Re: Setup and bed levelling

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Roxy
But really... you are better off moving the endstop to the MIN side (left).

Why do you say that?

I could move it, obviously, and I'm happy to if you recommend it, but everything is configured now. I do plan on making a bunch of mods to the printer as soon as it's printing. One of those mods is sticking optical endstops in locations that are hard to accidentally bump/change.

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Roxy
Some people are using UBL without a Z-Probe. But that is not officially supported. It will be soon enough. But if you don't have a Z-Probe, just say you do... And we can avoid the UBL commands that use the Z-Probe. If that is what you decide to to, just enable the BL-Touch in Configuration.h and the rest will take care of itself.

That was pretty much what I'd expected. I'm sure I've read some notes about it in a github issue, but can't remember anything specific now.

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Roxy

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G
Check things seem to be calibrated. Needed to adjust the extrusion steps quite a bit. Everything else looks sane.

I think you would be better off adjusting your Configuration.h E-Steps instead of trying to use M211. But unless something has changed... The E-Steps should be correct for the FT-i3-2020 in the Examples folder.

I measured 95.825. But I haven't managed to print anything yet. My Configuration.h contains

#define DEFAULT_AXIS_STEPS_PER_UNIT   { 80, 80, 4000, 95.825 }

The Folger beta firmware on google drive contains

#define E_STEPS 93

While the Marlin example says

#define DEFAULT_AXIS_STEPS_PER_UNIT   { 80, 80, 4000, 52.2 }

I expect my measurement is wrong, to be honest, I only looked at the Folger provided configs the other day, and it can't be a coincidence that I got so close to their number. I just wanted something in the ballpark to get me going.

( Just quickly... There were some end stop inversion things i changed too, I've run out of time today, but I'll give you my whole config another time.)

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Roxy
Just turn on the BLTOUCH option in Configuration.h and we can set things up without a Z-Probe. It will take an extra iteration of G26 and G29 P4's but that won't be a big deal.

Done. But wow! Took all day! (I'm working through your message as I go) I have raised an issue on github.

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Roxy
Work on getting your machine to use the Z-Min endstop to home even though you have the BLTOUCH defined. And make sure you can print some small item at the center of the bed with no Auto Bed Leveling active. At that point, we will be ready to bring up UBL.

I'll do this next, but I'm not sure I have time left today.

(Yes. Out of time. But I'll have a crack at printing in the morning.)

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Roxy
Attached are some .STL files for you to print. If you go on eBay and get a MAX_ES08A servo (for $5 including shipping) and some 608-ZZ bearings (http://www.ebay.com/itm/2Pcs-608ZZ-Deep-Groove-Ball-Bearing-For-3D-Printer-Prusa-Mendel-RepRap-S4-/182272490722?epid=0&hash=item2a70497ce2:g:dMwAAOSwFdtX0OnR) and a these micro-switches (http://www.ebay.com/itm/5Pcs-Micro-Roller-Lever-Arm-Open-Close-Limit-Switch-KW12-3-PCB-Microswitch-WF-/122497042115?hash=item1c856486c3:g:1hAAAOSwfpVZGQsi) everything should just assemble correctly. You probably need to order 4x M3 45mm long bolts too. That is because the plate to hold the servo and Z-Probe is 5 mm thick and the current screws are M3 40mm long. You can get those on eBay too.

Those are awesome! Thank you very much. And I appreciate you taking the time to add links too :)