DFRobot DFR0575 Beetle ESP32 Microcontroller

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 34mm * Directly download and debug programs via Micro USB without a programmer * 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 * A group of gold plated power interfaces of honeycomb type, convenient to use * Integrated WIFI and Bluetooth

* Specification: * USB supply voltage: 5.0V * VIN supply voltage: DC 3.5 to 6.5V * Processor: Tensilica LX6 dual-core processor (One for high speed connection; one for independent programming) * Frequency: 240MHz * SRAM: 520KB * Flash: 16Mbit * Wi-Fi standard: FCC/CE/TELEC/KCC * Wi-Fi protocol: 802.11 b/g/n/d/e/i/k/r (802.11n, high speed can reach to 150Mbps), converge A-MPDU and A-MSDU, supporting 0.4us protecting interval * Frequency range: 2.4 to 2.5GHz Bluetooth protocol: complies with BR/EDR/BLE standard of Bluetooth v4.2 * On-chip Clock: 40MHz crystal and 32.768kHz crystal * Digital interface: D2, D3, D4, D7 * Analogue interface: A0, A1, A2, A3 * I2C: 1 * Serial port: 1 * Dimensions: 35 x 34mm