Ultimate Marlin 2 + BLTouch for Ender 3 (8-bit) with OctoPrint

I have complied everything and uploaded with out any changes. When I auto home, it will home the x,y. It will safe home for z; as far as returning to the middle of the bed. It will deploy the BTTouch probe, but it will not move down to the bed and touch off. It just deploys the probe the last time and the probe stays down, with the blue light. The screen on the ender 3 says Endstops Z. That's it. it will not do anything else. X  159, Y122, Z ??/20. If I try to lower Z through the motion feature, Z does nothing. It will move up. If you try to make it go down, the numbers will change (decrease) but Z does not move down at all. 

I have been working on this thing for days and I still have this same issue, The only thing I have done other than the basic install of Creality's kit is removed the resistor on the board for Z. This issue was present before I did that. It made no difference at all. 

Just installed my first BLTouch on my Ender 3. After G28, Both ways of running bed leveling (before every print, and restoring a mesh after homing) are completely ignored.  Probe and G29 is working just fine through Octoprint Terminal. If print is paused in Octoprint, M420 S1 works to turn on bed leveling but that is not at all my desired workflow.

Things I have tried:

M400 after G28 and G29

Erasing all other custom start GCODE

#define RESTORE_LEVELING_AFTER_G28 and //#define RESTORE_LEVELING_AFTER_G28

"G28

 G29"

"G28

 M420 S1"

 And a whole lot of googling looking for the answers to my questions

 

Setup:

Ender 3

Creality 1.1.4 board

Marlin 2.0.5.4 Ultimate from danbp.org

Ultimaker Cura 4.9.0

Octoprint 1.6.1 on a windows machine

I flashed the Compiled Ultimate Marlin (HEX) for Ender 3 + BLTouch + TMC2208 version of your firmware and flashing completed sucessfully. I still have the stock display connected without the adapter board, which is now beeping constantly (high pitched noise). I beleive this is because pin 27 expects the BLTouch which I still must finish connecting. I am trying to upload a new version with BLTouch pin changed to 29, or downgrade to 1.1.9 but in all cases I receive an error

avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00

The board seems to boot normally and I can access menu functions. I can connect with OctoPrint and the board seems to reset when I try to flash with Avrdude but now I am stuck. Does your firmware version overwrite the bootloader? Do you have some advice for how I can reflash (I do not have the avrflasher at the moment).



Thank you also for sharing your efforts and any advice you could provide.

Hi,

Thanks for your work.

Do you know what the differences between compile with "mezli" and "melzi_optimized" ?

"melzi_optimized" use less space on ROM. Why ? and is it working as well ?

Thanks

Recently, Marlin 2.0.5.4 was released.  I recognize it was essentially a maintenance release, however do you plan to update your build to this latest version?

Hi,

Awesome guide and build! Thank you!

I do have 2 questions however:

1) For S Curve Acceleration to work correctly, do I need to disable Jerk and Acceleration control in Cura?

and

2) I'm new to BL touch. I've installed it, used this build and set my probe offsets.

I have this fan duct: https://www.thingiverse.com/thing:4401624 with the spacer: https://www.thingiverse.com/thing:3072487

I used M851 to set Offset: X: -47 Y: -8

Next I used G28 to home.

Next I lowered the Z axis to position the nozzle close to the bed with a post-in in between and this gave me -3.4 as offset which I set with M851 Z-3.4.

(I have a glass bed which is quite thick).

M500

M501

Now, when I do G28 again it moves the Nozzle back quite above the bed, so I use G1 F60 Z0 to position it back to the real Z home.

I have noticed that sometimes it puts it back nicely where I put it manually when defining the -3.4 offset, but sometimes it seems to position it around 0.5 higher... This without touching the bed or glass.

What am I doing wrong?

Thanks a lot!

Frederick

Hello Daniel

In configuration.h in the section on TMC2208 in the ultimate version you have "//" in front of #define X_DRIVER_TYPE TMC2208_STANDALONE // Customized DBP. Is this correct?

Hi Dan!

I've been looking for a solution for this for days now and I'm glad to come across a post that provides the HEX file because for the life of me I keep getting errors when trying to enable advanced pause feature & filament change through VS when building.

The only issue I have is that I can't find a version of your HEX where you provide SD card support + BLTouch + Advanced pause & Filament change. If you'd be able to compile a version like that in HEX format all my problems would be over...

If you could provide me another solution I'd be happy to hear it!

Best,

Nathan

Hi, great work!, Thank You!

I realize in the new version 2 of marlin you got rid of the Preheat bed, level and store feature to save space. I was hoping that forgoing support for the SD card, that feature would be put back in this ultimate version. But, alas, I can't find it in the menu. Or am I mistaken?

Cheers,

Will.

