Arduino-AY-player

Arduino Pro Micro project: chiptune music player on AY-3-8910 chip with OLED display (SSD1306 128x32) and control buttons for playing PSG files (see below) from SD card.

Based on (and great thanks to the author): https://www.youtube.com/watch?v=m23hZ-1JwqI

Added:

• SRAM memory (23LC1024) allowing to read file names from SD card and randomize them without repeats
• 8 buttons: switching between full/demo song playback, random/sequencial playback, previous/next song, +/-5 songs, +/-10 songs
• shift registers: two 74HC595 for controlling AY-3-8910 via 3 pins and 74HC165 for connecting 8 buttons via 3 pins on Arduino
• switch between audio line output and TDA7050 analog amplifier with volume potentiometer for connecting headphones

Updates:

• faster refreshing of ABC channel volume indicators (almost no flicker)
• pressing both buttons 7 and 8 switches between views of volume indicators (> [] < or bars/note freq)
• saving selection of playback modes and volume indicator view type to EEPROM

Arduino sketch: AY_Player_OLED_SRAM.ino

Demo video: https://youtu.be/qcmWFfHZnjQ

Video with new modes of indicator: https://youtu.be/EuEVkPjT0Eg

PSG files can be converted from other chuptune music formats with AY_Emul: https://bulba.untergrund.net/emulator_e.htm

Needed libraries

SSD1306Ascii: https://github.com/greiman/SSD1306Ascii

Frequency generator: https://github.com/Rick-G1/FrequencyGenerator

SRAM_23LC: https://github.com/mattairtech/SRAM_23LC

Curcuit

See 'Arduino-AY-player-circuit.png' and 'Arduino-AY-player-circuit.pdf'

Update: try to remove 0.1uF capacitor connected to pin 12 of 74HC595 registers if AY-3-8910 doesn't play music.