Tutorial: Building a Radio Intercom with Android and Raspberry Pi Pico​1. Hardware Requirements​1x Raspberry Pi Pico1x DRA818V Module1x VHF/UHF Antenna with SMA Connector1x SMA Male-to-Male Cable1x 4-8Ω Speaker1x MicrophoneJumper Wires5V Power Supply2. Wiring DRA818V to Pico​Pico W DRA818V------ -------3.3V/5V ----> VCC (Pin 1)GND ----> GND (Pin 2)GP4 (TX) ----> RXD (Pin 3)GP5 (RX) ----> TXD (Pin 4)...Read more