Hey Guys & Girls Just finished the build of my FLSUN Kossel Delta printer.

3D Printing
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Hey Guys & Girls

Just finished the build of my FLSUN Kossel Delta printer. I have a version with a heated bed with a separate power supply.

The control board is a generic Mega2560 based board (BT2700 V1.8.26 Ramps Plus2) and it can be seen in the picture below. I’ve flashed it with a pre-configured version of Marlin which came on the SD card that was delivered with the printer.

I’m also running Repetier Host software on my PC and I’ve managed to do my Z axis calibration which is now correct.

My question is, when I hit the home button, only the X motor and the Y motor responds and goes back to find the home position. The Z motor is unresponsive.

However, I’m able to manually manipulate the Z motor by means of the Repetier manual control.

So I’m thinking since I am able to do the manual manipulation of the motor that it is probably a firmware issue instead of a board/motor problem?

Looking forward to your inputs.

Thanks
Dirk

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sounds like the firmware is configured for cartesian style homing. So yes, this is an issue with the firmware not being configured properly. IIRC this is not a feature you can change via eeprom, so you will have to configure, compile and flash your own variant of the Repetier.

3

Yup, definitely a firmware issue. Just double checked my wiring and it is all correct according to the labelling on the board and to the manual.

I played around some more with Repetier using the manual mode and discovered the following:

When I use the Y command (up or down), the Z motor responds.

When I use the X command (up or down), the Y motor responds.

When I use the Z command, all three motors respond.But only after the X motor hit the X home switch.

So I will take a look at the Marlin firmware, reconfigure and flash it again. Thanks for the heads up.

4

Repetier itself is fine, running that on my delta too. Both will be challenging when adapting Marlin or Repetier to the pinout of your board.

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There’s an example Configuration.h file for generic delta printers in the example_configurations directory in the Marlin github repository. It would be a good place to start from.

6

Thanks for the input. It was a stepper motor driver module that was faulty. I misunderstood the printer but managed to figure it out now. I tested the config file that came with the printer and did a dry run of a print and it seems to be working correctly.

Thanks again for the input. Now to patiently wait until I receive a replacement A4988 stepper motor module.

Regards
Dirk

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Do you do custom design for hire?

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No, it’s a kit that I purchased off Ebay. The picture is from the documentation that came with the kit. Kit details: FLSUN Kossel mini delta

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. Ml