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M5Stamp C3 Mate with Pin Headers

by M5Stack

M5Stack just added a new family to its popular series of modules with the new Stamp-C3 featuring ESPRESSIF ESP32-C3 RISC-V MCU with Wi-Fi and Bluetooth 5 (LE) connectivity for IoT edge devices.

By combining RSA-3072-based secure boot and the AES-128-XTS-based flash encryption, M5Stack offers a more secure way to answer Bluetooth security concerns, while also make it optimal for industrial IoT equipment collecting sensor data within a factory or a building.

The Stamp-C3 is based on 32-bit RISC-V microcontroller and operates at a maximum clock frequency of 160 MHz. With 400 KB of internal RAM and 4 MB Flash, it can facilitate many different use-cases involving connected devices. The Stamp-C3 provides full Bluetooth® 5.0 long-range (LR) support including long-range and mesh networking functions and achieves building devices with great coverage and improved usability. Furthermore, the exceptional heat resistant plastic enclosure is sustained at a higher operating temperature.


    • Three types soldering options are available(SMT, DIP, flywire), with a high-temperature resistant plastic enclosure, Peak temperature = 230℃
    • Stamp-C3 contains 5V->3.3V DC/DC design, GPIOx13, programmable RGB LED x1, Reset button x1, button x1, 3D antenna,providing stable and reliable wireless communication.
    • Stamp-C3 fully compatible with Arduino, ESP32-IDF, and other mainstream development platforms to quickly build various applications. (UIFlow support coming soon)


  • 1 x M5Stamp C3
  • 1 x Heat Resistant Sticker
  • 2 x 2.54-9P Pin
  • 2 x 2.54-6P Pin
  • 2 x 90° Grove Connector
  • 1 x M2 Hex Key


  • DIY Prototyping
  • Home Appliances
  • Industrial Automation


Specifications Parameters
ESP32-C3 32bit RISC-V single-core processor, clocked at 160 MHz
Wi-Fi 2.4 GHz band supports 20 MHz and 40 MHz bandwidth, IEEE 802.11 b/g/n protocol, data rate up to 150 Mbps
Bluetooth Bluetooth 5, Bluetooth mesh, rate support 125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps
Input voltage 5V @ 500mA
HMI Programmable physical button x 1, reset debugging button x 1, programmable RGB LED (SK6812) x 1
USB interface TypeC x1
Antenna Type 2.4G 3D Antenna
Module peripheral interface resources ADC, GPIO, SPI, UART, I2C, I2S, PWM, RMT, DMA, USB serial port, TWAI
IO interface x13 G21, G20, G9, G18, G19, G1, G0, G10, G8, G7, G6, G5, G4
IO interface spacing 2.54mm
Net weight 3.8g
Product size 34 x 20 x 4.5mm
Packing size 85 x 55mm sealing bag (translucent)