Reading the laser set up,I believe the pwm is correct on the left, but can I use these 12v and ground pin outs?
My power supply is 24v now and my laser is only 12v off my lr2
I would assume that 12v pin is going to be 24v if that’s the power being supplied unless you test and confirm it with a meter first.
If you re going to supply your laser through the skr you also need to be sure the power supply can handle the additional current requirements.
You don’t say what power requirements your laser has, if it is a low power (say 2 watts output power) then you might be OK using those pins to supply it with 12V but if it is higher power laser then I wouldn’t risk it.
That socket is fed from a linear 7812 12v regulator without a heatsink that is rated for a maximum of 1 Amp, if you are feeding it with 24 volts you are asking it to dissipate a maximum of 12 watts (W=IxV). The spec sheet shows a maximum allowable power dissipation without a heatsink as ~2.5Watts … it will get very very warm! IMHO much better to go for a switching regulator to drop your 24V to 12V.
A switching 2 Amp buck regulator cost pennies these days and if you do blow it up you don’t have to rework your controller board.
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Thanks for this.
The laser is a tad confusing as it says working voltage 12/24 v 3-4 amps but then its input says 12v.
My power supply is a 192watt 8 amp. Based on what I have read for the requirements, I think this will still be fine though I will do as suggested to provide 12v to the laser itself.