Portable Speaker

This project is a complete portable speaker system with an E-ink display. The speaker uses an audio amplifier circuit to adjust the gain and volume of the sound. The E-ink screen allows for persistent displays, which continue to be shown even when power is not supplied. Time and date as well as other features can be integrated into the project to be displayed on the E-ink screen.

Breadboard

Breadboard

Schematic

Schematic

Source: Circuit Basics

Parts List

Parts List

Audio Jack Schematic

Signal I/O