We’ve looked at the WROOM-DA module before. It’s an ESP32 with ... According to the block diagram, the twin antennas are not used simultaneously but offer diversity one at a time.

In the ESP32 module the built-in DAC and ADC are used ... The DIY Walkie-Talkie circuit diagram. (Credit: Clemens Valens, Elektor magazine) ESP-NOW is Espressif’s own network protocol that ...