DFRobot Beetle Microcontroller, BLE and Beetle

<P>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.</P><P>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.</P><UL><LI><STRONG>Features:</STRONG></LI><LI>Small size: only 35 x 34mm</LI><LI>Directly download and debug programs via Micro USB without a programmer</LI><LI>Large-scale I/O ports with gold plating, easy to twist wire on it or sew on to clothes with wires, no need to solder</LI><LI>A group of gold plated power interfaces of honeycomb type, convenient to use</LI><LI>Integrated WIFI and Bluetooth</LI></UL>