Keyboard Piano

Overview

This project uses piezo-pickup buttons which detect touch and velocity to output piano sounds 

Description 

Our PCB uses an ESP32 to detect the touch and speed once a player uses one of the buttons. The buttons send a reading to our ESP32, which will determine what signal to send to our IS2 amplifier, which will relay a signal to our speaker. We also have an onboard battery charging functionality you don't need to be plugged in all the time. 

Features

• ESP32 N2 SOLO for microcontroller compatibility 

• Speaker connected to a IS2 amplifier for audio output 

• Slide switches for determining the output sound of the system 

• USB-C power delivery 

• Keyboard LEDs to show which buttons are being pressed 

• Solder bridges to switch for USB-C charging or battery charging 

Completed schmatic with USB-C charging, ESP32, IS2 amplifier, and Battery charging

Completed Layout (Back)

Completed Layout (Front)

3D View

Progress:

PCBs first arrive

Soldered most Capacitors and Resistors
(Had to use some through-hole capacitors due to wrong values)

Soldered on LEDS, Speakers, and Thermistors 

Finished PCB!