The Espressif ESP32-C3-MINI-1U is a compact Wi-Fi + Bluetooth 5 LE module powered by a single-core 32-bit RISC-V processor up to 160 MHz. Featuring 4 MB flash, 400 KB SRAM, and an external U.FL antenna connector, it offers rich peripherals including GPIO, SPI, I²C, I²S, UART, and PWM. With low-power operation, robust ESP-IDF support, and hardware security features, it is ideal for space-constrained, battery-powered IoT applications.