Hi guys i have a Ruida RDC442G-B attached a laser diode from Neje12v 7w. i want to use this diode in my laser co2 machine whenever i am trying to engrave anything it burn the whole image any help on this what i am doing wrong here

Enno Groen

You have mounted it your diode allmost like I have, how did you connect it to your controller? And what laser(tube) settings do you use?

if you burn this logo with your co2 does it come out correct?

yes if i burn this with co2 it comes great just the diode behaving weird while engraving the diode comes with a adaptor the green color board where i have given a dc input and ttl and ground wire from the ruida controller cn6 port

Yes I see, which connections do you use from the ruida, pin 1 gnd and pin 3 ?

I set the Laser tube to RF with pre-ignition to make the diode work correctly

This works for me but I have seen that it does not work like desired for what ever reason. See this thread: Adding a diode to Ruida machine
There Someone got it working using pin 2 and 5 which I have not tried yet

Tried this also not working same problem…

tried what exactly and how are your laser machine settings?

i tried swaping the connections from the controller from GND to Analog 2 and LPWM2 to Lon still same issue

Enno Groen

Adilson Dias

Shane McAnally

Did you get your diode working with Co2 machine?

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