ESP32C3 SuperMini Getting Started

ESP32C3 SuperMini is a compact IoT development board based on the Espressif ESP32-C3 WiFi and Bluetooth dual-mode chip. It uses a 32-bit RISC-V single-core CPU, supports IEEE 802.11 b/g/n WiFi and Bluetooth 5 (LE), and is designed for low-power wireless applications.

The board has a small footprint, onboard wireless capability, and a practical set of interfaces for embedded development, prototyping, and wearable or space-constrained projects.

• CPU: ESP32-C3, 32-bit RISC-V single-core processor, up to 160 MHz
• WiFi: 2.4 GHz, 802.11 b/g/n
• Bluetooth: Bluetooth 5.0 LE
• Memory: 400 KB SRAM, 384 KB ROM, built-in 4 MB flash
• Chip Model: ESP32C3FN4
• Interfaces: 1 x I2C, 1 x SPI, 2 x UART, 11 x GPIO/PWM, 4 x ADC
• Power: Deep sleep current about 43 uA
• LED: Onboard blue LED on GPIO8
• Size: Approx. 22.52 x 18 mm

If external power is needed, connect the positive terminal to 5V and the negative terminal to GND. The board supports approximately 3.3V to 6V input.

If you want to use an external antenna, connect it as shown below.

You need the following:

• 1 x ESP32C3 SuperMini
• 1 x Computer
• 1 x USB Type-C data cable

Connect the ESP32C3 SuperMini to your computer with a USB Type-C data cable:

1. Download and install the latest Arduino IDE from Arduino Official Website.
2. Open Arduino IDE.
3. Add the ESP32 board package URL in File > Preferences:

https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json

1. Open Tools > Board > Boards Manager, search for `esp32`, and install the latest ESP32 package.
2. Open Tools > Board > ESP32 Arduino and select ESP32C3 Dev Module.
3. Open Tools > Port and select the COM/serial port of the connected board.

Board package installation:

Board selection:

Copy the following code into Arduino IDE:

int led = 8;
 
void setup() {
  pinMode(led, OUTPUT);
}
 
void loop() {
  digitalWrite(led, HIGH);
  delay(1000);
  digitalWrite(led, LOW);
  delay(1000);
}

After upload, the onboard LED will blink once per second.

• ESP32C3 SuperMini MicroPython Firmware Download
• MicroPython Firmware Download Tutorial

• ESP32 Arduino Tutorial
• ESP32 MicroPython Tutorial
• ESP32-C3 Official Learning Resources
• ESP32-C3 Collected Learning Resources

Enter download mode:

• Method 1: Hold BOOT while powering on.
• Method 2: Hold BOOT, press RESET, release RESET, then release BOOT.

Press the RESET button once after a successful upload.

See: JTAG/serial debug unit solution

Set USB CDC On Boot to Enabled in the Arduino tools menu.