Laser module don't ray (Atomstack A10 pro v2)

[Ipppolit]

Dear colleagues!

After a few cuts my brand new laser (Atomstack A10 pro V2 Black) suddenly did not ray (burning / firing), at the same time It is moving properly, fan works, two leds at laser module works (pwm is blue, power is orange).
Such bad behavior exists both: under WIFI via Atom Stack Mobile app and USB control via LightBurn.
I checked similar topics, and my current settings is:
$30=1000.000
$31=0.000
$32=1
Moreover, I follow this instruction and measure Power and PWM at module:

Power = 12.13 V
PWM while sending S command at console in LightBurn:
S255, PWM= 1.11 V
S0, PWM = 0 V

Could you please help me to solve this problem?

[MikeyH (Mike Hembrey)]

@Ipppolit

S255, PWM= 1.11 V

What is your setting for S-value max in the Device Settings window? What is your $30 GRBL parameter?

Without this information, we do not know if the PWM voltage is good or bad.

[Ipppolit]

Thanks for your prompt reply!
As I mentoined, my current settings is:

$30=1000.000
$31=0.000
$32=1

S-value max in the Device Settings = 1 000
$30 GRBL parameter = 1000.000

Here is pics:

[MikeyH (Mike Hembrey)]

From an electronics point of view and rounding the numbers: 255/1000=25%.
25% of 4.5v (5v source) is 1.125 volts. It appears the PWM matches the S value pretty well. So…

Go back and check your settings. Many including myself found it is easy to change a setting we did not intend to change.

1. Make sure you are using mm/min in the Settings window (Units & Grids tab in v1.7.x).
2. Check the power % setting. 100% can cause overheating in some machines.
3. Check the speed setting.
4. Make sure the focus is set right (this one gets me a lot)
5. Confirm all the cables are securely in their sockets.
6. No change in material while testing.

Let us know the results of your review. The only other thing not in my list is the laser head going bad, but we need to eliminate everything else first.

[Ipppolit]

Firstly, unfortunately, I was unable to get my previous PWM measurements repeated.
Right now PWM is around 0 despite all S commands (0 to 1000)…

1. Units is mm/min
2. I didn`t properly cath what means power or speed settings.
   So here is Cut and Machine settings:
   
   
   
   
   
   
   
   
   
3. Autofocus is off
4. I ran all the wires,Its ok
5. ok

[MikeyH (Mike Hembrey)]

@Ipppolit

Right now PWM is around 0 despite all S commands (0 to 1000)

This is not good. Do you get the laser to light up using the Fire button in the Move window? If not, try reseating the laser module connector.

@Ipppolit

didn`t properly cath what means power or speed settings.

I was referring to the Cuts/Layers window. But if you are getting PWM always zero, this is not important for now.

[Ipppolit]

Unfortunately, this model AtomStack A10 Pro V2 Black doesn’t have a Fire button.

I used g-code commands like m3 to turn laser on and m5 to turn it off. Only fan at the module responded to this commands, laser doesn’t ray.

I double checked the connection and ran it via multimeter, it’s ok.

[MikeyH (Mike Hembrey)]

@Ipppolit

doesn’t have a Fire button.

Make sure you are not in the Beginner Mode.

@Ipppolit

m3 to turn laser on and m5 to turn it off.

Did you include an S-value with it? Try this in the Console Window before the M3. Also try M4 as well.

S250 is 25% power, so if it works, it will burn something.
G01 X50 Y50 F100 S250

[Ipppolit]

Hi, MikeyH!
At first I enabled a Fire button in settings, despite this its didn’t get any effects, only fan turn on.
I conducted some tests, thank for your explanation about g-code commands, I guess it was a point last time:

G-code	PWM,V	PWR,V	Fan in laser module - on	Laser - fire
S1 M3	0.01	12.02	yes	no
S10 M3	0.03	12.01	yes	no
S25 M3	0.1	12.03	yes	no
S50 M3	0.2	12.02	yes	no
S100 M3	0,42	12.05	yes	no
S100 M4	0,42	12.05	yes	no
S250 M3	1.08	12.03	yes	no
S500 M3	2,17	11.96	yes	no
S900 M3	3.89	12.03	yes	no
S1000 M3	4.33	12.01	yes	no

Measurements looks good.

This is a Hero of this sad story:
Atomstack Laser Module Model No: M50 v2
10W, 455 nm, frequency =1KHz
input 12V, 5A

You mentioned, that:

@MikeyH

25% of 4.5v (5v source) is 1.125 volts. It appears the PWM matches the S value pretty well. So…

I have an crazy idea, may be this module need more than 5v as PWM?
Is it save to increase S-value over 1000?

[MikeyH (Mike Hembrey)]

@Ipppolit

Is it save to increase S-value over 1000?

That will not increase the PWM voltage. From the numbers you posted, if the laser is not lighting up, that suggests the module is bad or the connector is not secured.

Got warranty?

[Ipppolit]

Thanks a lot for your time and advises!
I asked the new module from AtomStack team within warranty, waiting for an answer.