Component: I²S Speaker Amplifier - wiring, firmware, parts

[polygoku]

I²S Speaker Amplifier — MAKHEX component workbench

Current status: Research candidate. No verified seller, SKU, orderability or checkout.

Discuss exact board or module variants, pinouts, SDK compatibility, firmware changes, and reproducible bench measurements here.

What to contribute

• Manufacturer, source URL and exact variant/PCB revision
• Power supply and GPIO voltage limits, schematic, chip package
• Code examples with ESP-IDF/Arduino and library versions
• Supplier and BOM changes with dated orderability evidence
• Confirmed failures, measurements and proposed fixes

Known qualification caution: Do not drive a speaker directly from GPIO. Match impedance and supply to the specific amplifier.

Please separate hypotheses from tested findings. Never post credentials or personal information.