DOOM Played On Series Of 555 Timers

A hobbyist named Nick built a circuit using only 555 timers to recreate the opening music track from the original 1993 DOOM game. The design uses one 555 as a clock feeding a binary counter and decoder, a diode matrix to encode pitch information across 15 time positions for six distinct notes, and a second 555 timer with switchable resistor networks to actually generate the audio tones. The project is framed as an academic exercise in digital logic rather than a practical way to play chiptunes, since any microcontroller could do the job far more easily.

Source: https://hackaday.com/2026/08/28/doom-played-on-series-of-555-timers. 8 Sync News only summarizes and links out; content copyright belongs to the authors and original sources.