Part Number: Servo Driver with ESP32 ESP32 Servo Driver expansion board, Built-in WiFi and Bluetooth Dedicated driver board designed for serial bus servos Allows controlling up to 253 servos via the ESP32 serial port, with open source bottom layer and web application, as well as open source hexapod walker and humanoid robot structures, ideal to be used as the main controller while building robotics projects. Compact size and space saving, suitable for integration into sorts of space-limited projects