LED Laser connections

[bentleya (Kent Bentley)]

Machine: 5 Watt Laser Open Frame - Modified larger frame

Board: Old board was an ‘Acan’ grbl, new is the Cohestion3d

Firmware: _Smoothie - Have not powered the unit yet.

Problem/ Question: Wondering if I have the correct LED connections. I’m thinking the +24, 2nd pin down GND, and the 4th pin for the yellow/fire? My old setup had a 12V power supply, the new Cohesion is 24V…another observation.

[bentleya (Kent Bentley)]

Project update…
Got the x and y axis working and scaled properly (config file). Liking the LB software!
Now for the laser, the laser is 12v, so it appears I need to power it separately, and tie the gnd to the board, and yellow wire to the L (fire) terminal??
Any thoughts?
Thanks!!

[Cohesion3D]

As a starting point, I can point you to these 2 resources:

Diode laser module wiring

home built cnc laser Laserboard GRBL-LPC I’ve got my machine running using a gutted k40 psu and tube however I want to be able to swap out the laser head for a diode module to make it more portable if needed. I have an oxlasers 5.5w module with a 3 pin connector and was unsure of the proper wiring to operate it. Any help on this matter would be appreciated.

Cheap diode laser upgrade

So I’ve purchased my first laser machine. A cheap diode laser off of ebay. (link below and pics attached) My issue is with the knock off nano arduino running grbl .8. I’ve struggled for days to get it updated with no headway made. This pushed me into the decision to purchase a proper controller, the cohesion board. I do have a lot of questions before I do this. My current board, has ports for my stepper motors, the laser itself, power etc… will the cohesion board have the same ports? W…

[bentleya (Kent Bentley)]

Thanks Ray!
I’ll try that this evening.

[bentleya (Kent Bentley)]

I’m only getting a very dim light from the laser.
I have the layer set to 100%.

Thoughts?

[bentleya (Kent Bentley)]

I’ve also noticed the LED fire light isn’t coming on……
It does running G1 X10 s1.0 f300

[bentleya (Kent Bentley)]

Got it working!
Now to start learning software…

[Cohesion3D]

Great!

For the benefit of others, can you share what the issue was and how you solved it?

[bentleya (Kent Bentley)]

I have it wired as shown in the picture above. When I ran g1 x10 s1.0 f300 I wasn’t getting the laser to fire (no led on board indicating a fire…clue). Once I ran it using 0.5, it started firing. So I had to use 0.1 to 0.9 for the S.
Also noticed my computer keeps defaulting to GRBL instead of Smoothieware, so I have to remember that each time I fire it up!
I’ve successfully pulled in dxf files from autocad (to scale) and now an a happy camper!!
Thanks Ray!