There's nothing wrong with the Lytworx led strings that are sold at Bunnings (and maybe elsewhere) but they have a problem if you try to control them with a DC dimmer board. http://www.bunnings.com.au/lytworx-220-led-festive-budlight-white-_p4351527 in particular and maybe other Lytworx strings are made so that there are 2 channels of lights but in order to control the 2 channels the polarity of the leds is reversed. What this means is that for DC control only half of the lights will turn on. With modification they may be able to work all the leds off DC but realistically it's not worth the hassle. Short story is that if you are wanting to PC control led strings then stay away from these leds in particular and maybe the Lytworks brand in general.