here is a picture from inside the box !
i have used a clear blue LEDs for the litters, and red LEDs for the heart!
each LED was connected with 330R resistor in series to limit the current
i have used and modified the attached circuit to suite my needs
you can watch the video in bellow link! https://www.youtube.com/watch?v=Ur3Y4KO2DMc&list=UUi0So8t1g7GcczZO2EtOjsQ
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