Default is 10.

Yes, it's possible to use AT commands to read information such as SSID, MAC address, RSSI, etc., of the scanned nearby access points (APs). After retrieving this information, it can be uploaded to a server for further processing and localization calculations.

Yes, in PICO VR use cases, ESP8266's I2C interface is used, and similarly, ESP32-C3 can also use the I2C interface to achieve the same functionality.

SPIWP and SPIHD are used as a 4-bit parallel SPI bus to access external Flash or SRAM, typically for attaching external FLASH or SRAM modules.

GNSS stands for Global Navigation Satellite System, which includes satellite systems such as GPS, BeiDou, Galileo, and others. GPS, on the other hand, refers to the Global Positioning System developed through collaboration between the National Aeronautics and Space Administration (NASA) and the Department of Defense (DOD) of the United States.

Similar to configuring a router. In our module, embed a webpage where users can input information about available networks. Then, the module creates a hotspot. In this scenario, users connect their computer or phone to the module's hotspot. Next, they enter the module's IP address in a web browser, typically 192.168.4.1.

From there, they can input the information about the available network again to achieve Web networking.

Regardless of whether it is AP networking, Bluetooth networking, or Smartconfig networking; corresponding mini-programs or apps need to be developed. Considering cost and stability, it is recommended for users to use Web networking.