Auto-leveling using an Inductive Sensor

[originalt80]

thank you for the information ill give it a shot and see if i can get it set up correctly

[ejcruz]

I just placed an order for a BLTouch.

I also did a trace of the pin-outs on the ATMEGA2560 board for the Z_MIN Axis, image is attached, in case the image is not clear, following are details starting from the top:
- top pin: connects to the ATMEGA2560 chip
- 2nd pin: GND
- 3rd pin: GND
- 4th pin: +5V

Hope this helps

https://photos.smugmug.com/3D-Printe...3/Z-MIN-X3.jpg

[curious aardvark]

definitely interested to see how this pans out.
Presumably you put the 'check for level' code in the startup gcode - or do you run the whole thing from the control panel ?

Not interested for my creator - as the has 4 level knobs at the very edge of the build plate so very very easy to level. Plus wrong firmware.

But the knp has three knobs in the centre of the plate which means the a tiny change in the centre is magnified to a large change at the edges. It's more guesswork than science :-)
Plus that has the right firmware.

[originalt80]

I just placed an order for a BLTouch.

I also did a trace of the pin-outs on the ATMEGA2560 board for the Z_MIN Axis, image is attached, in case the image is not clear, following are details starting from the top:
- top pin: connects to the ATMEGA2560 chip
- 2nd pin: GND
- 3rd pin: GND
- 4th pin: +5V

Hope this helps

https://photos.smugmug.com/3D-Printe...3/Z-MIN-X3.jpg

awesome i already have the bltouch sensor but im a newbie just getting into 3d printing and i really have no idea how to setup the gcode or any of it really. so glad to know u are pursueing this sensor as well. i will follow your progress with this setup and hope to get it going. thanks for all your info thus far.

[ejcruz]

Attached is an image showing how to connect the BLTouch sensor to the FFCP, this wiring diagram has also been confirmed by the BLTouch people, I have forward this to Flashforge for their confirmation.

https://photos.smugmug.com/3D-Printe...ch-FFCP-XL.jpg

[originalt80]

Attached is an image showing how to connect the BLTouch sensor to the FFCP, this wiring diagram has also been confirmed by the BLTouch people, I have forward this to Flashforge for their confirmation.

https://photos.smugmug.com/3D-Printe...ch-FFCP-XL.jpg

Great work.. you are the greatest.. i connected as per your previous suggestions and the sensor would turn on and do self test when turning the printer on but for the life of me i could not get anything else to happen. this would explain why. thumbs up

[ejcruz]

Sorry about that, it's hard not having the sensor, it looks like all you need to do is connect the orange cable to PB7, and the white cable to Z-MIN pin, if you like you can leave the other cable (+5v and GND) as per current connection, that should do the trick.

My BLTouch is due to arrive around 12th September.

[originalt80]

No reason to be sorry. without your help and suggestions i would still be sitting here scratching my head staring at this single page of the specs for the bltouch sensor wondering if id ever understand it. lol your help is greatly appreciated cant wait to see how this all works out.

one thing i was wondering about is a way to mount the sensor and a good location so that its close enough to the nozzles and not cause any issues with clearance around it. i searched all over for a printable bltouch mount for the FFCP but couldnt find one anywhere.

[originalt80]

looks as tho i do indeed have the correct board.... ATMEGA2560 board

https://www.dropbox.com/sc/cczunqeop...vi1-sqM_ZXJsKa

[jfkansas]

So am I missing something? Where is the circuitry and motors that levels the build plate?