https://hackaday.com/2015/04/18/mike-illuminates-us-on-led-filaments/
[Mike] Illuminates Us On LED Filaments | Hackaday
Apr 19, 2015 - LED filaments started showing up in light bulbs a few months back. [Mike] discovered that the strips are available in bulk from ebay and Alibaba. Always keen...
led filamentsmikeilluminatesushackaday