an ultra-compact, cost-effective Internet of Things (IoT) development board powered by the Espressif ESP32-C3FN4 single-core system-on-chip
| • Processor | 32-bit RISC-V single-core CPU running up to 160 MHz |
| • Memory | 4 MB SPI Flash, 400 KB SRAM, and 384 KB ROM |
| • Wireless | 2.4 GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5.0 LE |
| • Dimensions | Approximately 22.5 × 18 mm (coin-sized, breadboard-friendly) |
| • Power Consumption | Around 43 µA in deep sleep mode |
| • Power Input | 5V via USB-C or 3.3V–6V via the VIN/5V pin |
| • Operating Voltage | 3.3V logic level |