ESP32 D1 Mini CH9102

*These are the microcontrollers used on the Duo2Go 2.X,Tetra2Go 1.X and Octa2Go 1.X Features Pins included and attached PCB-mounted antenna 240MHz Dual-Core Processor Wi-Fi + Bluetooth 4.0 + BLE module 4MB (32Mbit) Flash Memory Onboard USB Type-C connector SoC: ESP32 FCC certified Wi-Fi and Bluetooth module (ESP-WROOM-32 Module) USB-to-Serial: Ch9102 USB to UART Bridge GPIO: 3×UART, 3×SPI, 2×I2S, 18×ADC input channels, 2×DAC output channels, 2×I2C, PWM/timer input/output available on every GPIO pin, OpenOCD debug interface, SDIO master/slave (50 MHz), external SPI flash (up to 16MB), and SD-card interface support Size: 39mm × 31mm Voltage Reg.: RT9013 500mA LDO Power Input: 3.0~5.5VDC