The ESP32-C3 Super Mini is a compact ESP32-series microcontroller development board with 4MB of flash for running programs. It exposes multiple GPIOs for analog inputs (ADC), digital interfaces like I2C (SDA/SCL) and SPI, and includes a built-in USB-C interface for serial programming/monitoring. Power is typically provided via the board’s 3.3V/5V pins or USB-C, while GND is shared with the external circuit.
| Pin | Signal | Description |
|---|---|---|
5V |
power | 5V VIN |
GND |
ground | GND |
3.3V |
power | 3.3V power |
4 |
SCK, FSPIHD, MTMS, ADC1_4 | gpio 4 |
3 |
ADC1_3 | gpio 3 |
1 |
ADC1_1, XTAL_32K_N | gpio 1 |
2 |
ADC1_2, FSPIQ, BOOT | gpio 2 |
0 |
ADC1_0, XTAL_32K_P | gpio 0 |
5 |
ADC2_0, MTDI, MISO, FSPIWP | gpio 5 |
6 |
MTCK, MOSI, FSPICLK | gpio 6 |
7 |
MDTO, SS, FSPID | gpio 7 |
8 |
Builtin LED, LOG, SDA | gpio 8 |
9 |
BOOT, SCL | gpio 9 |
10 |
JTAG, FSPICS0 | gpio 10 |
20 |
TXD0 | gpio 20 |
21 |
RXD0 | gpio 21 |
USB-C |
Serial USB | USB-C connector |
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