I'm having an issue with my code locking up during an attempt to play an MP3 file with the Sparkfun MP3 Player Shield ( SparkFun MP3 Player Shield - DEV-12660 - SparkFun Electronics ) on an Arduino Mega2560. I have a box full of 30 LEDs and 18 buttons that I have to also control at the same time. Oka…

Deadlock when playing MP3s and blinking lights

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