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Using a 12V lipo to power LED strip and Attiny 85

Former Member

Hi, I'm trying to reproduce this tutorial, https://learn.adafruit.com/rgb-led-strips/usage, but power it off an 12V 5Ah battery and use an Attiny 85 instead of an arduino uno.

I have it all working, but I'm running the Attiny 85 microcontroller off a separate 4.5V battery pack, which isn't ideal.

 

The range of voltage for the Attiny 85 required is 2.7-5.5V... 12V would fry the thing. How can I lower the voltage to get it down to this required range, and still have the LEDs using the full 12V?

Would a simple resistor connecting the +12V to the VCC of the ATTINY work?

 

 

Or would I need something like this 5V regulator: 5v Regulator

 

 

Thanks,

 

Matthew

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