Testers Needed

[jimc]

Josh, yes all my machines have an e3dv6. They are a little longer than a v4 but no longer than the v3b, i think a little shorter actually, and definitely not 30mm longer. The firmware is the one you posted. I made no changes other than the thermistor table to #5. If the button wasnt greyed out when you went back then the whole thing would work ok. The nozzle doesnt hit by much. I bet its only 5mm or so.

[Josh]

Jimc - I just went back and checked my code, the number I quoted earlier was off a bit - it moves to "Z10", which on my machines usually ends up ~20mm from the nozzle; I've also been using exclusively V4 hotends, but did test it works with the V3B without issue. So if your hotend is longer than a V3B, which is longer still than the V4, it could certainly explain the collision. I'll look at ways to change that easily - first pass, I may just compile a custom version for you to use, with that set to longer.

The problem with just going back and using the "set starting height" button is one of code - the current code basically does exactly what I said before (reset offset, move, set offset to inverse of position), but if you were to go back and try to adjust, you need to take the current offset value, and add the new offset adjustment value to it, and then set it again. It's not a hugely different process, but different enough I wouldn't be comfortable having one button do the two different tasks, depending on if it's the first time you've clicked it, or the second.

[jimc]

Ok josh that sounds good. If you had the app stop it at -30 instead if -20 i think that would be more than enough. I also have a 1/4" mic6 plate so that is probably accounting for an addition couple few mm over the glass as well. I know many if us are using the 1/4" plate and also the e3d as well.

[Spotopolis]

I just realized that the Quick Start App might be considered as part of the new system, so I hope posting screen shots of some of the pages didn't go against Rick's "no photos" request. I assumed that only applied to the hardware. If not, I will delete them or an admin can do so.

Jim, I'm also running an E3D on my otherwise stock setup and had no issues with collisions during the setup, so your Mic plate must be the cause. Mine stopped about 10mm away. I also used the new firmware and only modified the thermister value.

[jimc]

Hmm thats odd. The alum plate would only account for a couple mm. I wonder where the difference is

[Josh]

jimc - it could be the entire stack: small differences in Z endstop position, hotend length, bed thickness, and leveling screw height. If you go into your favorite gcode sender (or even the Advanced tab, Gcode button in the app), and send:

"G28"
"G1 F3000 X215 [or whatever X value will get the hotend clear of the bed]"
"G1 F2000 Z10"

where does the bed end up in relation to the nozzle?

[jimc]

ok a little investigation and i think your right josh. its just alot of little things adding up. one big thing was quite simply i didnt have the z endstop all the way down against the bottom of the printer. looking closely, obviously i have the different hot end maybe adding a few mm, the alum plate a couple more. i also have a misumi linear slide and looking at my other printer it appear the carriage is a couple mm higher. in any case when i dropped the endstop all the way to the bottom of the printer i did get it to clear the nozzle but not by much. maybe 1mm if that and i had to pull the screws from the lid of my electronics box (not yours) to do it because the y endstop spacer and screw would hit those. i can get this whole thing to work now but man its so close. i know all these little issues are from me changing some things on the printer but is it still possible to add an extra 5mm of breathing room added into the app? instead of your z-20 maybe z-25.

[sprior]

Sounds like there should be a way in the app to change the default offset (only if needed), because people like jimc are going to need to be supported.

[sprior]

Is there a version of the test firmware that supports dual extruders, or do I only need to change the number of extruders value and nothing else?

[jimc]

Sounds like there should be a way in the app to change the default offset (only if needed), because people like jimc are going to need to be supported.

yeah that could be another option. default to the original 20mm but maybe have that value user changeable in a preferences/settings tab. the e3dv6 is a tiny hot end. i swore it was smaller than the v3b but i could be wrong. down the line an m2 owner replaces just 1 or 2 things and they cant use the app anymore. we all change stuff on out printers to some degree. i think very few people keep them 100% original. a setting like that would just make the app less limiting......just a thought.