he ESP32-S3 Supermini HW-747 is a compact, high-performance IoT development board designed for projects where size, wireless connectivity, and processing power matter. It is based on the ESP32-S3 dual-core 32-bit processor, supports 2.4GHz WiFi and Bluetooth 5 LE, and includes 4MB Flash + 2MB PSRAM, making it suitable for embedded IoT, wearable electronics, smart sensors, compact automation devices, and wireless control applications.
This board is especially attractive for customers who want the power of ESP32-S3 in a thumb-size form factor, with USB-C programming/charging, external and onboard Li-ion/LiPo battery charging pads.
Features
- ESP32S3 SuperMini is positioned as a high-performance, low-power, cost-effective IoT mini development board for low-power IoT applications and wireless wearable applications.
- PSRAM 2MB, Type: QSPI
- Powerful CPU: ESP32-S3, 32-bit dual-core Xtensa LX7 processor, up to 240 MHz
- Wi-Fi:
- - 2.4 GHz IEEE 802.11 b/g/n
- - Station Mode
- - SoftAP Mode
- - Station + SoftAP Mode
- Bluetooth:
- Bluetooth 5 LE (BLE)
- Ultra-low power consumption: deep sleep power consumption of about 43μA
- Rich board resources: 512 KB SRAM, 384 KB ROM, 4 MB Flash, 2 MB PSRAM
- Ultra-small size: as small as a thumb (22.52x18mm) Classic form factor for wearables and small projects.
- Reliable security features: cryptographic hardware accelerator with support for AES-128/256, hash, RSA, HMAC, digital signature and secure boot
- Rich interfaces: 1xI2C, 1xSPI, 2xUART, 11xGPIO (PWM), 4xADC
- Onboard Li-ion/LiPo charging circuit
- Battery connection pads: B+ and B-
- USB-C charging support
Recommended Arduino IDE Settings:
- Board: ESP32S3 Dev Module
- Flash Size: 4 MB
- PSRAM: QSPI PSRAM
- USB CDC On Boot: Enabled
- CPU Frequency: 240 MHz
Important:
Selecting OPI PSRAM may cause:
- PSRAM initialization errors
- Wi-Fi failures
- Wi-Fi MAC address showing 00:00:00:00:00:00
- Wi-Fi scan failures