axi - audio input switch with arduino

an audio input switch box project with arduino uno, cd4052b multiplexer and pcd8544 lcd display.

parts used

• arduino uno
• pcd8544 / nokia 5110 lcd
• cd4052b 4x1 multiplexer
• npn transistor (x2)
• 1k res (x2)
• button (x4)
• 3.5 mm input jack (x5)

todo

• add bt v5.0 audio gateway