laser on too early

Jerome

Hi,

When using inkscape with repetier plugin I made a g-code file of some text.
Manually I have to set the Z-height so the laser is focussed.

When I start the g-code the laser instantly switches on even before starting engraving the text.
So from the 0,0 coordinates to the start of the text laser already on.
My text is offset from center due to delta printer.
Is the a bug or is there a way to fix this problem?

thanks

Repetier

Make sure the travel moves use G0 not G1. G1 will enable it on the way while G0 keeps laser off until target is reached.

Jerome

Repetier said:

Make sure the travel moves use G0 not G1. G1 will enable it on the way while G0 keeps laser off until target is reached.

How do I do that?

In de repetier plugin for inkscape there is no setting for that.

This is the beginning of the code created bij repetier plugin:

M452

M3 S255

G90

G21

G0 F5000

G0 X46.6438 Y-14.1442

G1 F1000.000000

G1 X41.6608 Y-26.4583

G1 X39.5773 Y-26.4583

G1 X34.6273 Y-14.1442

G1 X36.8763 Y-14.1442

G1 X40.6907 Y-23.9448

G1 X44.472 Y-14.1442

G1 X46.6438 Y-14.1442

G0 F5000

G0 X32.224 Y-26.4583

G1 F1000.000000

G1 X30.1515 Y-26.4583

G1 X30.1515 Y-19.4469

G3 X30.125 Y-18.5998 I-13.5801 J-0.

G3 X30.0523 Y-17.8594 I-10.4435 J-0.6527

G3 X29.8921 Y-17.1318 I-4.3441 J-0.575

G3 X29.6885 Y-16.6908 I-1.7785 J-0.5537

G3 X29.3552 Y-16.2938 I-1.3851 J-0.8245

G3 X28.8947 Y-16.0073 I-1.1513 J-1.337


etc etc etc

Repetier

And you see the code contains G0 and G1 moves as required, so that is ok.

So at which point does laser turn on? You can send it line by line to check that. Maybe firmware is not configured correctly.

Jerome

Hi,

laser switches on (pin 57 HIGH) with this line: G0 X46.6438 Y-14.1442

In configuration.h

#define SUPPORT_LASER 1

#define LASER_PIN 57

#define LASER_ON_HIGH 1

If I move the head manually using G0 X10 Y10  laser is on also when moving using repetier host manual control

is this correct?

thanks

Repetier

In Commands.com you should have

case 0: // G0 -> G1

case 1: // G1

#if defined(SUPPORT_LASER) && SUPPORT_LASER

{

// disable laser for G0 moves

bool laserOn = LaserDriver::laserOn;

if (Printer::mode == PRINTER_MODE_LASER) {

if (com->G == 0 || (!LaserDriver::laserOn && !com->hasE())) {

LaserDriver::laserOn = false;

LaserDriver::firstMove = true; // set G1 flag for Laser

} else {

#if LASER_WARMUP_TIME > 0

uint8_t power = (com->hasX() || com->hasY()) &&

(LaserDriver::laserOn || com->hasE())

? LaserDriver::intensity

: 0;

if (power > 0 && LaserDriver::firstMove) {

PrintLine::waitForXFreeLines(1, true);

PrintLine::LaserWarmUp(LASER_WARMUP_TIME);

LaserDriver::firstMove = false;

}

#endif

}

}

You see if (com->G == 0 sets laserOn false, so should be off at that move. And so far it always worked so wondering what you did that it does not work here. Does laser turn off for G1 instead? Then you might have LASER_ON_HIGH wrong also it would be safer that it only turns on with high signal. Also check no other function uses pin 57 to interfere.

Jerome

Hi,

Still not working correctly.

I checked, no other assigned to pin 57 except #define ANALYZER_CH7 57 // ysig in Repetier.h
The code in Commands.ccp is same so no issue there.

I tried the following.

Two letters, A and B about 5 cm apart from each other in inkscape
made a gcode file using repetier plugin.

The first move: G0 X30.0391 Y-17.3763 laser already on. 
The other G0 move in the code laser is off. So very strange.

Complete code below.

M452

M3 S255

G90

G21

G0 F5000

G0 X30.0391 Y-17.3763

G1 F1000.000000

G2 X29.8967 Y-18.7197 I-6.4116 J0.

