@Darren_Steele What exactly did you conect?
So I’ve currently got 2.4 connected up to PWM but still nothing was working because L wasn’t connected to anything. As soon as I grounded L [ by quite literally connecting to GND ] then the laser was off and running. So now I just need to work out how to selectively connect GND to L
Im not sure what do you mean by 2.4 connected to pwm. Anyway PIN 2,4 is pwm and in your board should have a + and - connector. The - is gnd. Connect L there
Oh, cool, that simple huh? I’ll give it a go on Friday when I’m back home. Thx
Yep, that’s how to “connect L to MOSFET output”.
Ariel, just adding to the question pool here…
So is what you’re saying is that the IN pin of the LPSU should be connected to the + lug of the 2,4 ( FAN ) connector and the L wire should be tied to the 2,4 - terminal? if this is the case is the - terminal pulled high when the laser isn’t firing? Wouldn’t the LPSU then technically always be in a firing state?
@Jon_Bruno no. Just take the L from the PSU right most in the picture above and connect it to the PWM (2.4pin) on the - terminal. Only 1 cable is used. Please note that this is how I run it on my azsmz smoothie compatible board and been using it like this for almost 2 month daily.
So with this method the power of the laser is controlled with the potentiometer?
@Darren_Steele max power will be controlled by the Pot. So if you dial it to 10 mA and the fire the laser at 50% you will get roughly 5mA
Hi Guys i am currently working on a smoothie install and i have the same PSU as in the picture above what i fiund is the right side connector with the L is the firing wire I have a DAC on the PWM line that stands for digital to analog convertor i found i can control the power to the laser with a digital signal voltage and keep the laser off when not needed i am currently sorting out an on off control via a pin from the smoothie to a SSR (solid state relay) the first one i tried was wrong as it went from DC to AC I now have on order a DC-DC relay already tested the system works just like it did with the nano board in control safely
O @Dennis_Fuente why do you think you need to do all that? Also explain as this could make others in the thread confused
There we go.
That’s why I brought it up.
I just wanted to see if there was a good way to clarify both approaches and what the differences are in a layman’s sort of way. Not everyone is intimate with the way things work. Some just jump all in with the recommendations of the more savvy but then end up in over their heads. (not me…) just saying…lol
@Jon_Bruno I agree and it’s imperative that this topic gets clarified
Well, I was able to deduce that the pin at the defined 2.4 (assigned to fan duty) is most likely an N channel MOSFET and the + side of the connector it shares is probably tied to a rail.
My issues may reside in the nomenclature, 2.4 is a single pin But the image I have defines the entire connector as such. So is the - side on the MOSFET or the + side? (N vs P channel) But that’s for another thread…but this definitely needs to be dumbed down for the people following the pioneers.
Hi Guys sorry not trying to confuse anyone and i cannot speak to all the different types of PSU’s in these machines i can only speak to the PSU in my machine and it is the same as the one in the picture and to my finding’s using an O scope.
I have been describing my installation but no one has inquired as to my findings i just read this post this morning
@Dennis_Fuente please post a new thread on this community regarding your findings. I will appreciate if you could use plain English without acronyms.
Sorry forgive me i think in the world i am in and not the fact the everyone dose not understands what i am wrinting my appolgies to all.
I have tested my finiding’s and be leave them to be correct in firing the laser safely and correctly as soon as i install the last componet and the installation is finished i will due my best to post what i have done on the forum hope to have this done by next week or sooner
Very interested in a write up on your setup and your cutting/engraving results @Dennis_Fuente like @Ariel_Yahni_UniKpty said a post of its own would be awesome
So last night the DC-DC relay came i and i installed it worked like a charm i don’t have everything locked in place it’s all kinda hanging so i would like to help others if i can let me know what and how pass along the info i have gained
@Dennis_Fuente new thread with pictures of that you did and a diagram of. The connection. Nothing need story be Profesional grade