2225 into Spread Cycle mode with a tiny jumper wire and that let me use LA and have more consistent extrusion and higher torque, at the cost of some noise due to losing StealthChop.
For 4.2.2 board the pin to solder is
that was required for TMC2208
I didn't take a photo of my TMC2225 SpreadCycle mod apparently
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
@t3chguy
i supposed that the same applies for the 4.2.7 board. Right?
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
The 4.2.7 board is quite different, the TMC2225 package is a different footprint. I did not bother trying to get my TMC2225 into UART mode, I just put it into SpreadCycle as that's all I needed to change.
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
@t3chguy
Wait... What do you mean by that? If you put it in SpreadCycle you dont need the mod?
And if yes What change do i have to make in the firmware ?
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
The steppers are in standalone mode so you need to solder to get it into SpreadCycle mode. The original 4.2.2 TMC2208 mod puts the driver into UART mode where then the firmware can set it into SpreadCycle/hybrid mode and thus use LA.
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
@t3chguy
ok i got it.
So in conclusion for the 4.2.7 board solder must be done. And i supposed that the pin must be the same.... To the R19 pull resistor.
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
I have read with Klipper LA will work without mod
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Don't use that outdated mod, soldering directly onto that chip is a pain and not necessary. Check my post here for what I did: #707
@tome9111991 Klipper can brute force it because is uses the pi to do all the processing, Marlin doesn't have that luxury
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
@Jyers
I know about the "free pins" in the SWDIO pin as a few months now i have use on of them to power off the extruder fan when temperature is below 50 degrees celsius.
#define E0_AUTO_FAN_PIN PA13thanks anyway
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Any chance that you can share your circuit design? I'm sure a lot of people would appreciate seeing how you did your mod?
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Not necessarily, if someone has managed to enable LA using the spread pin on the 4.2.2 TMC2209 board, then it should be possible to do the same on the TMC2225 as it has the same spread pin.
But interestingly, through information gained from the marlin discord, it might not even be necessary to enable spread cycle to achieve Linear Advance on any board that doesn't have TMC2208 chips, the reason LA doesn't work on 2208s in stealth mode is due to a design flaw, the other chips do not have this flaw, so in theory should work in stealth mode, it just needs LIN_ADVANCE defined in the configs and possibly S_CURVE_ACCELERATION commented out.
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Could you share your method please? The more information we have, the more clearly we'll be able to see who needs to do a uart mod, or a spread pin mod and who doesn't to get Linear Advance.
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Of course.
In a few days i will provide a detailed information about the circuit and how i did it.
You can check the finished circuit that does the job
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
My board is 4.2.7 with TMC2225. I did the changes in configs files and it didnt work...
So i think soldering is one way solution.
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
@AngleV Thank you for sharing your fan mod!! it looks like you're right, although you probably only have to tie the spread pin high/low, so it's probably much less hassle than any of the existing mods.
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
That is exactly what I did for my 4.2.7 with TMC2225 and it works great. Simple solder job, slightly noisier motor but more torque and runs cooler.
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
@t3chguy
Forgive my ignorance but i am overwhelmed righr now with all this tech stuff.
I would appreciate it if you can gve us more details on how exactly you did it
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
@AngleV
I soldered a tiny jumper wire from SPREAD (pin 19) to VCC_IO (pin 16) to switch it in Standalone mode from StealthChop to SpreadCycle
SPREAD and VCC_IO are on the side away from the board edge on the 4.2.7
Datasheet http://img.ekeic.com/ekeic/9981564407175.pdf
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
@t3chguy
Ok i got it now.
I suppose you must remove the heatsink to do the job easily.
Is that true?
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Depends, on one of my drivers the heatsink was so far off to the side it would have been fine, but in my case I did need to remove it
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Ok much appreciated!!!
Still i am waver if it worths to do it or not
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
@AngleV Thermal glue is all you need to put the heatsink back on and it's cheap to buy, the 2225 chip is also much easier to solder to, as it has decent sized pins on it, it's still surface mount but way easier than soldering to the stm32F103 or the 2208/9 chips.
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
@Reggi3
Any idea or advise how to remove the old thermal glue from the board to expose the driver's pins ?
Also which exactly changes should be made to the configs for this mod ?
All the above that Jyers has made or there is no reason ?
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
to remove the old glue, I used a toothpick and tweezers, once you get the bulk of it off, you can use some alcohol to remove the rest.
And for the 'spread pin mod' you just need LIN_ADVANCE defined and S_CURVE_ACCELERATION undefined (commented out).
There's one more define that I'm not 100% certain on, whether it's used internally by marlin or whether it has to talk to the TMC chip and that's: #define CHOPPER_TIMING CHOPPER_DEFAULT_24V. iirc the original tmc uart mod didn't have that, that was something I changed after research (and the fact that we use 24v for our motors).
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
LEGEND
Now I don't have to edit a pins file randomly
This is the guide I was using in the past, just for posterity
https://drive.google.com/file/d/15cUf10lMxW4NUHE9qVAlamXmULdrOJxz/view
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Well, i did the uart mod by connecting the PDN_UART to the SWCLK which is the PA14 pin.
i did all the changes to the configs and i get a TMC CONNECTION ERROR.
Anyone has an idea what could be wrong.
I am sure about the soldering by the way.
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Did you change this line to PA14?
#define TMC_UART_PIN_E PA14You also might like to take a look at this, it looks like other people have already done this mod!!:
MarlinFirmware#16076 (comment)
The poster of that fix lifted a pin but it's probably easier, if you're brave enough, to cut the trace between the diag pin and the spread pin.
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
@Reggi3☺️
Yes i change the pin to PA14.
I guess i have to separate the pin 17 and 18 that are tied together as the other guy said.
Last change for success
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Well that did the trick. By lifting the DIAG pin i got it finally working.
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Perfect :-)
ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
little off topic but...
@Reggi3
As i promised.
Below you can find the schematics for the little custom pcb that controls the Cooling Fan.
It is just a TIP120 transistor that works as a gate, a transistors and a diode.
The principle is very simple.
As soon as the transistor gets the signal from the mcu pin (in my case the PA13) it gets saturated and allow the current to flow through.
Feel free to ask if you need further help.
You must change your Configuration_adv.h the line
#define E0_AUTO_FAN_PIN -1to#define E0_AUTO_FAN_PIN PA13and#define EXTRUDER_AUTO_FAN_TEMPERATUREto the value that you want the fan to turn off. I set mine to 50 degrees.ecb49cbThere was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
@AngleV I think this is on very topic :-D I did the upgade to the original mod, hopefully to encourage the Ender 3 community to look at their hardware and make things better for themselves.
The mod is about Linear Advance but also hints at there being lots of extras that we could do if anyone wanted to try, also to get the community talking about how to affect these changes in hardware and software too.
Thank you for sharing @AngleV and thank you ALL in the thread for sharing too. Hopefully we can/will shed more light on the 4.2.x boards and features/mods we'd like to see in the future.