2 layers90 × 90 mm

Tpg transceptor
sjperson/audio-transceiver
Arduino-based audio transceiver with microphone input, 6-bit ADC/DAC, and analog reconstruction
57 partsMIT
Boards in 1 GitHub repository, designed in KiCad, that use the CMA-6542PF by CUI (-42dB@±3dB 2.2kΩ 4.5V~10V 500uA 6.7mm 60dB 9.7mm Omnidirectional - Microphones ROHS). See how each wires it, with its parts, size, README and files; the CMA-6542PF’s symbol, footprint and pinout are on its own page.

sjperson/audio-transceiver
Arduino-based audio transceiver with microphone input, 6-bit ADC/DAC, and analog reconstruction