G2 X29.5182 Y-19.8071 I-4.5545 J0.976

G2 X28.8966 Y-20.779 I-4.7076 J2.3261

G2 X28.1167 Y-21.5434 I-3.6613 J2.9552

G2 X27.0162 Y-22.2458 I-4.125 J5.2499

G2 X25.8223 Y-22.7093 I-2.9101 J5.7274

G2 X24.5677 Y-22.9521 I-2.1079 J7.528

G2 X22.6597 Y-23.0565 I-1.908 J17.3764

G1 X16.1112 Y-23.0565

G1 X16.1112 Y-4.5894

G1 X21.5807 Y-4.5894

G2 X23.5986 Y-4.639 I0. J-41.0803

G2 X24.6068 Y-4.7383 I-0.5083 J-10.336

G2 X25.5858 Y-4.967 I-0.8941 J-6.0353

G2 X26.5292 Y-5.3584 I-1.9335 J-5.9939

G2 X27.4373 Y-6.0023 I-1.9373 J-3.6944

G2 X28.0051 Y-6.735 I-1.9731 J-2.1153

G2 X28.3355 Y-7.5991 I-2.9155 J-1.61

G2 X28.464 Y-8.7318 I-4.9288 J-1.1327

G2 X28.2807 Y-9.9873 I-4.3917 J0.

G2 X27.7942 Y-10.9766 I-3.1768 J0.9478

G2 X27.0325 Y-11.7857 I-3.603 J2.6292

G2 X26.0083 Y-12.4525 I-3.4374 J4.1596

G1 X26.0083 Y-12.5517

G2 X27.73 Y-13.192 I-1.2076 J-5.8821

G2 X28.9601 Y-14.2012 I-2.198 J-3.9332

G2 X29.7397 Y-15.565 I-3.1229 J-2.69

G2 X30.0391 Y-17.3762 I-5.3295 J-1.8112

G1 X30.0391 Y-17.3763

G0 F5000

G0 X27.4842 Y-17.4755

G1 F1000.000000

G3 X27.382 Y-16.3838 I-5.884 J-0.

G3 X27.1493 Y-15.7019 I-2.4963 J-0.4713

G3 X26.7207 Y-15.1375 I-1.7795 J-0.9065

G3 X25.9339 Y-14.5857 I-2.4837 J-2.7044

G3 X25.318 Y-14.3443 I-1.4359 J-2.757

G3 X24.4828 Y-14.1888 I-1.3528 J-4.9461

G3 X23.6377 Y-14.1189 I-1.4372 J-12.2182

G3 X22.424 Y-14.0896 I-1.2137 J-25.1894

G1 X18.5669 Y-14.0896

G1 X18.5669 Y-20.9605

G1 X21.8163 Y-20.9605

G3 X23.4248 Y-20.9115 I0. J26.4036

G3 X24.458 Y-20.7993 I-0.6709 J10.9922

G3 X25.4512 Y-20.5354 I-0.9241 J5.4789

G3 X26.1447 Y-20.1792 I-1.1038 J3.0023

G3 X26.7695 Y-19.6342 I-2.1779 J3.1273

G3 X27.1617 Y-19.0754 I-1.9005 J1.751

G3 X27.3888 Y-18.4319 I-2.1643 J1.1254

G3 X27.4842 Y-17.4755 I-4.7455 J0.9565

G1 X27.4842 Y-17.4755

G0 F5000

G0 X25.9091 Y-9.0543

G1 F1000.000000

G3 X25.8449 Y-8.3993 I-3.3752 J0.

