DIYmall ESP32-C3 Super Mini Development Board User Manual

1. Introduction

Thank you for choosing the DIYmall ESP32-C3 Super Mini Development Board. This manual provides essential information for the safe and effective use of your development board. The ESP32-C3 is a low-power, high-performance Wi-Fi wireless communication chip from Espressif Systems, part of the ESP32 series. It offers reliable Wi-Fi connectivity and extensive peripheral support, making it ideal for various Internet of Things (IoT) and Arduino applications.

This product is intended for users aged 16 years and above.

For additional documentation, a generic EU Universal Product Safety & User Manual (PDF) is available. Please refer to it for general safety and compliance information.

2. Safety & Warnings

WARNING: To reduce the risk of injury, fire, electric shock, or property damage, please read and follow all safety information and instructions before using this product.

This product is intended for users aged 16 years and above.
Not suitable for children under 3 years. Small parts may present a choking hazard.
Keep away from fire, high temperature, water, moisture, and corrosive environments.
Do not disassemble, modify, or repair the product without authorization.
Use the product only for its intended purpose. Misuse may cause injury or damage.
If the product (especially electronic parts) is damaged, overheated, emits smoke, unusual odor, or noise, stop using it immediately and contact support.
Keep packaging materials (plastic bags, foam, etc.) away from children to avoid suffocation risk.
For indoor use only unless otherwise specified on the product or packaging.

3. Product Overview

3.1 Key Features

CPU: ESP32-C3, 32-bit RISC-V single-core processor running up to 160 MHz.
Wireless Connectivity: WiFi (802.11b/g/n protocol, 2.4GHz, supports Station, SoftAP, SoftAP+Station, mixed modes) and Bluetooth 5.0.
Ultra-low Power Consumption: Deep sleep power consumption is approximately 43μA.
Memory: 400KB SRAM, 384KB ROM, and built-in 4M flash.
Chip Model: ESP32C3FN4.
Compact Size: Ultra-small form factor (22.52mm x 18mm), suitable for wearables and small projects.
Security Features: Crypto hardware accelerator supporting AES-128/256, hashing, RSA, HMAC, digital signatures, and secure boot.
Rich Interfaces: 1xI2C, 1xSPI, 2xUART, 11xGPIO (PWM), 4xADC.
Design: Single-sided component, surface mount design.
Onboard LED: Blue light connected to GPIO 8 pins.

3.2 Components

Each set typically includes:

ESP32-C3 Super Mini Development Board(s)
2.4G Antenna(s) (for external antenna versions)
Pin headers (for connection)

The product is available in different configurations regarding antenna type:

Set 01: Default external antenna.
Set 02: Default onboard antenna.
Set 03: Default external antenna, requires connecting the antenna.
Set 04: Default onboard antenna, requires manual capacitor position change to use an external antenna.

3.3 Visual Overview

Product overview video showing the ESP32-C3 development board and its features.

Multiple ESP32-C3 boards with external antennas

Image: Multiple ESP32-C3 Super Mini Development Boards, each connected to an external 2.4G antenna.

Top and bottom view of a single ESP32-C3 board

Image: Top and bottom views of a single ESP32-C3 Super Mini Development Board, highlighting its compact design and components.

Image: Close-up view of the ESP32-C3 chip on the development board, showing its intricate details.

Image: Diagram illustrating the compact dimensions of the ESP32-C3 Super Mini Development Board: 18.00mm width, 15.24mm pin-to-pin width, and 22.52mm length.

Image: Detailed pinout diagram of the ESP32-C3 Super Mini Development Board, labeling power, ADC, SPI, GND, UART, and Digital GPIO pins.

4. Setup Instructions

4.1 Preparation

Remove all protective films or packaging materials from the development board and any accessories.
If your board variant requires an external antenna (e.g., Set 01 or Set 03), ensure it is securely connected. For Set 04, manual modification may be required.

4.2 Power Supply

The ESP32-C3 board can be powered via USB-C or an external power supply.

USB-C Power: Connect the provided USB-C cable to the board and a certified 5V power adapter.
External Power Supply: If an external power supply is required, connect the positive (+) lead of your 3.3-6V power supply to the 5V position on the board and the negative (-) lead to the GND pin.

Important Note: When using an external power source, the USB port cannot be connected simultaneously. Choose either USB or external power, but not both.

4.3 Entering Download Mode

To upload firmware or program the ESP32-C3, you need to put it into download mode:

Press and hold the BOOT button on the ESP32-C3 board.
While holding BOOT, press the RESET button.
Release the RESET button.
Then, release the BOOT button.

