Power Hardware
Speaker finally working
Jun 14, 2026 · 1 min read · Phase 2 — Head Electronics
After two evenings of debugging I discovered the amplifier wasn't faulty — the I2S configuration was off. Audio is finally working.
What happened
After two evenings of debugging I discovered the amplifier wasn’t faulty — the I2S configuration was off. R2 finally has a voice.
Lessons learned
Don't assume the hardware is dead
Two evenings were lost chasing a bad amplifier before checking the I2S clock configuration. Software first, then hardware.