I'm building an airsoft prop bomb, and I've gotten so far with it that it's working, but I've got a little annoying feature in it that I don't like.
My seven segment display flashes, everytime piezo buzzer beeps or a button is pressed.
I don't know what's causing it, but I'm using Arduino Uno at the moment, and I've tried using it through different pins, and I'm going to change this to Arduino Mega2560 later, but I would like to get it working before that. It seems to be somehow related to piezo buzzer and buttons, as when the countdown on the display goes down without the buzzer, it doesn't flash, and even when it's stopped and I use beeper through button, or set it to beep on its own, it stll flashes.
Does anyone know how to get it so that it doesn't make the display flash?
Here's my prototype so far: http://www.youtube.com/watch?v=M8Ijk0JxXDI and you can see from that what I mean. Without buzzer it just changes the last number without flashing.