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Happiness with BlTouch sensor in M2?

Posted: Wed Jul 31, 2019 4:55 pm
by jferguson
I've never been happy with the leveling routine for my M2. Not that it doesn't work, but i have been unable to understand the syntax/logic of the process. Despite this, I have been able to make it level and keep it there, but I would really like self-leveling and height detection hence my interest in adding a BlTouch sensor.

If you have one and did the modification to your M2 yourself including the Marlin changes, do you feel it was worth the effort?

If yes, and it isn't a hassle, can you point me toward a good source of counsel for doing this? Also recommendation for bracket which I assume i will print from PETG? Did you get your kit from Amazon?

It's ok to tell me if you think this is a ridiculous request.

Re: Happiness with BlTouch sensor in M2?

Posted: Wed Jul 31, 2019 10:41 pm
by airscapes
I was interested in it as well but as you mention there is a bit of firmware work I would rather not mess with. Will be interested in how it works out if you find assistance.
My gantry was slightly bowed so I made a mount that slides up into the extruder mount once it and the cooling fan are removed. The mount holds a DI with the return spring removed so the pin rides on the build plate without pressure. Then you run the gcode and write down the reading. Takes a bit of time but you can get the bed as level as physically possible. This will also let you shim the X rail, I used aluminum foil folded as many times as needed to get the desired thickness.
viewtopic.php?f=7&t=7174&p=38188&hilit=gantry#p38188
20190321_195026.jpg

Re: Happiness with BlTouch sensor in M2?

Posted: Wed Jul 31, 2019 10:58 pm
by jferguson
One of Sthone's files for his improved cooling extruder head (my terms, not his) refers to BlTouch. Sthone, do you use it?

I liked his blower cooling setup.

Re: Happiness with BlTouch sensor in M2?

Posted: Thu Aug 01, 2019 1:11 am
by sthone
Sorry I have not used it.... that was added on a request and I never heard back whether it worked or not but you can try asking the guy in the comments section on the Thingiverse page if he used it.

Re: Happiness with BlTouch sensor in M2?

Posted: Thu Aug 01, 2019 1:13 am
by jferguson
thanks,
i think I'm going to make your design and work it out myself. I'll let you know how it works out.

best regards,

john

Re: Happiness with BlTouch sensor in M2?

Posted: Thu Aug 01, 2019 2:32 pm
by makeal
sthone - it might have been me that asked for it :) thingiverse is down now so I can't check. I had it done on my M2e. It worked good and made things simpler. I also updated to the latest version of marlin which was 1.1.9. Its fairly straight forward update but I had to map the current 1.0.2 values of M2e stock firmware to 1.1.9 version, also enable bltouch. Few people on this forum helped and searching through the past posts also helped a lot. I was also in the process of using M3ID plate with bltouch mount with M3 cooling upgrade on my M2 but I ended up trading my m2 for another printer and never got around to doing it.

Basically bltouch replaces bottom z endstop and you home z by triggering bltouch and using its offset as your z0. I added gcode to my start script to do probing and enabling mesh and that was it. So before every print it would probe 4 spots, enable mesh and print away.

Here are few pictures i took
https://photos.app.goo.gl/9eiWKCWuthMtsUJaA

and here are few pictures I took of the M3 plate work i was doing.
https://photos.app.goo.gl/SJ6V7wAFPkyJK6rm6

Re: Happiness with BlTouch sensor in M2?

Posted: Mon Aug 12, 2019 3:33 pm
by terravion
Hey Makeal,

Iv been trying to get my BLtouch to work on M2 Rev E for a while now and still having troubles with the wiring. Can you share your wiring setup? Also been trying to use marlin 1.1.x and can't get it to upload. What version of arduino did you use?