The Stamp-C5 is a compact ESP32-C5 wireless module with dual-band Wi-Fi 6, Bluetooth LE, Zigbee and Thread connectivity for connected IoT and embedded projects. The M5Stack Stamp-C5 is a highly integrated wireless connectivity module based on the Espressif ESP32-C5HF4, designed for IoT applications that require efficient and stable communication. It supports 2.4 & 5 GHz dual-band Wi-Fi 6, BLE 5, and IEEE 802.15.4 (Zigbee, Thread) multi-protocol connectivity, meeting device access requirements across different network scenarios. The module uses a RISC-V 32-bit single-core processor with a clock frequency of up to 240MHz, includes 4MB Flash, and integrates hardware resources such as USB Type-C, a battery power input, an FPC expansion interface, and an IPEX-1 antenna connector. The module adopts a 2.54mm pad pitch design, making it easy to quickly connect various peripherals and expand functions. While ensuring connectivity performance and security, it helps developers complete prototype validation and product implementation more efficiently. Features * ESP32-C5HF4 Main Controller * RISC-V 32-bit single-core processor, up to 240MHz * 4MB Flash * Wireless Connectivity * 2.4 & 5 GHz dual-band Wi-Fi 6 * BLE 5 * IEEE 802.15.4 (Zigbee, Thread) * Interface and Hardware Design * USB Type-C * DC 3.7V battery power input * 2.54mm pad pitch * IPEX-1 antenna connector * Rear FPC 0.5mm-12P interface * SGM40567-4.2XG/TR charging IC * 2.4 & 5 GHz shared antenna design * Status Indicators * RED: Charging indicator (blinks while charging; turns off when fully charged) * BLUE: G28 / BOOT indicator Specifications SoC ESP32-C5HF4 @ RISC-V 32-bit single-core processor, up to 240MHz SRAM 384KB Flash 4MB Wi-Fi 2.4 & 5 GHz dual-band Wi-Fi 6 BLE BLE 5 IEEE 802.15.4 Supports Zigbee, Thread USB Interface USB Type-C Battery Input DC 3.7V Antenna IPEX-1 Dual-Band Diplexer LFD182G45DCHD481 (2.4 & 5 GHz shared antenna) Charging IC SGM40567-4.2XG/TR Status Indicator 2 x LED (RED: charging; BLUE: G28 / BOOT) GPIO Output 19x GPIO total (pad 11x GPIO + FPC 8x GPIO) Pad GPIO G1, G2, G3, G4, G5, G6, G7, G8, G9, G10, G28 FPC GPIO G23, G0, G24, G25, G26, G27, G11, G12 Pad Pitch 2.54mm Rear Expansion Interface FPC 0.5mm-12P Charging Current Approx. 200mA Power Consumption Deep sleep (battery powered): 3.7V@13uA Product Size 17.6 x 19.1 x 3.4mm Product Weight 1.8g Resources * Product documents Package Contents * 1x M5StampC5 Module (ESP32-C5) * 1x Antenna