G3 X25.6858 Y-7.9257 I-1.9089 J-0.3776

G3 X25.4034 Y-7.522 I-1.4092 J-0.6855

G3 X24.9665 Y-7.1815 I-1.4244 J-1.3769

G3 X24.3593 Y-6.9237 I-1.3744 J-2.3925

G3 X23.5526 Y-6.7722 I-1.1877 J-4.1029

G3 X22.7203 Y-6.7113 I-1.3999 J-13.4015

G3 X21.4939 Y-6.6854 I-1.2265 J-29.0907

G1 X18.5669 Y-6.6854

G1 X18.5669 Y-12.0184

G1 X21.7419 Y-12.0184

G3 X22.8925 Y-11.9835 I0. J18.9557

G3 X23.5774 Y-11.9068 I-0.4125 J6.7836

G3 X24.2349 Y-11.72 I-0.6316 J3.4741

G3 X24.8425 Y-11.4107 I-1.2825 J3.2703

G3 X25.3464 Y-10.973 I-1.2257 J1.9202

G3 X25.661 Y-10.4558 I-1.423 J1.2197

G3 X25.8395 Y-9.8465 I-2.6736 J1.114

G3 X25.9091 Y-9.0543 I-4.4762 J0.7922

G1 X25.9091 Y-9.0543

G0 F5000

G0 X-31.3401 Y-23.0565

G1 F1000.000000

G1 X-33.957 Y-23.0565

G1 X-35.7678 Y-17.9095

G1 X-43.7549 Y-17.9095

G1 X-45.5656 Y-23.0565

G1 X-48.0585 Y-23.0565

G1 X-41.3364 Y-4.5894

G1 X-38.0622 Y-4.5894

G1 X-31.3401 Y-23.0565

G0 F5000

G0 X-36.5243 Y-15.8011

G1 F1000.000000

G1 X-39.7613 Y-6.735

G1 X-43.0107 Y-15.8011

G1 X-36.5243 Y-15.8011

G0 F5000

G91

G0 Z-0.20000000298023224

G90

G0 X30.0391 Y-17.3763

G1 F1000.000000

G2 X29.8967 Y-18.7197 I-6.4116 J0.

G2 X29.5182 Y-19.8071 I-4.5545 J0.976

G2 X28.8966 Y-20.779 I-4.7076 J2.3261

G2 X28.1167 Y-21.5434 I-3.6613 J2.9552

G2 X27.0162 Y-22.2458 I-4.125 J5.2499

G2 X25.8223 Y-22.7093 I-2.9101 J5.7274

G2 X24.5677 Y-22.9521 I-2.1079 J7.528

G2 X22.6597 Y-23.0565 I-1.908 J17.3764

G1 X16.1112 Y-23.0565

G1 X16.1112 Y-4.5894

G1 X21.5807 Y-4.5894

G2 X23.5986 Y-4.639 I0. J-41.0803

G2 X24.6068 Y-4.7383 I-0.5083 J-10.336

G2 X25.5858 Y-4.967 I-0.8941 J-6.0353

G2 X26.5292 Y-5.3584 I-1.9335 J-5.9939

G2 X27.4373 Y-6.0023 I-1.9373 J-3.6944

G2 X28.0051 Y-6.735 I-1.9731 J-2.1153

G2 X28.3355 Y-7.5991 I-2.9155 J-1.61

G2 X28.464 Y-8.7318 I-4.9288 J-1.1327

G2 X28.2807 Y-9.9873 I-4.3917 J0.

G2 X27.7942 Y-10.9766 I-3.1768 J0.9478

G2 X27.0325 Y-11.7857 I-3.603 J2.6292

G2 X26.0083 Y-12.4525 I-3.4374 J4.1596

G1 X26.0083 Y-12.5517

G2 X27.73 Y-13.192 I-1.2076 J-5.8821

G2 X28.9601 Y-14.2012 I-2.198 J-3.9332

G2 X29.7397 Y-15.565 I-3.1229 J-2.69

G2 X30.0391 Y-17.3762 I-5.3295 J-1.8112

G1 X30.0391 Y-17.3763

G0 F5000

G0 X27.4842 Y-17.4755

G1 F1000.000000

G3 X27.382 Y-16.3838 I-5.884 J-0.

