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PWM laser connections
« on: April 12, 2021, 07:43:13 AM »
I have had a diode laser running on my CNC for a while now but can only operate it at 100% so I now want to get the PWM working.
I use a Warp9 ESS connected to a 5 axis BOB via port 1 and have pin 17 connected to the PWM connection on the laser for M10/M11 control. Works well.
I built Tweakie's little NAND trigger unit and connected it all up as below and followed the spindle/laser setup in the Warp9 install manual.
I have tried playing with various M10Pxx/M11Pxx and S********* commands but pin 1 will always stay low (0 volts).
I am either missing or not understanding something here and hoping someone can help please.

Thanks
Re: PWM laser connections
« Reply #1 on: April 12, 2021, 07:45:19 AM »
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Offline Tweakie.CNC

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Re: PWM laser connections
« Reply #2 on: April 13, 2021, 01:13:45 AM »
Hi Fyshious,

With the Warp9 ESS & Mach3 the PWM signal can be gated with the M11/M10 switching signal within software onboard the ESS – my little NAND gate circuit is not required.

If you follow Warp9’s Laser setup instructions here, you should be good to go.
https://www.warp9td.com/index.php/gettingstarted/setting-up-the-smoothstepper-and-mach#Laser

Tweakie.
KEEP SAFE !
Re: PWM laser connections
« Reply #3 on: April 13, 2021, 06:14:52 AM »
Hi Tweakie. Thanks for that.
Followed the Warp9 Laser install to the letter but didn't work.
Found that , for some reason, my system only recognises Port 2 for the M10/M11 commands even though the BOB is plugged into port 1 on the ESS.
Changed M11P1 to M11P2 and away it went.
Thanks again for your valuable time and assistance
Doug

Offline TPS

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Re: PWM laser connections
« Reply #4 on: April 13, 2021, 06:21:34 AM »
 M11P1 does not mean port1 it means Output 1
anything is possible, just try to do it.
if you find some mistakes, in my bad bavarian english,they are yours.
Re: PWM laser connections
« Reply #5 on: April 13, 2021, 06:34:01 AM »
OK. That shows my lack of knowledge  :-[
But I'm learning
I will play with the outputs again

Offline TPS

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Re: PWM laser connections
« Reply #6 on: April 13, 2021, 06:41:06 AM »
in your case M11P2 it means Output 2 witch you have configured in ports&pins to port 1 pin 17.
anything is possible, just try to do it.
if you find some mistakes, in my bad bavarian english,they are yours.
Re: PWM laser connections
« Reply #7 on: April 13, 2021, 08:30:11 AM »
Thanks