Most of guys asked about 230V flashing diagram so I suppose this would be the most easiest schema diagram.Here we have used common multivibrator schema and two 3V relays.You can connect your AC line via the relay.( Use relay as a switch) Even the persons who use 110V can use this schema.Not only that If you like to attach this schema for you car you can attach 12 v to the relay (as a switch).This schema can be operated with 3V power supply.
# Dont supply over 4V
# Find best relays
#Build this schema on a PCB
