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Topics - Koskee

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This message is intended for Zax, but I'm posting it for future reference in case others have the same issue. I did a quick once over of the threads in this category and found nothing similar, please excuse if it has been discussed before.

I was just using T2 last night, < 24 hrs ago, and it was fine, i had a temporary issue where the control laser dialogue refused to be visible, but that was solved with a reboot. Tonight, I tried to open T2 and I get the above error. I've tried rebooting, same result. So, as instructed, I am contacting said vendor.

Ahem. Here goes. Zax,
AHHHH!!11!!!1!1! WHAT DO I DO NOW?

I can't remember what the terms of the licence were, but I bought one and it has been working fine so far.. Is it only good for a year or something :o ?

General Discussion / Well, my jaw just hit the floor..
« on: March 31, 2017, 04:14:43 AM »
I was just nosing around on mouser, and I came across these diodes for the fantastic price of $31..
They are pulsed NIR diodes @ 905nm (pretty sure thats the wavelength commonly found in police LiDAR systems actually) with peak outputs of 75W. (absolute max of 90W in the datasheet)
They'll suck back a whopping 40A of current. These sound amazing lol. I'm just wondering what the he** I'm playing with 3.5W for when I could be cutting some serious sh**! And just think if you threw a crystal in front of it to double it up to 452nm, that would be a seriously bright blue laser. (or maybe it would vaporize the crystal... who knows, could go either way  :P )

Would obviously need any and all safety precautions associated with co2 tubes however, like fully enclosed key-interlock, and viewable only by CCTV, for example, but I'm having a hard time believing the price of these.

Looking for a bit of help. I used to build custom handheld lasers years ago, so I have a decent idea when it comes to diodes, drivers, heatsinking, etc. I also know basic TTL/PWM concepts, which I picked up relating to microcontrollers, but beyond basic arduino outputs there are some gaps (esp. in relation to LDs since anything I've done before has always been a constant wave application)

I know I saw this laser mentioned on here somewhere before, but I didn't see anything about my specific issue discussed in any detail to be useful.
 I bought a 3.5W laser module on sale from banggood, 450nm ( and it comes with a separate board, which I'm guessing is a TTL board, although I am not certain.

Side story: The laser got lost in the mail for about 5 months, they refunded it because they didn't have any in stock, and I bought another diode from DTR (i'll save that discussion until my heatsink shows up). But then, litterally 5 months later, this laser finally shows up. Its packaged in a static safe bag, wrapped in thin white foam, and thrown in a plastic mailing BAG. (Like wtf? Guess theres a shortage of cardboard in china?) Needless to say, after getting passed around the mail system for 5 months, one of the potentiometers was bent almost off the board and the heatsink was bent on one corner. Not sure how much of that was there in the first place (I mean look at the wonky soldering job in the pictures posted on THEIR^site)

Anyway, I am trying to interface it with the (new?) Mana SE board (no jumper under nano, or anywhere actually, and has an inductor under the nano instead) I'll attach a picture. Neither of the 2 items came with a cable that would go between them, so I've had to make one out of my parts bin ( I had 3 pin connectors for the laser, but not 2 pin for the others)

The problem is that the TTL board has 4 pins, but the laser connector only has 3. I can get the TTL board to turn on, and the fan on the module runs, but the laser just doesn't want to pew pew. It seems the TTL signal might need a ground, but I've tried attaching that pin to ground and it doesn't work. I have gone through countless ways of connecting it but can't seem to get any of them to do anything.

I saw in another thread they mention if you have a 2 pin laser, that the mana has built in TTL (which mine does) and could be connected to the motor connector. I am hesitant to try this though, as I've taken the fan off the back of the laser module and the wires go right into the back of the diode housing. I don't SEE any sort of current regulator, but I guess there could be a small one in there. I'm not certain that the diode is going to be able to handle a full +12v if there's no curcuitry in there, I've never heard of a diode running directly on 12v.. If there is, I'm not sure enough about the polarity of the wires to connect it with any confidence (I have Gray and Dark purple/blue from the diode, which could be interpreted either way) Is it ok to plug my diode directly into the mana SE (with no visible current regulation?)

As others discussed in another thread, I tried hooking a fan to some of the pins, and it seems I am getting PWM output on all three of the servo, laser and motor connectors. the signal on the laser connector is <5v paired with 12v supply, the motor puts out +12v PWM, and the servo has 5v (or actually 4.78v) pwm on the S line, and 4.78v supply. So that all seems to be working as expected from what I can tell, other than it being shy of 5v.

I'm trying to get it running with the trial T2 software and 1.1e firmware. I doubt it really matters, but the rest of the system is an Eleksmaker A3.

Anybody have any ideas? I mean for all I know, it might have been damaged in shipping, or maybe I fried it, but I would like to know whats wrong either way.

Thanks in advance, hope i didn't forget anything relevant.


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