design

Diagram

Connect all parts together to build up the project.

Connect all parts together to build up the project.

Connect the keypad to PIN GPIO 2-5 and GPIO 17-20.

Connect the AUDIO PIN of amplifier to GPIO 1, connect its GROUND to any G PIN on board, and connect its POWER PIN to 3V3 PIN on board.

Connect the Micro USB power supply of the board to any USB port.

Gallery