DroneBridge for ESP32 supports traditional WiFi. Run the access point directly on the drones ESP32 or connect to a central access point on the ground.
DroneBridge for ESP32 supports ESP-NOW as a protocol. While similar to WiFi it offers far more range at the cost of some data rate (still 250kbit brutto rate). In contrast to a WiFi setup you will need two ESP32`s running DroneBridge for ESP32. On one the ground and one on every drone.
A firmware for the popular ESP32 modules from Espressif Systems. Probably the cheapest way to communicate with your drone, UAV, UAS, ground-based vehicle.
It also allows for a fully transparent serial to WiFi pass-through link with variable packet size.
It is ideal for connecting many drones in one single network.
DroneBridge for ESP32 is a telemetry/low data rate-only solution. There is no support for cameras connected to the ESP32 since it does not support video encoding.