Hello, I am am fairly new to arduino, and working on a project where i use a LED matrix (5x6), some buttons and a piezo. This is my schematic: Screenshot by Lightshot [image] As u can see, i put my piezo piece inside the LED matrix, due to the lack of more digital/analog pins. The way i have it…

Piezo

MarkT November 3, 2017, 1:15pm 4

Or you could have CharliePlexed the LEDS and used only 6 pins to drive them...

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