I received an Eleksmaker laser that looks like it’s PWM controlled, as there’s only a barrel connector, is this still useable with the Rambo mini? From what I gather, TTL control is the most common one here. Before I return it to purchase a TTL version, is there any way to use this laser with the rambo, even if I have to purchase another board of some sort? It’s a 12V laser, and the power supply included is a 2.5A 12V laser, and it hasn’t been determined if the rambo mini pins can handle 2.5A, at least according to another thread.
I understand that the 2.5A should come from the included power supply, but as I mentioned, there is only a barrel connector, no other wires for control. I found a video where a similar laser was put on a CR10, and he did in fact use the 12V fan output, but waiting on an email back from ultimachine before I go ahead and try it.
On the laser itself it says Drive Mode: Internal ACC
Wavelength 445nm
Output Control: Powersource
Variable Focus: Yes.
I looked under the fan (there’s no drive attached to the top of the fan), and just found a circular circuit board soldered in, with just the barrel plug and fan connected to it. I asked the ebay seller and they said there’s no PWM either. if I can’t confirm that I can remove the pcb that’s there and replace it with a TTL driver, I’m probably better off returning it.
Interesting. Can you share a pic of the PCB, please? Even if you return it, it might help someone in the future.
So to control this, you’re thinking of pulsing the power to the whole unit on/off to get the strength you want. If there’s anything complicated in there, that might not work, and you’ve also got the problem/feature that the fan will be reduced speed with reduced power, so running at 10% might not even turn the fan. That’s an easy fix, but I wonder what the laser will do if the total power is cycled like that (it might be fine, I have no idea).
At first that’s what I was thinking, since I assumed it was a pen driver, but when I look at the driver board, it looks hotglued in place, so I may take it apart anyways. You’re right about the fan, which is why I wanted to replace with a driver board that has ttl so that I can wire it to make the fan turn on. Id Ie glad to post a picture in the morning, but from what I can see, if there are any components, it’s be on the opposite side of what’s exposed.
