The M5Stack Stamp-S3A PIN2.54 is a compact ESP32-S3FN8 module featuring a 240MHz dual-core processor, 8MB Flash, programmable RGB LED, and button input. With 23 GPIOs, 2.54mm SMT headers, and an optimised 3D antenna, it’s perfect for high-density, wireless IoT applications. M5Stack Stamp-S3A PIN2.54 is a highly integrated embedded module based on the Espressif ESP32-S3FN8, equipped with a 240MHz Xtensa® 32-bit LX7 dual-core processor, integrated 8MB Flash, programmable RGB LED, and button input. Featuring an optimised 3D antenna design, it offers enhanced wireless communication capabilities. The module breaks out 23 GPIO pins and is soldered with 2.54mm pitch SMT headers. Its compact size makes it ideal for high-density PCB integration, enabling developers to quickly build compact applications. Features * ESP32-S3FN8 (2.4GHz Wi-Fi) * 2.54mm pitch SMT interface * 23 multifunction GPIO * 8MB Flash * Multiple I/O breakout, supports multiple application forms (SMT, DIP, flying wires) * Integrated programmable RGB LED and button * Development Platform * UiFlow2 * Arduino IDE * ESP-IDF * PlatformIO Specifications Specification Parameter SoC ESP32-S3FN8 DC-DC MUN3CAD01-SC Flash 8MB Input Voltage DC 5V HMI Programmable physical button x 1, programmable RGB LED (WS2812B-2020) x 1 Antenna Type 2.4GHz 3D antenna Module IO Ports Touch sensor, SD/SDIO/MMC host controller, SPI, SDIO/SPI slave controller, EMAC, Motor PWM, LED PWM, UART, I2C, I2S, GPIO, pulse counter IO Ports x23 G0/G1/G2/G3/G4/G5/G6/G7/G8/G9/G10/G11/G12/G13/G14/G15/G39/G40/G41/G42/G43/G44/G46 IO Pitch 2.54mm LCD Pitch 0.5mm@12P or 8P Operating Temp 0 ~ 40°C Product Size 26.0 x 18.0 x 4.7mm Product Weight 3.1g Resources * Documentation Package Contents * 1 x Stamp-S3A PIN2.54 * 1 x Pin Sticker https://elecena.pl/product/29469561/m5stamps3a-with-2-54mm-header-pins 2025-11-01 https://elecena.pl/product/29469561/m5stamps3a-with-2-54mm-header-pins 2025-11-29