Open up the schematic for what is in the ESP32 MODULE. There’s more than the IC in there. Decoupling caps are always a good idea since you are dealing with a radio that will have peak transmissions.

There are already many cheap ESP32 drones on AliExpress, or you can even make an ESP32 DIY drone for about $12, but ...

In the ESP32 module the built-in DAC and ADC are used for audio in and output, which provide just about enough resolution for voice communication. ... The DIY Walkie-Talkie circuit diagram.

According to Joseph, the drone is small and can be made using readily available parts such as an ESP32 module, a gyroscope and acceleration sensor module ' ... The circuit diagram is as follows.

The latest module is even more powerful than the WROOM-32 and is equipped with a 8MB PSRAM chip when you need extra data buffering although the core processing chip (ESP32) and SPI Flash (4MB) is ...