Thanks for this excellent guide. I am new to 3D printing, purchased an ender 3 pro last month. And added bltouch abl. But not that happy with the stock firmware. And I found your blog post. How I find if my printer’s main board is 8 bit or 32 bit.

First, thank you for this excellent description and firmware for adding BLTouch to an Ender 3.  However I think your SHA-256 is incorrect for all three packages.  Here is what I calculated for the source code:

owner@iMac Downloads % shasum -a 256 Marlin-2.0.5.3_Ultimate.zip
625e74b88e8ccee48c7d463a1b20d777403152665af83c5609f9006fc414904f  Marlin-2.0.5.3_Ultimate.zip
owner@iMac Downloads %

This does not match the SHA-256 what you have listed.

I want to say thanks first for the firmware, it was the one thing that got my Ender 3 Pro running properly using the BLTouch.

I have noticed - "Warn: Not sending "M141 S0", printer profile has no heated chamber " scrolling in the terminal window on OctoPrint. I think line -"#define TEMP_SENSOR_CHAMBER 0" needs to be commented out to "//#define TEMP_SENSOR_CHAMBER 0" to prevent this.

Plus, I think someone else might've mentioned that the version displayed onscreen still says v.2.0.5.1 instead of v2.0.5.3 like in the About Printer > Printer Info screen.

Otherwise, awesome!!!

I'm still battling the upgraded V1.1.5 board and extruder stopping randomly. I'm sure it's related to the TMC2208 and Marlin, as I've seen many issues form other people posted. Creality sent me a replacement for my original V1.1.4 that was having issues with x-axis. I received the V1.1.5 only to find it worked once then died, so Creality sent another replacement that has yet to arrive. In the meantime I ordered a new ATmega1284P and swapped it out. I assumed that because I could not flash the chip that it was dead and it came back to life again.

Long story short, I'm still waiting on the second replacement Silent board to confirm the issue is not a faulty board.

Has an information, it's still written CUSTOM_MACHINE_NAME "Marlin 2.0.5.1" inside configuration.h wich is confusing at first. When correcting it, it works perfectly for now.

Hello, Daniel,

Thank you for your firmware and all your precise indications. I can barely imagine the regular work it represents.

However here is my problem, when I do the G29 function the X axis goes much too far.

I am using the precompiled version Package 3: Compiled Ultimate Marlin (HEX) for Ender 3 + BLTouch + TMC2208

Currently I have 2.0.5.1 is 2.0.5.3 fixes the problem?

Could you please check. Thank you very much!

Translated with www.DeepL.com/Translator (free version)

After flashing this version of firmware I got an error on the LCD saying Error: EEPROM. Onlything I changed was the probe offset.

Is there something else I need to do to get it to work correctly.

Also I ran initialize EEPROM in the LCD menu and that seems to work but afterwards Octoprint just kept rebooting the controller trying to connect to it.

You could see on the LCD it was just constantly rebooting. When I stopped Octoprint manually from SSH the rebooting cycle would stop.

Not sure this is 100% compatible with OctoPrint.

Hi Dan

First i want to say this is awesome and Im really grateful for your work.

So I have this weird issue.

When doing a G28 homing the Z the first time the bltouch activates but it seems to ignore it for the first activation but after the second activation it works like it should. but not after the hotend hits the bed.

It will do a second check and not hit the bed. and then go about its way and print just fine.

if i do a g28 it does the 25 point bed test no issues does not hit the bed.

my current start code is this.(Hitting the bed happens any time I run G28)

M140 S55
M105
M190 S55
M104 S200
M105
M109 S200
M82 ;absolute extrusion mode
M201 X500.00 Y500.00 Z100.00 E5000.00 ;Setup machine max acceleration
M203 X500.00 Y500.00 Z10.00 E50.00 ;Setup machine max feedrate
M204 P500.00 R1000.00 T500.00 ;Setup Print/Retract/Travel acceleration
M205 X8.00 Y8.00 Z0.40 E5.00 ;Setup Jerk
M220 S100 ;Reset Feedrate
M221 S100 ;Reset Flowrate

G28 ;Home
M420 S1
G92 E0 ;Reset Extruder
G1 Z2.0 F3000 ;Move Z Axis up

not sure what im doing wrong. I hope i explained it well enough. tried looking around the web but cant find anyone with this issue.

also note i have moved the touch to PIN 29.

changed it in config.h and in "pins_MELZI_Creality.h"

Thanks

Simon

Hi,

I'm trying to compile and flash my ender 3 pro with the source code provided, i have the following error in sketch:

Sketch uses 131050 bytes (100%) of program storage space. Maximum is 130048 bytes.

I tried to disable some features following this :https://www.crosslink.io/marlin-2-0-memory-usage-by-feature/ 

but almost everything was off.....

If i use the .hex provides it will overwrite the bootloader? I'm currently flashing directly with usb

thanks