STAMPS3 is a highly integrated embedded controller designed for IoT applications. It utilizes the Espressif ESP32-S3FN8 main control chip and features 8MB of SPI flash memory. Powered by a high-performance Xtensa 32-bit LX7 dual-core processor, STAMPS3 delivers impressive processing power with a main frequency of up to 240MHz. This module is specifically designed to meet the demands of IoT projects that require embedded main control modules.

STAMPS3 comes equipped with a built-in highly integrated 5V to 3.3V circuit, ensuring stable power supply for reliable operation. It features an RGB status indicator and a programmable button for enhanced user control and visual feedback. The module conveniently leads out 23 GPIOs on the ESP32-S3, allowing for extensive expansion capabilities. The GPIOs are accessible through 1.27mm/2.54mm spacing leads, supporting various usage methods such as SMT, DIP row, and jump wire connections. STAMPS3 offers a compact form factor, delivering strong performance, rich expansion IO, and low power consumption.

STAMPS3 is the ideal choice for IoT application scenarios that require the integration of embedded controllers. Its compact volume and powerful features make it suitable for a wide range of projects, providing reliable performance and flexible expansion options.

Download Mode
If you want to enter download mode, press and hold the G0 button on StampS3 before turning it on, then release it after powering it on.
GPIO46 is drop-down by default.


This tutorial will show you how to program and control STAMPS3 devices through Arduino IDE


This tutorial will show you how to control the STAMPS3 device through the UIFlow2.0 graphical programming platform


  • ESP32-S3FN8(2.4GHz Wi-Fi)
  • Minimal system board
  • Multi-IO lead-out, support multiple application forms (SMT, DIP, flying wire)
  • Integrated programmable RGB LEDs and buttons
  • Support UIFlow graphical programming


  • 1x StampS3
  • 1x HY2.0-4P terminal
  • 1 x 2.54-9P header
  • 1 x 2.54-6P header
  • 1 x Hex Key
  • 1 × User manual


  • Smart home
  • Wearables
  • Medical equipment


Resources Parameters
DCDC Highly integrated MUN3CAD01-SC
Flash 8MB
Input voltage 5V
Interactive Programmable physical buttons x 1, programmable RGB LED (WS2812B-2020) x 1
Antenna type 2.4G 3D antenna
Module resource interface Touch sensor, SD/SDIO/MMC master controller, SPI, SDIO/SPI slave controller, EMAC, motor PWM, LED PWM, UART, I2C, I2S, GPIO, pulse counter
IO interface x23 G0/G1/G2/G3/G4/G5/G6/G7/G8/G9/G10/G11/G12/G13/G14/G15/G39/G40/G41/G42/G43/G44/G46
Connection method SMT/DIP (pitch 2.54mm and 1.27mm)/Jump Wire
IO interface spacing 2.54mm和1.27mm
lcd interface spacing 0.5mm@12pin or 8pin
Operating temperature 0°C to 40°C
Product Size 26mm × 18mm × 4.6mm
Package Size 136mm × 92mm × 13mm
Product Weight 3.2g
Package Weight 7.5g


Bottom of PCB reserved TFT screen SPI interface,FPC connector check 8PIN 12PIN specification。

PCB package

Module Size

module size