ESP32 Zero

The ESP32-C3-Zero and ESP32-S3-Zero are ultra-compact, high-performance IoT modules featuring castellated holes for easy integration into other circuit boards. These modules include an onboard USB Type-C connector, exposing most unused pins while maintaining a small footprint.

Powered by either the ESP32-C3FN4 or ESP32-S3FH4R2 SoC, these modules feature low-power Wi-Fi and Bluetooth 5 (BLE), along with essential security features such as a hardware encryption accelerator, RNG, HMAC, and digital signature module—making them ideal for IoT, mobile devices, wearables, and smart home applications.

Key Features:

ESP32-C3-Zero

• Low-power RISC-V 32-bit single-core processor, up to 160MHz
•  2.4GHz Wi-Fi (802.11 b/g/n) & Bluetooth® 5 (LE)
•  400KB SRAM, 384KB ROM, and 4MB Flash memory
•  Integrated USB Serial Full-Speed Controller (no external USB-UART needed)
•  15 × GPIO for flexible configurations
•  Peripheral support: 3 × SPI, 1 × I2C, 2 × UART, 1 × I2S, 2 × ADC
• ws2812 RGB LED

ESP32-S3-Zero

•  Xtensa® 32-bit LX7 dual-core processor, up to 240MHz
•  2.4GHz Wi-Fi (802.11 b/g/n) & Bluetooth® 5 (LE)
•  512KB SRAM, 384KB ROM, 4MB Flash memory, and 2MB PSRAM
•  Integrated USB Serial Full-Speed Controller (no external USB-UART needed)
•  24 × GPIO for flexible configurations
•  Peripheral support: 4 × SPI, 2 × I2C, 3 × UART, 2 × I2S, 2 × ADC
• ws2812 RGB LED

Important Notes
🔹 These devices do not include a USB-UART chip and are programmed directly over USB.
🔹 To enter flashing mode, hold the BOOT button while connecting the USB cable.

Compatible with Arduino IDE, Platform IO, ESP-IDF and many other esp32 based platforms