Laserlands 650nm & 532nm Module

[AC5FF]

I'm just getting myself into some laser projects and needed something a little more powerful than the run of the mil laser pointers I have been using.

After going back and forth I ended up purchasing this setup from LaserLands.Net off Ebay. The only issue I have is that there was zero information that came with the setup.

I've sent them a few messages via email/website/ebay but I have yet to hear back from them. I am hoping someone here has some information on the setup I purchased and can point me to or send me some documentation or datasheet for it.

I don't want to just apply 12v to one of the connectors only to damage/destroy it because I was missing something.

TIA!

 

[diachi]

You should introduce yourself in the "Welcome" section. :beer:

As for your laser. Hint: Look at the silk screen on the PCB. That'll get you close/started. If it came with cables for the +12V input all you need to do is plug it in the right place, which is labeled on the PCB.

 

[AC5FF]

Thanks diachi - I'll try and get over to that section. Will likely come up with a few good questions throughout this project; may as well make the introduction!

As for the module I have - I see the 12V-in plug; but what I wanted to learn more on is how the TTL worked. if I plug in 12v will the lasers come on? Do I need to hook up a signal to the TTL for it to work? if so, what does that signal need to be?

Also, it's pretty obvious what plugs supply power to the laser; but the green laser has an additional 4wire connector to the board. There isn't anything on the board describing what this plug is doing - so I was hoping to learn that as well.

Thanks though for the quick response....

 

[diachi]

Thanks diachi - I'll try and get over to that section. Will likely come up with a few good questions throughout this project; may as well make the introduction!

As for the module I have - I see the 12V-in plug; but what I wanted to learn more on is how the TTL worked. if I plug in 12v will the lasers come on? Do I need to hook up a signal to the TTL for it to work? if so, what does that signal need to be?

Also, it's pretty obvious what plugs supply power to the laser; but the green laser has an additional 4wire connector to the board. There isn't anything on the board describing what this plug is doing - so I was hoping to learn that as well.

Thanks though for the quick response....

Depending on the driver you'll either need a TTL+ signal or you won't... Some use inverse TTL (meaning no signal = on), some allow you to select that. Usually you need to apply a signal though.

The TTL input requires a +5VDC signal. You can just apply 5VDC from an LM7805 to it if you don't plan on modulating the laser at all, or you can hook it up to something that'll provide modulation of some sort, e.g. a PWM signal from an Arduino would work for controlling brightness. You could also use it as a simple on/off switch or interlock.


What are you planning on using this unit for?


My guess would be that the 4 pin connector for the green head is for a TEC and temperature sensor. Two of the others wires are for the laser diode and the remaining two are for the fan.

 

[AC5FF]

Well
After your last post the bug bit me and I plugged it in.
Both green and red lasers fired up with nothing connected to the TTL connectors. When I get home tonight I'll try hooking that plug up to my arduino and seeing if i can easily modulate the beam.

Planned use is going to be a laser harp. Something I found a LONG time ago online and loved the idea of. Ran across it again recently and figured I'd give it a go.
Also, wanted to create a fan display over my driveway for Halloween. That one I planned on limiting the arc to the width of my driveway and aiming the beam at the neighbors roof. I also hoped to be able to use the red beam to shine at the street light in front of our house to in effect 'turn it off' for the evening.