Give your IoT project that extra kick with the new ESP32-S NodeMCU by Ai-Thinker! Based on the ESP32-S, this microcontroller integrates Bluetooth, Bluetooth Low Energy and 2.4GHz WiFi in one small and low-cost package. Microcontroller: Tensilica Xtensa Dual-Core 32-bit LX6 microprocessor, running at 160 or 240 MHz USB Chipset: CH340 Operating Voltage: 3.3V Input Voltage: 5V Digital I/O Pins (DIO): 28 Analog Input Pins (ADC): 8 Analog Output Pins (DAC): 2 UARTs: 3 SPIs: 2 I2Cs: 3 Flash Memory: 4 MB SRAM: 520 kB Clock Speed: 160 or 240 MHz WiFi: IEEE 802.11 b/g/n/e/i Dimensions: 54 x 25.5 x 12mm Weight: 8g