AI-Thinker Ai-WB2-12F Wi-Fi & BLE 5.0 Module w/ BL602 SoC

The module supports secondary development using the official BL602 SDK, which provides a Linux-based development environment. You can program it in C using the provided HAL libraries. It also supports a universal AT command set over UART for quick integration without deep firmware development, allowing basic Wi-Fi and BLE configuration from a host microcontroller.

Configuration is primarily done via AT commands sent over the UART interface at a default baud rate of 115200. Commands are available to connect to Wi-Fi networks (WPA2/WPA3), set up SoftAP, manage BLE advertising and connections, and control operation modes like Station+BLE. Detailed AT command manuals are provided in the BL602 SDK documentation from AI-Thinker.

The module requires a 3.3V supply (2.7V to 3.6V range) and can draw peak currents over 500mA during RF transmission. To minimize power, you must utilize the sleep modes via firmware. Putting the chip into deep sleep reduces current to 12µA, but you must manage GPIO states and peripheral power. Proper power sequencing and pin configuration before sleep are critical for achieving the lowest quiescent current.

The standard Ai-WB2-12F variant comes with a fixed onboard PCB antenna and does not have an external antenna connector like an IPEX or SMA. For designs requiring an external antenna, you would need to select a different variant of the module (if available) or consider a different chipset. The integrated antenna provides adequate range for most indoor and short-range IoT applications.