pdf-icon

Stamp-C3U Mate

SKU:K122

Description

Stamp-C3U Mate is an accessory kit for the Stamp-C3U minimum core board.
The kit includes a Stamp-C3U along with female headers, male headers, a HY2.0-4P female socket and other practical accessories, making it easy to integrate the Stamp-C3U into your circuit quickly.

Stamp-C3U is a cost-effective RISC-V minimum core board powered by the ESP32-C3 SoC, which integrates a 32-bit single-core RISC-V processor running at up to 160 MHz. It comes with 400 KB SRAM + 4 MB Flash and built-in 2.4 GHz Wi-Fi. The module supports secure boot, flash encryption and digital signature. Despite its small size, it offers powerful features to meet a wide range of IoT application requirements.

Features

  • Supports multiple mounting methods (SMT, DIP, flying leads)
  • High-temperature plastic armor, SMT reflow up to 230 °C
  • On-board 5 V → 3.3 V DC/DC circuit, 14 × GPIO
  • USB Type-C connector
  • 1 × Programmable RGB LED, 1 × Reset button, 1 × User button
  • High-performance 3D antenna for stable and reliable wireless communication
  • ESP32 minimum system board
  • Development Platform
    • Arduino IDE
    • ESP-IDF
    • PlatformIO

Includes

  • 1 × Stamp-C3U
  • 1 × High-temperature Sticker
  • 2 × 2.54-12P Female Header
  • 2 × 2.54-10P Male Header
  • 2 × HY2.0-4P Female Socket (90°)
  • 1 × Hex Key L-Shape 1.5 mm (For M2 Screw)

Applications

  • DIY & prototyping
  • Industrial automation
  • Smart home

Specifications

Specification Parameter
SoC ESP32-C3@32-bit RISC-V Single-Core Processor, Main Frequency up to 160MHz
Flash 4MB
SRAM 400KB
ROM 384KB
RTC SRAM 8KB
Wi-Fi 2.4 GHz Wi-Fi (supports 20/40MHz bandwidth, 802.11 b/g/n, up to 150Mbps)
Input Voltage 5V@500mA
Human-Machine Interaction Programmable Physical Button x 1, Reset/Debug Button x 1, Programmable RGB LED (SK6812) x 1
USB Interface USB Type-C x 1
Antenna Type 2.4G 3D Antenna
Module Peripheral Interface Resources ADC, GPIO, SPI, UART, I2C, I2S, PWM, RMT, DMA, USB Serial, TWAI
IO Interfaces x14 G0, G1, G3, G4, G5, G6, G7, G8, G9, G10, G18, G19, G21, G22
IO Interface Pitch 2.54mm
Mounting Screw Specification M2 x 4 Countersunk Hex Socket Machine Screw
Product Size 34.0 x 20.0 x 4.6mm
Product Weight 3.5g
Package Size 138.0 x 93.0 x 5.6mm
Gross Weight 9.8g

Learn

Enter Download Mode Operation
1. While powered off, press and hold the center button (G9) on the Stamp-C3U. 2. Connect to the PC; once the port is recognized, flash the firmware.
USB CDC Enable: By default, USB CDC is disabled. Serial output on boot is provided via UART0. To output via USB, enable USB CDC in the IDE before flashing. (Arduino users: ToolsUSB CDC on BootEnabled. For IDF users, please refer to the official ESP-IDF documentation.)

Reflow Soldering Temperature Curve for the Shell

Schematics

PinMap

SK6812, Button

ESP32-C3 G2 G9
SK6812 DI /
Button / SW

Model Size

PCB

Datasheets

Softwares

ESP-IDF

Video

Product Comparison

The difference between C3U and C3 is that STAMP-C3U removes the USB download chip and uses the ESP32-C3’s built-in USB Serial for programming.

Model SoC IO Count Button IO USB Download Chip USB Interface Function
STAMP-C3 ESP32-C3 13 G3 CH9102 Download / Serial
STAMP-C3U ESP32-C3 14 G9 / Download / JTAG / CDC Serial