Individual tower diagonal length adjustments

th0mpy · September 13, 2020, 1:28am

I am looking through the documentation, but unable to find what I am looking for. I am coming from Repetier.

The issue is that I get some scaling issues in the Z and Y axis. I’ve adjusted the diagonal rod length to an average but under repetier I was able to set individual rod length adjustments via DELTA_DIAGONAL_CORRECTION_ABC. Does Smoothieware have an ability to do this as well?

My system description

I have a Azteeg X5
I am running Smoothieware version: edge-bdb141f
I connect to my Smoothieboard via USB Mac
My Smoothieboard controls a: Delta printer

Arthur_Wolf · September 13, 2020, 12:54pm

Any of these look like what you need ?

github.com

Smoothieware/Smoothieware/blob/edge/src/modules/robot/arm_solutions/RotaryDeltaSolution.cpp#L33


#define delta_halt_on_error_checksum    CHECKSUM("delta_halt_on_error")

const static float pi     = 3.14159265358979323846;    // PI
const static float two_pi = 2 * pi;
const static float sin120 = 0.86602540378443864676372317075294; //sqrt3/2.0
const static float cos120 = -0.5;
const static float tan60  = 1.7320508075688772935274463415059; //sqrt3;
const static float sin30  = 0.5;
const static float tan30  = 0.57735026918962576450914878050196; //1/sqrt3

RotaryDeltaSolution::RotaryDeltaSolution(Config *config)
{
    // End effector length
    delta_e = config->value(delta_e_checksum)->by_default(131.636F)->as_number();

    // Base length
    delta_f = config->value(delta_f_checksum)->by_default(190.526F)->as_number();

    // Carbon rod length
    delta_re = config->value(delta_re_checksum)->by_default(270.000F)->as_number();

th0mpy · September 13, 2020, 1:22pm

I don’t think so. But I might not be reading the code properly. That said, if I am able to adjust the individual diagonal rod length, I can’t do it via g-code. Is that correct?

I think maybe what I was hoping for was a g-code, or parameter to adjust. Similar to:
M665 L297.5000 R139.3101
with some parameters X Y Z (for example) which could allow me to adjust the individual lengths.

Arthur_Wolf · September 13, 2020, 2:35pm

Aren’t you looking for the advanced settings at the bottom of http://smoothieware.org/delta ?