At this point, the ESP32-C3 will enter download mode. You may need to re-enter download mode each time you connect or if the connection becomes unstable during programming.

5. Operation

5.1 Power On

Press and hold the power button (if present, otherwise power is supplied upon connection) for approximately 3 seconds to power on the device.

5.2 Basic Function Cycling

If your project includes a button for cycling through functions, a short press of this button will typically advance through available modes or states.

5.3 Intended Use

Use the product only as described in this manual and for its intended purpose in IoT and Arduino development projects.

5.4 After Use

To power off the device, turn it off (if applicable) and unplug it from the power source.

6. Maintenance & Storage

6.1 Cleaning

Turn off the device before cleaning.
Use a soft, lint-free cloth to gently wipe the board.
Do not use harsh chemicals or abrasive materials, as these can damage the components.

6.2 Storage

Store the development board in a dry place at room temperature (15°C - 35°C).
Keep it away from direct sunlight and excessive moisture.

6.3 Long-term Storage

If the device will not be used for an extended period, charge any connected batteries (if applicable) to approximately 50% every 3 months to protect battery life and prevent deep discharge.

7. Troubleshooting

7.1 Common Issues and Solutions

Board not powering on:: Ensure the power supply is correctly connected and providing the correct voltage (5V via USB-C or 3.3-6V via external pins). Verify that only one power source (USB or external) is connected at a time.
Unable to upload firmware:: Make sure the board is correctly in download mode. Follow the steps in Section 4.3 carefully. If the port disconnects during upload, try re-entering download mode and restarting the upload process.
Unstable connection:: Check all physical connections, including USB cables and jumper wires. Ensure the power supply is stable. Re-entering download mode can sometimes resolve unstable port issues during programming.
Wi-Fi or Bluetooth not working:: Verify that the correct antenna is connected and configured for your specific board variant (refer to Section 3.2). Ensure your code correctly initializes and uses the Wi-Fi/Bluetooth modules.

8. User Tips

Many users appreciate the compact size and robust features of this board for various IoT projects.
When working with different antenna configurations (onboard vs. external), double-check the specific requirements for your chosen set to ensure optimal performance.
The product is generally considered to be of good quality, providing a reliable platform for development.

9. Technical Specifications

Feature	Details
Product Name	ESP32-C3 Super Mini Development Board
Model Number	FZ6331T2+FZ13132
CPU	ESP32-C3, 32-bit RISC-V single-core processor, up to 160 MHz
Chip Model	ESP32C3FN4
WiFi	802.11b/g/n protocol, 2.4GHz
Bluetooth	Bluetooth 5.0
Memory	400KB SRAM, 384KB ROM, built-in 4M flash
Input Voltage	5V 1A (USB-C) / 3.3-6V (External)
Rated Power	≤5W
Deep Sleep Power Consumption	~43μA
Interfaces	1xI2C, 1xSPI, 2xUART, 11xGPIO(PWM), 4xADC
Dimensions	22.52mm x 18mm
Material	Composite Material, ABS/Electronic Components
Operating Temperature	-10°C ~ 40°C
Recommended Age	16+ years
Intended Use	Indoor Use Only
Certifications	CE, RoHS

10. Compliance Information

This product complies with the essential requirements of the following EU Directives and Regulations (where applicable):

General Product Safety Regulation (EU) 2023/988 (GPSR)
Toy Safety Directive 2009/48/EC (for applicable products)
EMC Directive 2014/30/EU (for applicable products)
RoHS Directive 2011/65/EU and (EU) 2015/863
WEEE Directive 2012/19/EU
REACH Regulation (EC) No 1907/2006

The CE marking indicates conformity with applicable EU Directives. (Note: Not all products may require CE marking.)

11. Disposal & Recycling

WEEE Directive: This symbol indicates that this product should not be treated as household waste. According to the WEEE Directive (2012/19/EU), it must be disposed of at an appropriate electronic waste collection point for recycling to prevent potential negative consequences for the environment and human health.

Packaging Materials: Dispose of packaging materials responsibly. Recycle paper, cardboard, and plastic where facilities exist.

Protect our environment. Thank you for your cooperation.

12. Customer Support

If you encounter any problems such as product damage, missing parts, or have technical questions, please contact us through the following channels:

AliExpress Order Chat Window: Contact us directly through your order page.
WhatsApp Support: +86-19937531992
Email Support: info@unikelc.com

We will reply to you as soon as possible.

wishiot ESP32-C3 Super Mini Development Board