Single Channel Relay Help

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The code I worked on was working... what have you added?

Code help for Bomb Game

I am making a "bomb" for airsoft based on some designed I saw online for the hardware and code. However for the "explosion", right now it is just flashing lights and a buzzer. I wanted to add a strobe light and MP3 sounds to it. But I am not sure how to achieve that as when I connected the strobe light, it flashes along with the "ticking" as did the MP3. Ideally I want these to happen at the "explosion only". I am using the Uno Rev 3 board and web editor to code. #include <Wire.h> #include <…