Turn on the lights for a short period of time only if outside is night
This code is written for Attiny85. The watchdog functionality is take from here: https://gist.github.com/dwhacks/8055287.
Description of application: When outside is dark, at every 30 minutes (aprox.) turn on the lights for about 2 minutes.
Used components: Attiny85; Relay module; Photoresistor; Battery pack.