I am looking to build a motion sensing device that will dim a LED Strip to full brightness when motion is sensed, and dim to off after a timeout has occurred from last motion sense. All the tutorials I have seen just show how to dim via RGB inputs, but I will need to dim via PWM to the 12V input of the LED strip.
I will be using the SparkFun Pro Micro 5V board (https://www.sparkfun.com/products/11098
), Armacost LED strips (http://armacostlighting.com/documents/RibbonFlex60-RF3528060.pdf
), and the SEN-08630 PIR (https://www.sparkfun.com/products/8630
Has anyone attempted this or have any advice on how to PWM the voltage input on a 12V device?