For fun. My parents wanted a fake security system with a blinking light at their house to ward off burglars, so I soldered an LED and a resistor to an ATTiny an

For fun. My parents wanted a fake security system with a blinking light at their house to ward off burglars, so I soldered an LED and a resistor to an ATTiny and then soldered on a double AA pack. It's still going off the first set of batteries.