Build a LED Driver with Pulse Modulation

Hi,

I do not have much of experince but is there information on how to build a simple LED Driver with Pulse Modulation using arduino (contoling the on/off time (pulse) using python/matlab/etc)?

Thanks.

Hi ashz and welcome.

You program an Arduino using the Wiring language, which is based on C/C++. You can't use other languages like matlab or python.

Have a look at the "Fade" example in the "Learning" section of the Arduino website. This uses pwm to drive an led.

Paul

Read about what pulse width modulation is here:-
http://www.thebox.myzen.co.uk/Tutorial/PWM.html
Note this is not pulse modulation but pulse WIDTH modulation.

Thanks for the help.

I saw that the blink example is also good. What is the different between this code and a LED driver?

As a beginner, can someone please provide me the scheme of how to connect a led strip (single color), do I need additional components?.
Furthermore, is it possible to connect 3 different strips (single color) to the same Arduino board and control them with 3 different on/off cycles setting? do I need additional components?

Thanks a lot

What sort of LED strip is it and how long. The arduino can only switch voltages of 5V at currents less than 49mA. If you have a 12V LED strip then you need a transistor or FET and resistor to controll them. Yes you can have many I dependant on off cycles going at the same time.