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Smoothieboard question

Posted: Tue Sep 20, 2016 12:17 pm
by Johncoffee
I'm currently testing a smoothieboard instead of the Rambo board on my Rostock MAX V2. I have a issue at the home all sequence at the endstops.

On the Rambo board, after homing all towers, the carriage does a bounce back from 5mm with slow speed to the end stops. After touching the end stops again, there will be a final bounce back from the endstops - also for about 5mm. Exactly this is what the smoothieboard doesn't do, at least I don't know what parameter to change to achieve this.

Can anybody help me?

Thanks a lot - John

Re: Smoothieboard question

Posted: Tue Sep 20, 2016 12:25 pm
by KAS
Try this

Code: Select all

alpha_homing_retract_mm         5                # retract/bounce distance after homing in mm
beta_homing_retract_mm          5                #
gamma_homing_retract_mm         5                #

Re: Smoothieboard question

Posted: Tue Sep 20, 2016 2:19 pm
by Johncoffee
Thanks KAS.

I already have these values - and they seem to do the first bouncing to slowly approach the end stops. But they don't seem to have any effect after homing. My carriage remains at the end stops. Not sure why...

Any other idea?

Re: Smoothieboard question

Posted: Tue Sep 20, 2016 2:35 pm
by KAS
post your config, if you dont mind. Also what version of the firmware are you using?

Re: Smoothieboard question

Posted: Tue Sep 20, 2016 2:39 pm
by Johncoffee
Thanks KAS.
Here my config. I'm just setting it up and test it step by step.
How can I check my FW version?

Re: Smoothieboard question

Posted: Tue Sep 20, 2016 2:44 pm
by KAS
Type version in your terminal window. Should look something like this:

READ: Build version: edge-7e9de0a, Build date: Aug 8 2016 10:14:50, MCU: LPC1769, System Clock: 120MHz

Re: Smoothieboard question

Posted: Tue Sep 20, 2016 2:51 pm
by KAS
Everything looks good in your config. I'm guessing it's the firmware or maybe delete the firmware and reload it.
I changed those values I posted above to 50 and it definitely adjusts the bounce and retract after homing. Something else must be going on.

Here is my config for the newest edge build

kas_config.txt
(24.09 KiB) Downloaded 41 times

Re: Smoothieboard question

Posted: Tue Sep 20, 2016 3:17 pm
by Johncoffee
Great - Thanks a lot. Will try!

Re: Smoothieboard question

Posted: Tue Sep 20, 2016 3:52 pm
by Johncoffee
I just realize that my board is not a original smoothieboard - it is a MKS sBase board. The "version" command doesn't exist here. Hmm..

Thanks for the config.txt file. You seem to use it on a Rostock Max - So I'll compare your settings once with my settings.

I'll try the 50mm as well once to see what happens - also I'll slow down the slow homing rate like your values.