How to DIM LED with Arduino & Triac

Zero-Cross & Triac Optically Isolated Switch “Tail”: https://www.powerswitchtail.com/pssr-zc-tail
arduino: https://amzn.to/2P12JaL
RealTimeClock (RTC): https://amzn.to/2NTKsjg
15W Dimmable LED https://amzn.to/2OqlHL0
CR2032 battery for RTC: https://amzn.to/2Ov8elf
sourcecode: https://github.com/curiousinventor/AC-triac-arduino-led-dimmer