4 layers31.8 × 37.3 mm

Boards in 3 GitHub repositories, designed in KiCad, that use the BT3 by Altech (- Switch Accessories / Caps ROHS). See how each wires it, with its parts, size, README and files; the BT3’s symbol, footprint and pinout are on its own page.


Zektopic/esp32-blue-audio-puck
Turn wired headphones wireless: an ESP32 Bluetooth audio receiver (A2DP sink) with I2S DAC output, parametric EQ, AVRCP remote control and battery-aware power management. Built on ESP-IDF v5.5.
