This video and the accompanying web page ( http://www.trainelectronics.com/Anima… ) describe a circuit that gives a very nice thunder and lightning simulation. A recording of thunder is played on the DFPlayer and the Arduino samples that sound and flashes bright, white LEDs in time with the thunder claps.
Each Monday is ArduinoMonday here at Adafruit! Be sure to check out our posts, tutorials and new Arduino related products. Adafruit manufactures the Arduino right here in the United States in cooperation with arduino.cc. We have a huge selection of Arduino accessories and all the code and tutorials to get you up and running in no time!