Building an LED Startup Sequence

hello everyone.

I'm hoping with some direction regarding a project i'm about to embark on. I do work in IT but know very little about programming and have never had to program an Arduino before.

I was to build a 'start up sequence' for a project that when I power the device on (device also powers LEDs and Arduino) that it goes through powering on LEDs in a sequence.

eg, for simplicity sake lets say I have 3 rectangle cutouts and 3 LED's behind each cutout.

What i'd ideally like to do its slow pulse LED's 1-3 behind first rectangle cutout 3 times, then LED's turn solid 100% bright.

Then LED's 4-6 behind second cutout pulse 3 times then turn solid 100% bright.

Finally LEDs 7-9 behind the third cutout pulse 3 times then turn solid 100% bright.

I've been trying to do a search and have some reading to do on PWM controlling the LED's however I do have an Ambilight config and thought it would be good to use a WS2812 strip for this project. Any searches around programming these strips seem to be just changing the entire strip various colours which isn't what I am trying to achieve.

Any guidance or direction would be greatly appreciated, or any related projects you know if I can go and have a read of, generally I very good at taking something of someone else's and modifying it to my needs.

FYI: I have an Arduino Uno now but am happy to buy another, ideally I would like it to be as small as possible.

Many thanks,
Dayle.

Look at the 'Blink without delay' example in either the learning pages of this site or in the IDE. Read, understand and embrace the principle. Also see this topic.