ESP32-C3 Super Mini Development Board

The ESP32-C3 Super Mini is a thumb-sized Wi-Fi + Bluetooth LE board built around Espressif's 32-bit RISC-V ESP32-C3 chip. At just 22.5 × 18 mm with a USB Type-C port, it's perfect for small, low-cost IoT nodes, wearables and anywhere a full-size dev board won't fit.

Features

• 32-bit RISC-V single-core CPU at 160 MHz
• 2.4 GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 LE
• 4 MB flash, 400 KB SRAM
• USB Type-C with native USB — program and use the serial monitor without a separate USB-UART chip
• Tiny, breadboard-friendly footprint with BOOT and RESET buttons
• Low-power deep sleep for battery projects

Pinout

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GPIO2, GPIO8 and GPIO9 are strapping pins — don't hold them low while the board powers up. The blue LED on GPIO8 is active-low, and GPIO9 is the BOOT button. GPIO5 (A5) is on ADC2 and can't read analog while Wi-Fi is on, so use A0–A4 for sensors.

Getting started in Arduino IDE

Prefer a video? Here's a quick walkthrough from unboxing to your first sketch:

Good for

• Wi-Fi sensors and smart-home nodes (ESPHome / Home Assistant)
• Bluetooth LE beacons, remotes and wearables
• Replacing an ESP8266 / ESP-01 in compact builds

Logic level is 3.3 V — don't connect 5 V signals directly to the GPIO pins.