/YM2149_ESP32

ESP32 based REST server to control 8bit soundchips

Primary LanguageC

Yamaha YM2149 ESP32 Soundmodule

ATTENTION

DON'T FLASH THE ESP32 WHILE CONNECTED TO POWERSUPPLY ! THIS COULD DESTROY THE ESP32 ! JUST USE AN USB CABLE !

Abstract

This soundmodule enables YM2149 soundgeneration via a web interface in a dedicated WiFi Network or your existing WLAN.

The YM2149 is Yamaha's pin- and register compatible version of General Instrument's AY-3-8910 which was used in legendary video game consoles and home computers like

  • Intellivision
  • Vectrex
  • Amstrad CPC
  • MSX
  • later ZX Spectrum

The soundchip is controlled by an Espressif ESP32 which also works as

  • Webserver providing HTML/JavaScript documents to control the soundchip via browser
  • Application Server providing a REST interface
  • clock generator for YM2149
  • (WiFi Access Point)

HW Revision 1.0

Schematic

V1 Schematic

Features

  • HW-104 (PAM8403) Amplifier Board
  • Breadboard Powersupply(3V3 and 5V) Board
  • ESP32-WROOM Devkit Board
  • ALPS RV16 A10K logarithmic potentiometer used
  • 6.3mm Audiojack

Bugs

[ ] Mounting holes at random positions