405nm 445nm 450nm Laser Diode LD Driver Board 12V 2W Step-Down Constant Current Drive Circuit of TTL Modulation Power Supply

Worked well for my laser so far

Works as described. I had to get this driver board because the one that came with my laser ( not from this seller) was faulty.

Mine seems to be a POS. Using withy 3d printer to run a 1.5w laser and it doesn't change the output at all using my printers controllable fan. I supplied an external 12v, connected the ttl to my controllable fan and connected the laser to the laser output on the board and the only way I can get the laser to do anything besides full on is to turn the little pot screw on the board lower than 4.6v. If anyone can write a review telling me what I'm doing wrong that would be great otherwise it's just a voltage reducer and I can't get those much smaller..

It definitely works but it's inverted to how my controller (woodpecker 3.2 grbl 1.1) works by default. My controller puts out 5V when laser off and 0V when on (max spindle speed). This laser ttl controller turns the laser on at 5V and off at 0V. Haven't found the software fix yet which probably exists but simple enough to make work in hardware - soldered a jumper wire before the signal is inverted.

Although I haven't, tried it yet, looks OK.

I haven’t use this app since I hooked it up. It works extremely well but I do remember there was some type of polarity issue. A pin out from the manufacturer is always helpful with products like these. The data sheet would be helpful also!

So, first of all, my unit had a stuck trim pot. The blue multi-turn one. Turning the dial produced no noticeable result. I think that one must control voltage, because turning the rheostat that's located on the opposite board edge to the potentiometer increased current and boosted beam intensity by what appeared to be 10x. I could have kept turning the rheostat down but it reached a the impedance match and and achieved maximum power transfer... lowering the resistance further caused it to start dimming. Also, and I don't know what sorcery was used here, but using this driver with a 9V battery produced a greater beam intensity than hooking the 9V directly to the emitter.

Exactly as described, came exactly on time, several hours earlier than expected, actually. Quality is really decent for REALLY high-powered diodes. Ideal as a universal driver with the latest technologies for any powerful lasers or maintaining a stable current. WARNING ⚠️ ⚠️ You must have proper/verified eye protection before using this device with any diode. Never stare at the beam, or even look directly at the beam, or even point the beam towards you or someone else, even if the diode is off. Make sure the switch is always off and no there is no power connected, once soon as you stop operating. Irreversible consequences may happen if mishandled.

Product was not working properly when recieved however the seller was quick to offer a replacement or a refund. Customer service was very good.