E3Pro auto home malfunctioning

[phranch]

I've done quite a bit since last post but I won't try to iterate it all. Briefly, the new board arrived and was installed, updated the firmware and now the blue screen appears, blinks occasionally but nothing else happens. So, I'm clearly in way over my head, way above my pay grade. Having to publically and continually show my ignorance, and it only gets worse, is rapidly eroding the little confidence I have left. Apparently I'm unable to succeed because I lack so much basic knowledge about the fundamentals. For that and whatever other reasons I really believe I need personal, hands-on guidance so I can immediately ask questions that arise as we move along, somewhat akin to elementary schooling! I've tried to find 3D fans locally without luck. Am now posting ads in news-paper and we'll see how it develops. It is not equitable to those of you who take the time and interest to help me, as I am unable to make proper use of your advice. When I can find that in-person help I intend to continue. Finally, it is extremely difficult for me to express how much all of your efforts mean to me and I appreciate everyone so much. Thank you, thank you, thank you!
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[curious aardvark]

yeah, what usually seesm to happen is that the new board doesn't have the correct settings for whatever screen you have. And with marlin you have to download seperate screen packs to ide before you attempt to flash the bloody firmware and make the bin file.

It's one reason I really dislike marlin, it's just so bloody complicated rto get it to work.
Once it's working it's fine. But otherwise it's a bloody nightmare.

Did you try flashing the old board back to a fresh copy of the firmware you were using ?

Do you have a makerspace in your area ?
I know they're alot more common in the states than they are over here in the uk.
Somewhere like that would be stuffed full of anoracks just begging to fix your printer :-)

But yeah - screens and marlin, definitely not good.

what is the new board ?

[Martin_au]

This sounds suspiciously like the problem identified here.https://focalise.ie/fix-ender-3-pro-blank-screen/
Give that a shot and see if anything changes.

[phranch]

Well, Martin and Aardvark, you must be gluttons for punishment, but if you're still game, I'll HAPPILY follow you! Now I'll be referring to your 4-20 posts and pray you can understand which of my comments/questions apply to your individual post. The board I removed from the Ender 3 Pro was a V1.1.4 and I replaced it with a Creality V 4.2.7 (still in there). Aardvark, you last asked if I had tried flashing the old board with a fresh copy of the firmware I was using--No, I didn't. And Martin, you suggested the FOCALISE post calling for 'Ender-3 Pro_4.2.2_Firmware_Marlin2.0.1 - V1.0.1.bin' firmware, which sounds good to me. I am willing to re-install the old V1.1.4 board and flash with the suggested 4.2.2 firmware--does that make sense, flashing a V1.1.4 board with V4.2.2 firmware? (Shows how dismal my thinking is!) Is that a reasonable next step? An aside, condolences for Prince Philip--he will be missed. Also, everyone I know supports GB's EU divorce--I just hope the current DC mob running (sic!) our country will fully support you as Trump stated he would do.

[curious aardvark]

we're damn glad NOT to have trumps support for anything !
That was a surreal 4 years and no mistake. I still can't figure out how it happened.

The weird thing about phillip is that most of us had no idea of all the thuings he'd done until he died.
Self promotion is not something the royal family go in for, that and still sending their progeny into harms way on active military service is why we still have them.
That and billions of pounds in tourism money.
But in this day and age for a 'royal' family to STILL put their children in harms way in service to their country - is something special.
I know harry gets a lot of stick. But if he'd been born 500 years ago, that man could have conquored the whole damn world. His armies would have followed him into the teeth of hell.
Very impressive young man. Just watch him at the invictus games with the ex-servicemen.
The english media are a collective bunch of arseholes. But that's a rant for another day :-)

back to your printer :-)
personally I would flash the new firmware on the NEW board. And use the older firmware on the older board.
Seems like a safer bet all round.

[Martin_au]

Well, Martin and Aardvark, you must be gluttons for punishment, but if you're still game, I'll HAPPILY follow you! Now I'll be referring to your 4-20 posts and pray you can understand which of my comments/questions apply to your individual post. The board I removed from the Ender 3 Pro was a V1.1.4 and I replaced it with a Creality V 4.2.7 (still in there). Aardvark, you last asked if I had tried flashing the old board with a fresh copy of the firmware I was using--No, I didn't. And Martin, you suggested the FOCALISE post calling for 'Ender-3 Pro_4.2.2_Firmware_Marlin2.0.1 - V1.0.1.bin' firmware, which sounds good to me. I am willing to re-install the old V1.1.4 board and flash with the suggested 4.2.2 firmware--does that make sense, flashing a V1.1.4 board with V4.2.2 firmware? (Shows how dismal my thinking is!) Is that a reasonable next step? An aside, condolences for Prince Philip--he will be missed. Also, everyone I know supports GB's EU divorce--I just hope the current DC mob running (sic!) our country will fully support you as Trump stated he would do.