G3 X27.1493 Y-15.7019 I-2.4963 J-0.4713

G3 X26.7207 Y-15.1375 I-1.7795 J-0.9065

G3 X25.9339 Y-14.5857 I-2.4837 J-2.7044

G3 X25.318 Y-14.3443 I-1.4359 J-2.757

G3 X24.4828 Y-14.1888 I-1.3528 J-4.9461

G3 X23.6377 Y-14.1189 I-1.4372 J-12.2182

G3 X22.424 Y-14.0896 I-1.2137 J-25.1894

G1 X18.5669 Y-14.0896

G1 X18.5669 Y-20.9605

G1 X21.8163 Y-20.9605

G3 X23.4248 Y-20.9115 I0. J26.4036

G3 X24.458 Y-20.7993 I-0.6709 J10.9922

G3 X25.4512 Y-20.5354 I-0.9241 J5.4789

G3 X26.1447 Y-20.1792 I-1.1038 J3.0023

G3 X26.7695 Y-19.6342 I-2.1779 J3.1273

G3 X27.1617 Y-19.0754 I-1.9005 J1.751

G3 X27.3888 Y-18.4319 I-2.1643 J1.1254

G3 X27.4842 Y-17.4755 I-4.7455 J0.9565

G1 X27.4842 Y-17.4755

G0 F5000

G0 X25.9091 Y-9.0543

G1 F1000.000000

G3 X25.8449 Y-8.3993 I-3.3752 J0.

G3 X25.6858 Y-7.9257 I-1.9089 J-0.3776

G3 X25.4034 Y-7.522 I-1.4092 J-0.6855

G3 X24.9665 Y-7.1815 I-1.4244 J-1.3769

G3 X24.3593 Y-6.9237 I-1.3744 J-2.3925

G3 X23.5526 Y-6.7722 I-1.1877 J-4.1029

G3 X22.7203 Y-6.7113 I-1.3999 J-13.4015

G3 X21.4939 Y-6.6854 I-1.2265 J-29.0907

G1 X18.5669 Y-6.6854

G1 X18.5669 Y-12.0184

G1 X21.7419 Y-12.0184

G3 X22.8925 Y-11.9835 I0. J18.9557

G3 X23.5774 Y-11.9068 I-0.4125 J6.7836

G3 X24.2349 Y-11.72 I-0.6316 J3.4741

G3 X24.8425 Y-11.4107 I-1.2825 J3.2703

G3 X25.3464 Y-10.973 I-1.2257 J1.9202

G3 X25.661 Y-10.4558 I-1.423 J1.2197

G3 X25.8395 Y-9.8465 I-2.6736 J1.114

G3 X25.9091 Y-9.0543 I-4.4762 J0.7922

G1 X25.9091 Y-9.0543

G0 F5000

G0 X-31.3401 Y-23.0565

G1 F1000.000000

G1 X-33.957 Y-23.0565

G1 X-35.7678 Y-17.9095

G1 X-43.7549 Y-17.9095

G1 X-45.5656 Y-23.0565

G1 X-48.0585 Y-23.0565

G1 X-41.3364 Y-4.5894

G1 X-38.0622 Y-4.5894

G1 X-31.3401 Y-23.0565

G0 F5000

G0 X-36.5243 Y-15.8011

G1 F1000.000000

G1 X-39.7613 Y-6.735

G1 X-43.0107 Y-15.8011

G1 X-36.5243 Y-15.8011

G0 F5000

G91

G0 Z0.20000000298023224

G90

M5 S0

G0 X0 Y0

M18

Repetier

So it works correctly except first move?

Jerome

That's right.

Today I tried a few things.
Replaced my Arduino mega -> no difference
Uploaded the latest firmware -> no difference

Still first G0 move laser on

I am out of ideas ..

Roko

Repetier said:
Does laser turn off for G1 instead? Then you might have LASER_ON_HIGH wrong also it would be safer that it only turns on with high signal. Also check no other function uses pin 57 to interfere.

Like he said, does it move manually and remain off, with a G1 code? From the looks of it you have a G!,G2 and G3 code used between the G0 codelines.

Jerome

Roko said:

Repetier said:
Does laser turn off for G1 instead? Then you might have LASER_ON_HIGH wrong also it would be safer that it only turns on with high signal. Also check no other function uses pin 57 to interfere.

Like he said, does it move manually and remain off, with a G1 code? From the looks of it you have a G!,G2 and G3 code used between the G0 codelines.

Beside this line: G0 X30.0391 Y-17.3763 its working as it should. laser is on when pin 47 is High.
btw how doe I check if pin 57 is used by something else?

If I use other software like 'laser engraver'  there is no issue at all.