M5Stack Stamp-C5, also known as the M5Stamp-C5, is a tiny wireless IoT USB-C board based on the Espressif ESP32-C5 RISC-V microcontroller with dual-band WiFi 6, Bluetooth LE, and 802.15.4 (Zigbee/Thread) connectivity.Despite its small size (19.1 x 17.6mm), the module exposes up to nineteen GPIO pins, eleven on standard 2.54mm pitch headers and castellated holes, and eight on an FPC extension connector. The board also supports battery charging and ships with an external IPEX antenna for wireless connectivity, since there’s no built-in antenna.M5Stack Stamp-C5 specifications:
Wireless MCU – Espressif Systems ESP32-C5HF4
Single-core 32-bit RISC-V processor @ up to 240 MHz
Low-power RISC-V core @ 48 MHz acting as the main processor for power-sensitive applications
Memory – 384 KB SRAM on-chip
