BoardPilotSpeaker 8 Ω 0.5 W with ESP32
Supply 5 V
Bus GPIO
Pins and ESP32 wiring
| Pin | Role | ESP32 pin | Notes |
|---|---|---|---|
| + | Not wired to the ESP32 | — | Never to an ESP32 pin: use an amplifier (PAM8403, MAX98357A) |
| - | Not wired to the ESP32 | — | To the amplifier output, not to GND on bridged amplifiers |
Suggested wiring for the 30-pin ESP32 DevKit, avoiding flash, input-only and strapping pins. BoardPilot checks it for you as you wire.
This module is sold for 5 V. Its outputs may be 5 V: use a level shifter or a voltage divider on ESP32 inputs.
Sources
- Espressif ESP32 datasheet, GPIO drive strength is far too low for an 8 Ω load
Try it in 3D in BoardPilot
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Part data: CC BY 4.0, free to reuse with credit to BoardPilot.