I need help with PWM driving a laser module

[DBSDBS]

Hello all,

I'm trying to use a PWM signal from arduino to drive a laser module with only 3 pins: +12V, GND, TTL/PWM

I read this topic , but still not sure P or N channel mosfet should I use.

Can someone advise me?

Thank you in advance.

Best Regard

Denis

[TomGeorge]

Hi, @DBSDBS
What controller are you using?

Can you post a link to the laser module data/specs.

Thanks.. Tom...

[DBSDBS]

Hello @TomGeorge ,

The laser is from THIS LINK

I can use Arduino Uno, but my question is basically how to do it.

I got one small N-channel MOSFET module but I'm not sure is it suitable or not.

[TomGeorge]

Hi, @DBSDBS
Your laser;

Your MOSFET.

They do not say if the MOSFET is logic level control or not, which will be essential for control logic from a microcontroller.
What model Arduino?

Thanks.. Tom..

[wvmarle]

The answer is in the specs in the image of #4.

PWM input: 3.3-12V

Your Arduino outputs 3.3V or 5V depending on the model, so that signal should be able to control your laser directly. Just remember to connect the grounds as well.

Do remember to be very careful with your laser. Never look into laser with remaining eye!

[DBSDBS]

Ardoino Uno.