Delta config

[guelz]

Hi all

I`m trying to figure out the right configuration for my Delta Printer.

I have only Max- "Hall Endstops" installed running on 5V  and really hope that the LPC Pins are 5V tolerant!

So far everything seems to work. Homing direction is right and the Endstops work as well.

But, as soon as there in Home position, G0 and G1 commands (G0 Z5 for example) are not working any more. Meaning I don't get any movement at all!

Neverless, if I start a Gcode file from SD or serial it starts by moving upwards and tries to print above the max-Endstops!

I dont quite get whats happening here!  Idea anybody?!

I havent tried every possible endstop configuration, my Reset-Finger is getting a bit tired!

# Endstops

endstops_enable                                 true             # the endstop module is enabled by default and can be disabled here

alpha_min_endstop                             1.24             #

alpha_max_endstop                            1.25!            #

alpha_homing_direction                       home_to_max      # Home up

alpha_max                                          620              #

beta_min_endstop                               1.26             #     ! = invert pin

beta_max_endstop                              1.27!            #     o = set pin to open drain

beta_homing_direction                         home_to_max      #     ^ = set pin to pull up

beta_max                                           620              #     v = set pin to pull down

gamma_min_endstop                          1.28             #     - = to set no pullup

gamma_max_endstop                         1.29!            #     @ = to set repeater mode

gamma_homing_direction                    home_to_max      #

gamma_max                                       620              #

Any help appreciated.

And please excuse my english.

[Arthur Wolf]

2013/5/22 guelz <p.g...@gmail.com>

Hi all

Hi !

I`m trying to figure out the right configuration for my Delta Printer.

I have only Max- "Hall Endstops" installed running on 5V  and really hope that the LPC Pins are 5V tolerant!

They are !
 

So far everything seems to work. Homing direction is right and the Endstops work as well.

But, as soon as there in Home position, G0 and G1 commands (G0 Z5 for example) are not working any more. Meaning I don't get any movement at all!

Neverless, if I start a Gcode file from SD or serial it starts by moving upwards and tries to print above the max-Endstops!

I dont quite get whats happening here!  Idea anybody?!

I don't have any delta experience, but I think this is a problem with the homing configuration ( direction, or max etc ).

You could come on IRC and talk to the folks that have it working.

Cheers.
 

I havent tried every possible endstop configuration, my Reset-Finger is getting a bit tired!

# Endstops

endstops_enable                                 true             # the endstop module is enabled by default and can be disabled here

alpha_min_endstop                             1.24             #

alpha_max_endstop                            1.25!            #

alpha_homing_direction                       home_to_max      # Home up

alpha_max                                          620              #

beta_min_endstop                               1.26             #     ! = invert pin

beta_max_endstop                              1.27!            #     o = set pin to open drain

beta_homing_direction                         home_to_max      #     ^ = set pin to pull up

beta_max                                           620              #     v = set pin to pull down

gamma_min_endstop                          1.28             #     - = to set no pullup

gamma_max_endstop                         1.29!            #     @ = to set repeater mode

gamma_homing_direction                    home_to_max      #

gamma_max                                       620              #

Any help appreciated.

And please excuse my english.

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[Jim Morris]

Can you post your entire config?
Are your endstops high when triggered or low?

When you home does it go up them stop when it hits, then back off enough to release the endstops, then back up slowly to trigger them again?

[guelz]

Yes, homing was working fine.

Anyway, got it now! My bad! I always get a bit confused by this naming mixup of Axis and "Towers/Motors"!

It should look like this on a Delta: 

# Endstops

endstops_enable                                 true             # the endstop module is enabled by default and can be disabled here

alpha_min_endstop                             1.24             #

alpha_max_endstop                            1.25!-            #

alpha_homing_direction                       home_to_max      # Home up

alpha_max                                          0              #

beta_min_endstop                               1.26             #      ! = invert pin

beta_max_endstop                              1.27!-            #      o = set pin to open drain

beta_homing_direction                         home_to_max      #      ^ = set pin to pull up

beta_max                                           0              #      v = set pin to pull down

gamma_min_endstop                          1.28             #      - = to set no pullup

gamma_max_endstop                         1.29!-            #      @ = to set repeater mode

gamma_homing_direction                    home_to_max      #

gamma_max                                       620              #

Its the same in every firmware config. Or is it just me whose confused by this!-)

[Jim Morris]

Oh yea I missed that sorry... alpha_max, beta_max and gamma_max are the coordinates effectively set with the equivalent of a G92 after it is homed. That is rather confusing I agree. It is the same in marlin, just named differently. The example rostock config has them set correctly.