[majstoralc]

Hello
I need help with wiring arduino uno with 15W laser.
I have this laser:
https://www.ebay.com/itm/450nm-15W-Laser-Module-W-Heatsink-Fan-Support-TTL-PWM-for-DIY-Laser-Engraver-J/222755022085?epid=0&hash=item33dd3be505:g:gJgAAOSw0HFbbrsG
Please help me.
Best regards

[majstoralc]

Hello
I need help with wiring arduino uno with 15W laser.
I have this laser module:

[ZASto]

What kind of problem?
The only empty connector that you have on your module is the one labeled "PWM/TTL". That is your input for PWM signal from arduino (guess that you use GRBL).

[majstoralc]

What kind of problem?
The only empty connector that you have on your module is the one labeled "PWM/TTL". That is your input for PWM signal from arduino (guess that you use GRBL).

First, thank you for answer.
I use GRBL and laser grbl program.
I have connected red wire+ and black wire-(12V)
I have yellow wire empty (pwm/ttl) . Wich pin from arduino going to this wire?
Wich wires going from arduino to my another empty connector -pwm/ttl+ (As shown in the attached image)
Can you help me?
Best regards

[ZASto]

PWM pin on arduino is D11.

[majstoralc]

Thanks.
Now i have proglem on GRBL with missing $30 and $31 files

This is copy from my GRBL :
**** Connected to COM3 @ 115200 baud ****
Grbl 0.9j ['$' for help]
>>> $$
$0 = 10 (step pulse, usec)
$1 = 25 (step idle delay, msec)
$2 = 0 (step port invert mask:00000000)
$3 = 0 (dir port invert mask:00000000)
$4 = 0 (step enable invert, bool)
$5 = 0 (limit pins invert, bool)
$6 = 0 (probe pin invert, bool)
$10 = 3 (status report mask:00000011)
$11 = 0.010 (junction deviation, mm)
$12 = 0.002 (arc tolerance, mm)
$13 = 0 (report inches, bool)
$20 = 0 (soft limits, bool)
$21 = 0 (hard limits, bool)
$22 = 0 (homing cycle, bool)
$23 = 0 (homing dir invert mask:00000000)
$24 = 25.000 (homing feed, mm/min)
$25 = 500.000 (homing seek, mm/min)
$26 = 250 (homing debounce, msec)
$27 = 1.000 (homing pull-off, mm)
$100 = 250.000 (x, step/mm)
$101 = 250.000 (y, step/mm)
$102 = 250.000 (z, step/mm)
$110 = 500.000 (x max rate, mm/min)
$111 = 500.000 (y max rate, mm/min)
$112 = 500.000 (z max rate, mm/min)
$120 = 10.000 (x accel, mm/sec^2)
$121 = 10.000 (y accel, mm/sec^2)
$122 = 10.000 (z accel, mm/sec^2)
$130 = 200.000 (x max travel, mm)
$131 = 200.000 (y max travel, mm)
$132 = 200.000 (z max travel, mm)
ok

[ZASto]

You should reflash your arduino with GRBL 1.1 ( https://github.com/gnea/grbl/releases )
Version 0.9 does not have laser mode. (#31)

[majstoralc]

You should reflash your arduino with GRBL 1.1 ( https://github.com/gnea/grbl/releases )
Version 0.9 does not have laser mode. (#31)

Its working. Thanks.

[majstoralc]

Its working. Thanks.

Is it necessary to suply arduino with 12V?
Now its working whithout input 12v to arduino.

[ZASto]

No it is not.
TTL/PWM is logic level (Transistor Transistor Logic) https://www.allaboutcircuits.com/tex...oltage-levels/

[quickjam]

Did you connect anything to the 2 pin connector (-/+TTL/PWM) which didn't include the plug with purchase? So Sxx could control intensity.
I know that the yellow(TTL) shorted to ground (-) will shut the laser down. So on/off would work that way. Or did you connect PWM to the yellow wire only? So it would pulse high/low from there with full intenisty burst.