Author Topic: 15W laser problems  (Read 502 times)

keenmatt

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15W laser problems
« on: July 12, 2018, 11:50:58 PM »
Help help help!
Ive just fitted a 15w laser to my cnc 3018 and I cant get the laser to switch to low power mode. It just wants to burn everything! How do I fix it? The board is a woodpecker GRBLO 9. Please if anyone can help me I would be eternally great full.


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Zax

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Re: 15W laser problems
« Reply #1 on: July 13, 2018, 06:56:42 AM »
I'm not familiar with the Woodpecker CNC board, does it support TTL?

Is the "15W" laser wired for TTL?

Does your software send the required codes for Grbl to change laser power?

keenmatt

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Re: 15W laser problems
« Reply #2 on: July 13, 2018, 07:16:13 AM »
On the woodpecker board it has a TTL out put and that is connected to the little board that the laser is connected to. I have downloaded Benbox but it still doesnít work.


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keenmatt

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Re: 15W laser problems
« Reply #3 on: July 13, 2018, 07:21:54 AM »





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Zax

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Re: 15W laser problems
« Reply #4 on: July 13, 2018, 08:26:39 AM »
I don't see a TTL output?

keenmatt

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Re: 15W laser problems
« Reply #5 on: July 13, 2018, 09:43:57 AM »


Oh so thatís more likely my problem then. It has a plug to connect laser so I assumed that was my ttl port.

Do you recommend a different board


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Zax

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Re: 15W laser problems
« Reply #6 on: July 13, 2018, 11:25:35 AM »
TTL is a 5V logic signal (usually direct from the ATmega328 chip), from the looks of that board it only has a 12V output (laser/spindle) but I don't know that for sure.

If you can figure out how to tap the TTL signal from the microcontroller you could use that board.

Your laser has 3 or 4 inputs / wires? It must have a separate power (12V and Ground), and then a TTL signal (sometimes another ground for the logic rather than power).

You wouldn't use the spindle/laser connector at all as that's a switched 12V.

I believe the Endurance lasers have a TTL input which works with 12V - so not really a TTL input at all but it would work with your board without modification (at least that's my understanding, I don't have one so you'd need to confirm).