Hi. I have a material I’ve created for christmas lights. It uses the random setting to pick from one of 4 colors. I have that part working now I would like to be able to have the lights blink on and off but not all at the same time.

I need a little help with ideas to accomplish this.

just as you use the ‘object::random’ as input for the colors, you can use some animated ‘input>>value’ node to drive the emission strength. (the modulo function of the math can be used as a repeater)

The material is to be used with particles (I think that’s what you’re using too).
I don’t know which kind of pattern you want to turn the lights on/off. Right now, the particles just blink in sequence, but the math can be changed to create different patterns.

The ‘Animate here’ node is just a Value node with keyframed values.

In my example, I haven’t use drivers, just created a keyframe (I key) in the value node, change frame and add a different keyframe to the node. About using the particle index, the modulo(4)>>lessthan(1) makes every particle with index 4,8,12,(…) to light up because their modulo(4) is 0, which is less than 1 (resulting in a 0,0,0,1,… pattern). Adding a number to the index will just shift the output. if the particles are on the vertices of a edgecurve, they will light as moving dot.