Hi this year I have decided to try and make my own display. Just wondering if this would all work or if I should change anything so here it is. The main component will be a 8 channel controller using:Arduino mega ( http://www.ebay.com.au/itm/262690277898 ) with a 8 channel solid state relay ( http://www.ebay.com.au/itm/351374614740 ) assambeled in a waterproof electrical box ( http://www.ebay.com.au/itm/322762981272 ) wired into the relay there are 8 female ends of extension cords (https://www.bunnings.com.au/arlec-2m-10amp-household-extension-lead_p4330418) to plug pre existing lights into. I plan to use the code detailed on this site (http://kbarre123.github.io/blog/2015/01/02/arduino-plus-vixen-3-equals-merry-christmas/) I also plan to have 4 pixel arches using a arduino uno ( http://www.ebay.ca/itm/162588230815 ) housed in a waterproof box's(http://www.ebay.com/itm/191936074142) connected to 4 2.5 metre ws2812b strips (https://m.aliexpress.com/item/32829638704.html) in a arch (not sure what to use to form the arches) . Powered using the included power supply's. The uno's will run the code from the following site (http://doityourselfchristmas.com/forums/showthread.php?37245-mutliple-pixels-strings-on-arduino). This will all be controlled from a pi1b+ running fpp running a sequence programmed in vixen 3. EDIT: changed rgb strip Thanks for reading and any advice you may offer.