DFRobot Beetle Microcontroller, BLE and Beetle - DFRobot DFR0575, The Beetle-ESP32 Microcontroller is only 35 x 34mm (1.38 x 1.34in.) in size and is a simplified version of FireBeetle-ESP32, specially designed for electronic engineering fans and DIY lovers. It is equipped with 4 analogue ports, 4 digital ports, UART and I2C interfaces, making it a perfect replacement for many physically larger boards.The microcontroller enables users to directly burn programs via the on-board USB interface and has Bluetooth and WIFI integrated in the microcontroller for supporting more applications.Features:Small size: only 35 x 34mmDirectly download and debug programs via Micro USB without a programmerLarge-scale I/O ports with gold plating, easy to twist wire on it or sew on to clothes with wires, no need to solderA group of gold plated power interfaces of honeycomb type, convenient to useIntegrated WIFI and Bluetooth DFRobot DFR0575 Beetle ESP32 Microcontroller