ABL Servo and Ignoring of ABL routine... Please help improve my life

[mattanonymous]

I'm using the beckdac firmware on my i3v 10" and the first print off the sd card always ignores the ABL routine. What gives!?

Also, what can I do to make the ABL mechanism more robust? The TowerPro servo seems to get out of whack often and I can't stand the fact that I can't just hit print and feel confident ABL will "just work". Am I the only one experiencing this? Is there a better servo to get? Is there a better alternative available? I've seen BLTouch https://www.indiegogo.com/projects/b...-3d-printers#/ .

Thanks a bunch,
Matt

[cub22908]

I'm using the beckdac firmware on my i3v 10" and the first print off the sd card always ignores the ABL routine. What gives!?

Also, what can I do to make the ABL mechanism more robust? The TowerPro servo seems to get out of whack often and I can't stand the fact that I can't just hit print and feel confident ABL will "just work". Am I the only one experiencing this? Is there a better servo to get? Is there a better alternative available? I've seen BLTouch https://www.indiegogo.com/projects/b...-3d-printers#/ .

Thanks a bunch,
Matt

I don't know if this will help you or not, but it did me. I have had ABL for a year and sometimes the routine would work and sometimes it didn't. I finally just recently figured out my problem. I use Simplify 3d and the startup scripts are on a timer, bottom line is if I started a print and the nozzle was too high (Z too high) it would time out before it got to the ABL command. I now make sure the Z is no more than 24mm above bed at start and the ABL routine has never failed. For the last 2 months I can relax and know that ABL will "just work"! I'm not sure what your servo problem is, the servo shouldn't get out of whack once you set the limits.

[Roxy]

The BeckDac firmware was the only stable version of Marlin for over a year. But now, RC-3 ( Release candidate #3) is at least as stable as the BeckDac branch. It might be wise to move to it when you have a chance.

[mattanonymous]

Thanks guys. I'll give the new firmware a shot soon and see if there's maybe a timeout happening before the ABL routine (it does seem plausible).

[Renfro]

I second the lower Z solution. Starting the print job with the Z above 40mm times out (skips) the ABL for me here too.

BTW no problems with the Tower Pro servo here (over 6 months of usage) on BeckDac.