Dilshan Jayakody published a new build:
The main objective of this project is to design a maintenance free and low-cost light which automatically turns on and off at the predetermined time of the day.
To meet the above requirement I designed this controller using ATmega8 MCU and DS1307 RTC. The driver stage of this light controller is intended to work with commonly available 7W LED modules.
More details on his blog.
from Dangerous Prototypes https://ift.tt/2Udscn6