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9V - 12V led strips combine with microcontroller ??

Azamir Zerkocv
Prodigy 50 points

Hi,

I am working on a hobby model replica of a building which I am looking at supplying led lighting to. I am using the msp430 launchpad development kit to control the lighting with a programme.

My problem is that I want to use a microcontroller to control the lights which leaves me restricted to 3.3V as an input voltage for any light source, I am using ultra bright 10mm led’s (23 in total) and unfortunately they are not bright enough. I originally wanted to use led strips but from scouring the internet it does not appear that there are any led strips that can be powered by 3.3V but only 5V upwards, but I feel 5V powered lights would not be bright enough.

Is there a safe way to use 9V or 12V led strips while still controlling the led’s with a microcontroller. I would be very grateful for any input, opinions or any recommendations.

Kind regards

  • 0
    Guru 46710 points

    >Is there a safe way to use 9V or 12V led strips while still controlling the led’s with a microcontroller.

    Indeed. Solution is - to use driver (switch that can be controller by 3.3v signal). Easiest one - 3.3v logic compatible n-MOS transistor. There are loads of info on internet, for example this one and that one have some circuit examples. Thou better you pick nmos type yourself, according to your specs

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