This is modification for my daughters non digital Revell ambulance toy. I simply wanted to add buzzer with two diodes and a trigger button to make it flash and sound like a real ambulance!
Operation is very easy. You just press the button and make your ambulance sound and flash for a while.
It is build on MSP430 microcontroller for extra ordinary battery lifetime. It will basically last forever. To launch the project you need to install Code Composer from TI.
