M5Stack M5Stamp C3U Mate with Pin Headers
📦 Location of the warehouse: China
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M5Stack M5Stamp C3U Mate with Pin Headers
The M5Stamp C3U is a highly compact IoT development module powered by the ESPRESSIF ESP32-C3 RISC-V microcontroller with Wi-Fi 5 (802.11 b/g/n) and BLE connectivity. Designed for smart home devices, industrial automation, and a wide range of embedded applications, it delivers reliable wireless performance in a small footprint.
Equipped with RSA-3072 secure boot and AES-128-XTS flash encryption, the M5Stamp C3U ensures high-level security for connected environments. Its durable plastic enclosure offers excellent heat resistance, making it suitable for operation in high-temperature industrial settings.
Key Features:
-
Microcontroller: 32-bit RISC-V ESP32-C3, up to 160 MHz
-
Memory: 400 KB internal RAM, 4 MB Flash
-
Connectivity: Wi-Fi 5 (802.11 b/g/n), BLE
-
Security: RSA-3072 secure boot, AES-128-XTS flash encryption
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Form Factor: Ultra-compact, ideal for embedded IoT applications
-
Durability: Heat-resistant plastic casing for industrial environments
Product Features
- MULTIPLE STYLE:
- Three types of soldering options are available (SMT, DIP, flywire);
- High-temperature resistant plastic enclosure, Peak temperature = 230℃;
- HIGH INTEGRATION:
- M5Stamp C3 contains 5V->3.3V DC/DC design, GPIOx14;
- USB Type C port;
- Programmable RGB LED x1, Reset button x1, button x1;
- 3D antenna, providing stable and reliable wireless communication.
- DEVELOPMENT PLATFORM:
- Arduino, ESP32-IDF (UIFlow support coming soon)
Include
- M5Stamp C3U (5pcs):
- 5 x M5Stamp C3U
- 5 x Heat Resistant Sticker
Application
- DIY, Prototyping
- Industrial Automation
- Smart Home
- Wearable Devices
- Medical Devices
- Consumer Electronics
Note: The newly updated C3U shares the same features as the C3, but the difference is that the M5Stamp C3U without the USB download chip and the program download method is different（(The C3U uses the ESP32-C3's built-in USB Serial for program download)）. If you are looking for a more affordable project, you can add this to your shopping list!
Program Download/Notes
Enter the program download mode operation:
1. Long press the center button (G9) of STAMP C3U under power failure conditions.
2. Connect to the computer, after the port is successfully identified, program burning.
USB CDC enabled:
By default, USB CDC is not enabled, the serial port output started by C3U will be output through UART0, if you need to output through USB, please use IDE to make it USB CDC before downloading the program option enabled. (Arduino users can enable it through Tools->USB CDC on Boot-Enabled, IDF users please refer to ESP IDF official documentation.)
product comparison
| Model | Master | IO quantity | Button IO | USB chip | USB interface function |
|---|---|---|---|---|---|
| STAMP-C3 | ESP32-C3 | 13 | G3 | CH9102 | Download / Serial |
| STAMP-C3U | ESP32-C3 | 14 | G9 | / | Download / JTAG / CDC Serial |
Specifications
| Specifications | Parameters |
|---|---|
| ESP32-C3 | 32bit RISC-V single-core processor clocked at 160 MHz |
| Storage | 384KB ROM, 400KB SRAM, 8KB RTC SRAM, 4MB FLASH |
| 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 |
| 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 x14 | G0, G1, G3, G4, G5, G6, G7, G8, G9, G10, G18, G19, G21, G22 |
| IO interface spacing | 2.54mm |
| Net weight | 3.8g |
| Product size | 34 * 20 * 4.6mm |
| Packing size | 85*55mm sealing bag (translucent) |
Effective Date: March 27, 2025
At OpenELAB, we are committed to providing accurate product descriptions and delivering high-quality products. If you experience any issues with your purchase, please notify us within 60 days of the shipment date.
1. Warranty Disclaimer
Unless explicitly stated in a specific agreement or purchase order, OpenELAB makes no warranties—express or implied—regarding the fitness, suitability, or merchantability of any product for a particular purpose or special use.
2. Warranty Policy
Warranty Period
The standard warranty period for products sold by OpenELAB is 12 months from the date of delivery.
Under this warranty, OpenELAB will make a reasonable effort to repair or replace products free of charge if defects are due to issues with raw materials, design, or manufacturing.
If the defect qualifies under this policy but falls outside the covered scope, reasonable charges may apply for repair or replacement.
After the warranty period, support may still be available at a reasonable fee.
Warranty Exclusions
The warranty does not apply in the following cases:
- The product is beyond the 12-month warranty period.
- Damage due to misuse, improper maintenance or storage, or failure to follow the user guide or manual.
- Issues caused by Force Majeure events (e.g., natural disasters, war, legal changes, etc.).
- Unauthorized repair attempts by the customer.
- The product is not defective but has been opened and is non-returnable by policy.
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If you're not satisfied with your purchase, you may be eligible for a return or exchange:
- Return for Refund: Within 15 days of receipt (unopened).
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