SKU:C050-B, K051, K051-B

Tutorial & Quick-Start

This tutorial will show you how to control STAMP-PICO devices through the UIFlow graphical programming platform
This tutorial will show you how to program and control STAMP-PICO devices through Arduino IDE
This tutorial will show you how to control STAMP-PICO devices through Micropython programming


STAMP-PICO features an ultra-compact design with two low-power Xtensa® 32-bit LX6 microprocessors at 240MHz on a PCB as tiny and delicate as a postage stamp. low power consumption. It is ideal for any space-constrained or battery-powered devices such as wearables, medical devices, sensors, and other IoT devices.

  • 1, MULTIFORM: 5 options of installation, means endless possibilities! (SMT, DIP, fly wire, grove interface), with a high-temperature resistant plastic shell, 3D antenna and components can be better protected.

  • 2, LOW-CODE DEVELOPMENT: STAMP-PICO supports UIFlow graphical programming platform, scripting-free, cloud push; and fully compatible with Arduino, MicroPython, ESP32-IDF, and other mainstream development platforms to quickly build various applications.

  • 3, HIGH INTEGRATION: STAMP-PICO contains 5V->3.3V DC/DC port, GPIOx12, programmable RGB light x1, button x1, finely tuned RF circuit, providing stable and reliable wireless communication.

  • 4, STRONG EXPANDABILITY: Easy access to M5Stack's hardware and software ecology system: a wealth of sensors, actuators, functional modules, and accessories to choose from, Extremely fast adaptation.

Product Features

  • Chip-set:ESP32-PICO-D4 (2.4GHz Wi-Fi dual mode)
  • Support UIFlow graphical programming
  • Multi-IO pinout, support multiple application forms (SMT, DIP, fly-by-wire)
  • Integrated programmable RGB LEDs and buttons
  • Miniature module


  • Instrumentation
  • Wi-Fi Remote Monitoring/Control
  • Smart Home
  • Color LED Control
  • Fire/security intelligent integrated management
  • Smart Card Terminal
  • Wireless POS


Resources Parameter
Master Control Resource ESP32-PICO-D4
Flash 4MB
Input Voltage 5V @ 500mA
Power consumption Normal standby:5V@29mA, WIFI STA mode: 5V@60mA, BT mode data sending status: 5V@84mA, Deep-sleep mode: 5V@0.35mA
Wireless communication distance AP Mode: 16m
UI Programmable physical keys x 1, Programmable RGB LED (SK6812) x 1
Antenna Type 2.4G 3D Antenna
Wi-Fi 802.11 b/g/n (up to 150 Mbps for 802.11n), spectrum range: 2.4 GHz ~ 2.5 GHz
Module Resource Interface ADC, DAC, touch sensor, SD/SDIO/MMC host controller, SPI, SDIO/SPI slave controller, EMAC, motor PWM, LED PWM, UART, I2C, I2S, IR remote controller, GPIO, pulse counter
IO interface x12 G0, G1, G3, G26, G36, G18, G19, G21, G22, G25, G32, G33
IO interface spacing 2.54mm
perating temperature 0°C to 60°C
Net weight 2.6g
M5Stamp Pico (5pcs) Gross weight 18g
M5Stamp Pico Mate Gross weight 6g
M5Stamp Pico DIY Kit Gross weight 12g
Fixing screw specifications M2*4 countersunk head hexagon socket mechanical teeth
Product Dimensions 18 * 24 * 4.6mm
Package Size 85*55mm sealing bag (translucent)


  • Purchase link
  • M5Stamp Pico Mate:
    • 1 x M5Stamp Pico
    • 1 x Heat Resistant Sticker
    • 2 x 2.54-9P header
    • 2 x 2.54-6P header
    • 1 x 90° Grove Connector
    • 1 x Hex Key

  • Purchase link
  • M5Stamp Pico DIY Kit:
    • 1 x M5Stamp Pico
    • 1 x Heat Resistant Sticker
    • 2 x 2.54-9P header
    • 2 x 2.54-6P header
    • 1 x 90° Grove Connector
    • 1 x Hex Key
    • 1 x ESP32 Downloader

ESP32 Downloader

Before burning, you need to connect a USB-TTL burning board for STAMP-PICO, and proceed according to the board silkscreen connect. Install the driver corresponding to the burning board on the PC.

The most convenient way is to Purchase the STAMP-PICO package version with downloader , the line sequence of the matching downloader It is consistent with STAMP-PICO, it can be directly plugged in for programming without wiring. Currently M5 provides downloaders of two driver chip versions, CP210X (applicable to CP2104 version)/CP34X (applicable to CH9102 version) driver compressed package. After decompressing the compressed package, select the installation corresponding to the number of operating systems Package to install. (If you are not sure which USB chip your device uses, you can install two drivers at the same time)
Driver name Applicable driver chip Download link
CP210x_VCP_Windows CP2104 Download
CP210x_VCP_MacOS CP2104 Download
CP210x_VCP_Linux CP2104 Download
CH9102_VCP_SER_Windows CH9102 Download
CH9102_VCP_SER_MacOS v1.7 CH9102 Download


SK6812 (RGB LED) and Button

SK6812 DI /
Button / SW


Module size

The shell supports Reflow Profile

Program Download

  • STAMP-PICO adopts the most streamlined circuit design, so it does not include the program download circuit, users can download the program through the USB-TTL burner.