ESP32-Super Mini C3 Development Board (HW-466AB)
Shrink your project’s footprint without sacrificing an ounce of performance. The ESP32-Super Mini C3 (Model HW-466AB) is an ultra-compact, thumb-sized IoT development board engineered around Espressif’s next-generation ESP32-C3 system-on-chip.
Unlike older architectures, it features a cutting-edge 32-bit RISC-V single-core processor operating at 160 MHz. Packed with native Wi-Fi and Bluetooth 5 (LE), this tiny titan is designed for high-efficiency wireless data logging, wearables, and discrete smart home automation where space is at an absolute premium.
Key Features
Next-Gen RISC-V Core: Built on an open-source, highly efficient 32-bit RISC-V single-core architecture, striking an incredible balance between raw processing speed and minimal power draw.
Dual Wireless Connectivity: Supports standard 2.4 GHz Wi-Fi ($802.11\text{ b/g/n}$) alongside Bluetooth 5.0 Low Energy (BLE) with long-range support for seamless local configuration and cloud streaming.
Micro-Sized Form Factor: Measuring just 22.5 mm x 18 mm, this board easily slips into small custom enclosures, wearable hardware, or minimalist sensor pods.
Modern USB Type-C Hub: Features a native USB-C interface for seamless programming, serial debugging, and stable 5V power delivery.
Exceptional Low-Power Modes: Optimized for battery-powered or solar-powered remote installations, drawing as little as $\approx 43\mu\text{A}$ in deep sleep.
Developer Friendly: Fully compatible with the Arduino IDE, ESP-IDF framework, PlatformIO, and MicroPython.
Technical Specifications
Feature | Specification |
Model / Hardware SKU | HW-466AB |
Core Microcontroller | ESP32-C3 (RISC-V 32-bit, Single-Core) |
Clock Speed | Up to 160 MHz |
Flash Memory / SRAM | 4 MB Onboard Flash / 400 KB SRAM |
Wireless Protocols | Wi-Fi 2.4 GHz ($802.11\text{ b/g/n}$), Bluetooth 5.0 LE / Mesh |
Operating Voltage | 3.3V Logic Level |
Input Voltage Range | 5V via USB-C or 3.3V – 6.0V via 5V pin |
Deep Sleep Power Draw | 43 Micro-Amps (approx.) |
Usable GPIOs | 11 Digital I/O (All support PWM) |
Analog Inputs (ADC) | 4 to 6 Channels (12-bit ADC) |
Hardware Interfaces | 1x I2C, 1x SPI, 2x UART |
Onboard Layout | 1x User LED (Inverted Logic on GPIO 8), Boot & Reset Buttons |
Hardware & Pinout Overview
The HW-466AB utilizes a smart dual-row layout with 16 pins total (2.54 mm standard breadboard pitch), allowing it to fit effortlessly into your prototypes:
Power Rail Configuration: Includes 5V (External input), GND, and 3V3 (Output for powering low-draw 3.3V sensors or direct regulated input).
Communication Assignment: Default software mapping typically assigns GPIO 8 as SDA and GPIO 9 as SCL for swift I2C hookups to displays and sensor matrices.
Onboard Debug LED: Features a bright blue user-programmable indicator tied directly to GPIO 8. Note: This LED functions on inverted logic (writing LOW turns it ON; writing HIGH turns it OFF).
Tactile Board Controls: Equipped with a dedicated RST button to reboot the system and a BOOT button (GPIO 9) to effortlessly force firmware download mode when flashing.
Common Applications
Wearable IoT Technology: Fitness tracking arrays or compact status alerts that operate over BLE.
Compact Sensor Nodes: Discreet ambient room monitoring, smart agriculture nodes, or battery-operated outdoor data loggers.
Smart Home Integration: Fits cleanly inside standard switchboxes to create custom smart relays, home assistant nodes, or automated actuators.
Hardware Warning: The ESP32-C3 operates strictly on a 3.3V logic level. Connecting 5V data signals directly to the GPIO pins without a logic level converter can permanently damage the microcontroller.
Package Includes:
1 x ESP32-Super Mini C3 Development Board (HW-466AB)
2 x 8-Pin Male Header Strips (Unsoldered/Pre-soldered depending on selection)