Board numbers are good. Maybe hold off on flashing firmware for a sec.
Looks like that board should have come with firmware pre-installed. https://www.creality3dofficial.com/p...inboard-v4-2-7

Try flashing the suitable firmware from here (probably Ender-3 Pro- 4.2.7-TMC2225 Marlin2.0.1 – V1.0.1 )https://forums.creality3dofficial.co...s/ender-3-pro/

Then let us know what happened.

Aardvark, why do you think the endstops are working? "Raise, pause (sense), raise" is a common indication that the Z-endstop is permanently triggered on.

[curious aardvark]

endstops were tested. gantry stops at endstop and then moves back up. If the endstops stop working the motors keep moving the part. That did not happen.
It clearly registered the endstop.

I realise you only google stuff martin, but I tend to go more on 8 years experience with 6 different 3d printers - actual real world experience.
And as a rule when endstops stop working, they just stop working. 90% of the time it's the wiring, the actual switches are such simple and robust mechanisms that they tend not to die.
Everything here indicates that the endstop is fully functional.

Seems pretty clear.

[Martin_au]

endstops were tested. gantry stops at endstop and then moves back up.

Where was that written?

If the endstops stop working the motors keep moving the part. That did not happen.It clearly registered the endstop.

That is not correct. There are two modes. If an endstop fails to trigger, then the motors keep moving along that axis. If an endstop is permanently triggered on, then you get the weird behaviour when an axis, 1) moves back to release the endstop, 2) stops and begins the sensing routine, and 3) moves back again as it detected the endstop again immediately., which is what the OP reported. Very common behaviour when a firmware has the sensor pin's high/low configuration incorrect for an endstop.

I realise you only google stuff martin, but I tend to go more on 8 years experience with 6 different 3d printers - actual real world experience.

Six whole printers. Wow!

And as a rule when endstops stop working, they just stop working. 90% of the time it's the wiring, the actual switches are such simple and robust mechanisms that they tend not to die.Everything here indicates that the endstop is fully functional.Seems pretty clear.

Agreed. Most of the time, when an end stop stops working, then it's a broken wire and the endstop won't trigger. However, the OP's symptoms don't suggest that is the problem. In this case, an endstop jammed "on" does explain the symptoms. It could also be a glitch in the firmware. M119 is a good spot to start........well, once we fix the blue screen problem of the new board.

[Martin_au]

Ok, just did some googling on the Ender. It has NC endstops (normally closed). That was a bit of a surprise.

What this means is that the disgnosis (that an endstop was permanently triggered) was likely correct, but the cause was much simpler – likely a broken wire.

In an NC endstop, the sensor is always closed, with the pin pulled to ground. When the switch is toggled, the circuit opens, and the pullup makes that pin high. If a wire breaks in an NC endstop, it has the same effect as when it is triggered and acts as a failsafe.

Phranch, once you get the board and screen working again, I'd look closely at the wires to your endswitch. Assuming that the Ender 3 is running NC endstops, then it's likely that the wire or connection is dodgy.

[phranch]

It is clear I am among my betters and enjoying every minute! Martin, please forgive my questioning but here is an area of continuing confusion for me. When I go to the official Creality forum you cited, it opens with the item "Ender 3 Pro (V4 mainboard) Marlin201 - V0.0.5 (Default Firmware)" dated 19 Sep, 2020 being HIGH-LIGHTED, while just above it dated 20 Aug, 2020 is "Ender 3 Pro-4.2.7-TMC2225 Marlin 2.0.1-V1.0.1". Further, at the www. creality.com/download site is listed "Ender-3 Pro 4.2.7 mainboard firmware (32bit) .zip". Which one do you think I should use? In different places I have read that versions are often the same, or very similar, and that more than one may work. For some one floundering as I am, this constitutes fatal overload! Hope you can understand my situation. I am now checking the wiring and connections again and once I receive your further advice, I'll re-flash.
Aardvark, I have re-discovered the adage that you are never to old to (re)-learn! Also, I just experienced the renowned British quick wit, sharp barbed and mastery of the language! What I re-discovered was 2 sins never to make--talk politics and offer un-invited opinion. Game, set, match. Touche! As with most blundering fools, I meant no harm or offense. Here in the states a growing majority are recognizing that our country and freedoms are under assault on so many fronts, freedom of speech, right to bear arms, religion, immigration abuse, history rewriting, double-standards, ad nauseum. Our current Socialist leaders are actively and aggressively undoing all the good practices and policies we believe Trump was on-target with, including abridging of the Constitution, buffoon though he may have been with elements of his personality. I fully respect your opinions and feelings and wish our beloved cousins in Great Britain the very best in all endeavors. And I especially appreciated your help and further interest!