powering rgb light strips

We need some advice on powering 12v light strips.

  1. power to 12v 500ma side of vrm
  2. power to 12v 2a side of vrm
  3. power to pdp
  4. power to spike

I know this is somewhere but we cannot find it.

Do you want to be able to turn them on and off or leave them on?

If you just want to leave them on you can plug them in the VRM(which port depends on how much current they draw but keep in mind that the 500ma rating and the 2a rating are for the two ports combined not two separate 2a connections)

If you want to turn them on and off then you would use a spike

We’re using one of these to power our LEDs:

An easy way to have on/off control is to connect the strip to the PCM and treat the lights like a solenoid. (Just make sure PCM is set for 12v and not 24v)

If you want to get creative and have color changing ability, you can use the different solenoid ports as different grounds for each color pin. Then you have individual color control. We played with this in the off season and we able to to switch colors to indicate different modes or statuses.

When sizing the power supply for your LED strip it’s easy to underestimate the power required. A “normal” addressable RGB strip will draw 30mA per color for each pixel.

Therefore, a strip of 100 LEDs, showing “White” (I.e. Red, Green and Blue), will be 30mA * 3 * 100 = 9000 mA or 9A draw at full brightness. Your VRM is NOT going to handle it.

Fortunately there are many inexpensive 12v -> 5v 10A DC/DC buck converters available on Amazon. For example: https://smile.amazon.com/Converter-Regulator-Regulated-Supplies-Transformer/dp/B00J3MHTYG/ref=sr_1_1?ie=UTF8&qid=1487424220&sr=8-1&keywords=12v+5v+power+converter+10A