ESP8684-MINI Small Wi-Fi® & BLUETOOTH® 5 Modules Espressif Systems ESP8684-MINI Small 2.4GHz Wi-Fi® and BLUETOOTH® 5 Modules are built based on the ESP8684 series of SoCs with a RISC-V single-core microprocessor. The ESP8684-MINI offers an onboard PCB antenna or external antenna connector. The devices provide a rich set of peripherals, ideal for smart homes, industrial automation, health care, and consumer electronics. These peripherals range from UART, I2C, LED PWM controller, general DMA controller, temperature sensor, and SAR ADC. It also includes SPI, Dual SPI, and Quad SPI interfaces.